Merge branch 'main' into renovate/major-jetty-packages

I tried to make this work but it might need a more thorough rewrite that I just cannot do.

The worst that can happen is stopping and starting Helma apps adding redundant ServletContextHandlers to the ContextHandlerCollection until Helma is restarted.

.java-version

@@ -1 +1 @@
-11.0
+17

README.md

@@ -2,7 +2,7 @@
 
 ## TL;DR
 
-- Make sure you have Java 11 or higher installed
+- Make sure you have Java 17 or higher installed
 - Download and unpack the [latest release](https://code.host.antville.org/antville/helma/releases)
 - Invoke `./bin/helma`, resp. `./bin/helma.bat`, depending on your platform
 - Direct your web browser to <http://localhost:8080>

build.gradle

@@ -18,8 +18,8 @@ allprojects {
   apply plugin: 'java'
 
   java {
-    sourceCompatibility = JavaVersion.VERSION_11
+    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_17
   }
 
   repositories {
@@ -51,14 +51,15 @@ configurations {
 dependencies {
   implementation 'com.google.code.gson:gson:2.12.1'
   implementation 'commons-codec:commons-codec:1.18.0'
-  implementation 'commons-fileupload:commons-fileupload:1.5'
+  implementation 'org.apache.commons:commons-fileupload2-core:2.0.0-M2'
+  implementation 'org.apache.commons:commons-fileupload2-jakarta:2.0.0-M1'
   implementation 'commons-logging:commons-logging:1.3.5'
   implementation 'commons-net:commons-net:3.11.1'
   implementation 'com.sun.mail:javax.mail:1.6.2'
-  implementation 'javax.servlet:javax.servlet-api:4.0.1'
+  implementation 'jakarta.servlet:jakarta.servlet-api:5.0.0'
   implementation 'org.ccil.cowan.tagsoup:tagsoup:1.2.1'
-  implementation 'org.eclipse.jetty:jetty-servlet:9.4.57.v20241219'
+  implementation 'org.eclipse.jetty.ee9:jetty-ee9-servlet:12.0.19'
-  implementation 'org.eclipse.jetty:jetty-xml:9.4.57.v20241219'
+  implementation 'org.eclipse.jetty:jetty-xml:12.0.19'
   implementation 'org.mozilla:rhino-all:1.8.0'
   implementation 'org.sejda.imageio:webp-imageio:0.1.6'
   implementation 'xerces:xercesImpl:2.12.2'

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.12.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -114,7 +114,7 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -205,7 +205,7 @@ fi
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Collect all arguments for the java command:
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
 #     and any embedded shellness will be escaped.
 #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
 #     treated as '${Hostname}' itself on the command line.
@@ -213,7 +213,7 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
         -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
 # Stop when "xargs" is not available.

gradlew.bat

@@ -70,11 +70,11 @@ goto fail
 :execute
 @rem Setup the command line
 
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell

launcher/src/main/java/helma/main/launcher/Commandline.java

@@ -41,8 +41,8 @@ public class Commandline {
             ClassLoader loader = Main.createClassLoader(installDir);
 
             // get the main server class
-            Class<?> clazz = loader.loadClass("helma.main.CommandlineRunner");
+            Class clazz = loader.loadClass("helma.main.CommandlineRunner");
-            Class<?>[] cargs = new Class<?>[]{args.getClass()};
+            Class[] cargs = new Class[]{args.getClass()};
             Method main = clazz.getMethod("main", cargs);
             Object[] nargs = new Object[]{args};
 

launcher/src/main/java/helma/main/launcher/Main.java

@@ -35,10 +35,10 @@ import java.util.ArrayList;
  *  be able to set up class and install paths.
  */
 public class Main {
-    private Class<?> serverClass;
+    private Class serverClass;
     private Object server;
 
-    private static final Class<?>[] EMPTY_CLASS_ARRAY = new Class<?>[0];
+    private static final Class[] EMPTY_CLASS_ARRAY = new Class[0];
     private static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];
 
     /**
@@ -60,7 +60,7 @@ public class Main {
             ClassLoader loader = createClassLoader(installDir);
             // get the main server class
             serverClass = loader.loadClass("helma.main.Server");
-            Class<?>[] cargs = new Class<?>[]{args.getClass()};
+            Class[] cargs = new Class[]{args.getClass()};
             Method loadServer = serverClass.getMethod("loadServer", cargs);
             Object[] nargs = new Object[]{args};
             // and invoke the static loadServer(String[]) method
@@ -111,17 +111,17 @@ public class Main {
         }
     }
 
-    static void addJars(ArrayList<URL> jarlist, File dir) throws MalformedURLException {
+    static void addJars(ArrayList jarlist, File dir) throws MalformedURLException {
         File[] files = dir.listFiles(new FilenameFilter() {
             public boolean accept(File dir, String name) {
                 String n = name.toLowerCase();
-                return n.endsWith(".jar") || n.endsWith(".zip");
+                return n.endsWith(".jar") || n.endsWith(".zip");  //$NON-NLS-1$//$NON-NLS-2$
             }
         });
 
         if (files != null) {
             for (int i = 0; i < files.length; i++) {
-                jarlist.add(new URL("file:" + files[i].getAbsolutePath()));
+                jarlist.add(new URL("file:" + files[i].getAbsolutePath())); //$NON-NLS-1$
             }
         }
     }
@@ -143,13 +143,13 @@ public class Main {
 
         // set up the class path
         File libdir = new File(installDir, "lib");
-        ArrayList<URL> jarlist = new ArrayList<>();
+        ArrayList jarlist = new ArrayList();
 
         // add all jar files from the lib directory
         addJars(jarlist, libdir);
 
         // add all jar files from the lib/ext directory
-        addJars(jarlist, new File(libdir, "ext"));
+        addJars(jarlist, new File(libdir, "ext")); //$NON-NLS-1$
 
         URL[] urls = new URL[jarlist.size()];
 
@@ -199,7 +199,7 @@ public class Main {
         // try to get Helma installation directory
         if (installDir == null) {
             URL launcherUrl = ClassLoader.getSystemClassLoader()
-                    .getResource("helma/main/launcher/Main.class");
+                    .getResource("helma/main/launcher/Main.class"); //$NON-NLS-1$
 
             // this is a  JAR URL of the form
             //    jar:<url>!/{entry}

src/main/java/helma/extensions/HelmaExtension.java

@@ -59,7 +59,7 @@ public abstract class HelmaExtension {
      * with pairs of varname and ESObjects. This method should be <b>synchronized</b>, if it
      * performs any other self-initialization outside the scripting environment.
      */
-    public abstract HashMap<String, Object> initScripting(Application app, ScriptingEngine engine)
+    public abstract HashMap initScripting(Application app, ScriptingEngine engine)
                                    throws ConfigurationException;
 
     /**

src/main/java/helma/extensions/demo/DemoExtension.java

@@ -42,7 +42,7 @@ public class DemoExtension extends HelmaExtension {
     public void init(Server server) throws ConfigurationException {
         try {
             // just a demo with the server class itself (which is always there, obviously)
-            Class.forName("helma.main.Server");
+            Class check = Class.forName("helma.main.Server");
         } catch (ClassNotFoundException e) {
             throw new ConfigurationException("helma-library not present in classpath. make sure helma.jar is included. get it from http://www.helma.org/");
         }
@@ -87,7 +87,7 @@ public class DemoExtension extends HelmaExtension {
      *
      * @throws ConfigurationException ...
      */
-    public HashMap<String, Object> initScripting(Application app, ScriptingEngine engine)
+    public HashMap initScripting(Application app, ScriptingEngine engine)
                           throws ConfigurationException {
         if (!(engine instanceof RhinoEngine)) {
             throw new ConfigurationException("scripting engine " + engine.toString() +
@@ -98,7 +98,7 @@ public class DemoExtension extends HelmaExtension {
                      engine.toString());
 
         // initialize prototypes and global vars here
-        HashMap<String, Object> globals = new HashMap<>();
+        HashMap globals = new HashMap();
 
         globals.put("demo", Server.getServer());
 

src/main/java/helma/framework/CookieTrans.java

@@ -17,7 +17,7 @@
 package helma.framework;
 
 import java.io.Serializable;
-import javax.servlet.http.Cookie;
+import jakarta.servlet.http.Cookie;
 
 /**
  *  Cookie Transmitter. A simple, serializable representation

src/main/java/helma/framework/RequestBean.java

@@ -16,7 +16,7 @@
 
 package helma.framework;
 
-import javax.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletRequest;
 import java.io.Serializable;
 import java.util.Map;
 

src/main/java/helma/framework/RequestTrans.java

@@ -19,9 +19,9 @@ package helma.framework;
 import helma.util.SystemMap;
 import helma.util.StringUtils;
 
-import javax.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpServletResponse;
-import javax.servlet.http.Cookie;
+import jakarta.servlet.http.Cookie;
 
 import org.apache.commons.codec.binary.Base64;
 
@@ -603,11 +603,11 @@ public class RequestTrans implements Serializable {
 
         StringTokenizer tok;
 
-        if (auth.startsWith("Basic ")) {
+        if (auth.startsWith("Basic ")) { //$NON-NLS-1$
             tok = new StringTokenizer(new String(Base64.decodeBase64(auth.substring(6))),
-                                      ":");
+                                      ":"); //$NON-NLS-1$
         } else {
-            tok = new StringTokenizer(new String(Base64.decodeBase64(auth)), ":");
+            tok = new StringTokenizer(new String(Base64.decodeBase64(auth)), ":"); //$NON-NLS-1$
         }
 
         try {

src/main/java/helma/framework/ResponseBean.java

@@ -19,7 +19,7 @@ package helma.framework;
 import helma.objectmodel.db.Transactor;
 import helma.scripting.ScriptingException;
 
-import javax.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpServletResponse;
 import java.io.Serializable;
 import java.io.StringWriter;
 import java.io.PrintWriter;

src/main/java/helma/framework/ResponseTrans.java

@@ -21,7 +21,7 @@ import helma.framework.core.Application;
 import helma.util.*;
 import helma.scripting.ScriptingException;
 
-import javax.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpServletResponse;
 import java.io.*;
 import java.security.*;
 import java.util.*;
@@ -714,7 +714,7 @@ public final class ResponseTrans extends Writer implements Serializable {
                 // if (contentType != null)
                 //     digest.update (contentType.getBytes());
                 byte[] b = this.digest.digest(this.response);
-                this.etag = "\"" + new String(Base64.encodeBase64(b)) + "\"";
+                this.etag = "\"" + new String(Base64.encodeBase64(b)) + "\""; //$NON-NLS-1$ //$NON-NLS-2$
                 // only set response to 304 not modified if no cookies were set
                 if (reqtrans.hasETag(etag) && countCookies() == 0) {
                     response = new byte[0];

src/main/java/helma/framework/core/Application.java

@@ -47,7 +47,7 @@ public final class Application implements Runnable {
     private String name;
 
     // application sources
-    ArrayList<Repository> repositories;
+    ArrayList repositories;
 
     // properties and db-properties
     ResourceProperties props;
@@ -96,15 +96,15 @@ public final class Application implements Runnable {
     /**
      * Collections for evaluator thread pooling
      */
-    protected Stack<RequestEvaluator> freeThreads;
+    protected Stack freeThreads;
-    protected Vector<RequestEvaluator> allThreads;
+    protected Vector allThreads;
     boolean running = false;
     boolean debug;
     long starttime;
-    Hashtable<String, DbSource> dbSources;
+    Hashtable dbSources;
 
     // map of app modules reflected at app.modules
-    Map<String, Object> modules;
+    Map modules;
 
     // internal worker thread for scheduler, session cleanup etc.
     Thread worker;
@@ -113,10 +113,10 @@ public final class Application implements Runnable {
     ThreadGroup threadgroup;
 
     // threadlocal variable for the current RequestEvaluator
-    ThreadLocal<RequestEvaluator> currentEvaluator = new ThreadLocal<>();
+    ThreadLocal currentEvaluator = new ThreadLocal();
 
     // Map of requesttrans -> active requestevaluators
-    Hashtable<RequestTrans, RequestEvaluator> activeRequests;
+    Hashtable activeRequests;
 
     String logDir;
 
@@ -165,15 +165,15 @@ public final class Application implements Runnable {
     private long lastPropertyRead = -1L;
 
     // the set of prototype/function pairs which are allowed to be called via XML-RPC
-    private HashSet<String> xmlrpcAccess;
+    private HashSet xmlrpcAccess;
 
     // the name under which this app serves XML-RPC requests. Defaults to the app name
     private String xmlrpcHandlerName;
 
     // the list of currently active cron jobs
-    Hashtable<String, CronRunner> activeCronJobs = null;
+    Hashtable activeCronJobs = null;
     // the list of custom cron jobs
-    Hashtable<String, CronJob> customCronJobs = null;
+    Hashtable customCronJobs = null;
 
     private ResourceComparator resourceComparator;
     private Resource currentCodeResource;
@@ -230,7 +230,7 @@ public final class Application implements Runnable {
 
         this.caseInsensitive = "true".equalsIgnoreCase(server.getAppsProperties(name).getProperty("caseInsensitive"));
 
-        this.repositories = new ArrayList<>();
+        this.repositories = new ArrayList();
         this.repositories.addAll(Arrays.asList(repositories));
         resourceComparator = new ResourceComparator(this);
 
@@ -304,7 +304,7 @@ public final class Application implements Runnable {
 
         updateProperties();
 
-        dbSources = new Hashtable<>();
+        dbSources = new Hashtable();
         modules = new SystemMap();
     }
 
@@ -366,9 +366,7 @@ public final class Application implements Runnable {
 
         private void initInternal()
                 throws DatabaseException, IllegalAccessException,
-                       InstantiationException, ClassNotFoundException,
+                       InstantiationException, ClassNotFoundException {
-                       IllegalArgumentException, InvocationTargetException,
-                       NoSuchMethodException, SecurityException {
             running = true;
             // create and init type mananger
             typemgr = new TypeManager(Application.this, ignoreDirs);
@@ -383,7 +381,7 @@ public final class Application implements Runnable {
             }
 
             if (Server.getServer() != null) {
-                Vector<HelmaExtension> extensions = Server.getServer().getExtensions();
+                Vector extensions = Server.getServer().getExtensions();
 
                 for (int i = 0; i < extensions.size(); i++) {
                     HelmaExtension ext = (HelmaExtension) extensions.get(i);
@@ -398,12 +396,12 @@ public final class Application implements Runnable {
             }
 
             // create and init evaluator/thread lists
-            freeThreads = new Stack<>();
+            freeThreads = new Stack();
-            allThreads = new Vector<>();
+            allThreads = new Vector();
 
-            activeRequests = new Hashtable<>();
+            activeRequests = new Hashtable();
-            activeCronJobs = new Hashtable<>();
+            activeCronJobs = new Hashtable();
-            customCronJobs = new Hashtable<>();
+            customCronJobs = new Hashtable();
 
             // create the skin manager
             skinmgr = new SkinManager(Application.this);
@@ -444,13 +442,7 @@ public final class Application implements Runnable {
             // create and init session manager
             String sessionMgrImpl = props.getProperty("sessionManagerImpl",
                                                       "helma.framework.core.SessionManager");
-            try {
+            sessionMgr = (SessionManager) Class.forName(sessionMgrImpl).newInstance();
-                sessionMgr = (SessionManager) Class.forName(sessionMgrImpl)
-                    .getDeclaredConstructor()
-                    .newInstance();
-            } catch (NoSuchMethodException | InvocationTargetException e) {
-                throw new RuntimeException("Error initializing session manager", e);
-            }
             logEvent("Using session manager class " + sessionMgrImpl);
             sessionMgr.init(Application.this);
 
@@ -887,7 +879,7 @@ public final class Application implements Runnable {
                 } else {
                     String rootClass = classMapping.getProperty("root");
                     Class c = typemgr.getClassLoader().loadClass(rootClass);
-                    rootObject = c.getDeclaredConstructor().newInstance();
+                    rootObject = c.newInstance();
                 }
             } catch (Exception e) {
                 throw new RuntimeException("Error creating root object: " +

src/main/java/helma/framework/core/RequestEvaluator.java

@@ -100,7 +100,7 @@ public final class RequestEvaluator implements Runnable {
                 app.setCurrentRequestEvaluator(this);
                 Class clazz = app.getClassLoader().loadClass(engineClassName);
 
-                scriptingEngine = (ScriptingEngine) clazz.getDeclaredConstructor().newInstance();
+                scriptingEngine = (ScriptingEngine) clazz.newInstance();
                 scriptingEngine.init(app, this);
             } catch (Exception x) {
                 Throwable t = x;

src/main/java/helma/image/ImageGenerator.java

@@ -72,7 +72,7 @@ public abstract class ImageGenerator {
                     "The imageGenerator class cannot be found: " + className);
             }
             try {
-                generator = (ImageGenerator) generatorClass.getDeclaredConstructor().newInstance();
+                generator = (ImageGenerator)generatorClass.newInstance();
             } catch (Exception e) {
                 throw new RuntimeException(
                     "The ImageGenerator instance could not be created: "

src/main/java/helma/image/ImageInfo.java

@@ -30,7 +30,6 @@ import java.util.Vector;
  * (or input streams).
  * <p>
  * Use the class like this:
- *
  * <pre>
  * ImageInfo ii = new ImageInfo();
  * ii.setInput(in); // in can be InputStream or RandomAccessFile
@@ -46,16 +45,12 @@ import java.util.Vector;
  *   " image(s), " + ii.getNumberOfComments() + " comment(s).");
  *  // there are other properties, check out the API documentation
  * </pre>
- *
  * You can also use this class as a command line program.
  * Call it with a number of image file names and URLs as parameters:
- *
  * <pre>
  *   java ImageInfo *.jpg *.png *.gif http://somesite.tld/image.jpg
  * </pre>
- *
  * or call it without parameters and pipe data to it:
- *
  * <pre>
  *   java ImageInfo &lt; image.jpg  
  * </pre>
@@ -69,8 +64,7 @@ import java.util.Vector;
  *  setDetermineImageNumber(true) before calling check().
  *  The complete scan over the GIF file will take additional time.</li>
  * <li>Transparency information is not included in the bits per pixel count.
- * Actually, it was my decision not to include those bits, so it's a feature!
+ *  Actually, it was my decision not to include those bits, so it's a feature! ;-)</li>
- * ;-)</li>
  * </ul>
  * <p>
  * Requirements:
@@ -78,12 +72,9 @@ import java.util.Vector;
  * <li>Java 1.1 or higher</li>
  * </ul>
  * <p>
- * The latest version can be found at <a href=
+ * The latest version can be found at <a href="http://www.geocities.com/marcoschmidt.geo/image-info.html">http://www.geocities.com/marcoschmidt.geo/image-info.html</a>.
- * "http://www.geocities.com/marcoschmidt.geo/image-info.html">http://www.geocities.com/marcoschmidt.geo/image-info.html</a>.
  * <p>
- * Written by
+ * Written by <a href="http://www.geocities.com/marcoschmidt.geo/contact.html">Marco Schmidt</a>.
- * <a href="http://www.geocities.com/marcoschmidt.geo/contact.html">Marco
- * Schmidt</a>.
  * <p>
  * This class is contributed to the Public Domain.
  * Use it at your own risk.
@@ -93,53 +84,35 @@ import java.util.Vector;
  * History:
  * <ul>
  * <li><strong>2001-08-24</strong> Initial version.</li>
- * <li><strong>2001-10-13</strong> Added support for the file formats BMP and
+ * <li><strong>2001-10-13</strong> Added support for the file formats BMP and PCX.</li>
- * PCX.</li>
+ * <li><strong>2001-10-16</strong> Fixed bug in read(int[], int, int) that returned
- * <li><strong>2001-10-16</strong> Fixed bug in read(int[], int, int) that
+ * <li><strong>2002-01-22</strong> Added support for file formats Amiga IFF and Sun Raster (RAS).</li>
- * returned
+ * <li><strong>2002-01-24</strong> Added support for file formats Portable Bitmap / Graymap / Pixmap (PBM, PGM, PPM) and Adobe Photoshop (PSD).
- * <li><strong>2002-01-22</strong> Added support for file formats Amiga IFF and
+ *   Added new method getMimeType() to return the MIME type associated with a particular file format.</li>
- * Sun Raster (RAS).</li>
+ * <li><strong>2002-03-15</strong> Added support to recognize number of images in file. Only works with GIF.
- * <li><strong>2002-01-24</strong> Added support for file formats Portable
+ *   Use {@link #setDetermineImageNumber} with <code>true</code> as argument to identify animated GIFs
- * Bitmap / Graymap / Pixmap (PBM, PGM, PPM) and Adobe Photoshop (PSD).
+ *   ({@link #getNumberOfImages()} will return a value larger than <code>1</code>).</li>
- * Added new method getMimeType() to return the MIME type associated with a
+ * <li><strong>2002-04-10</strong> Fixed a bug in the feature 'determine number of images in animated GIF' introduced with version 1.1.
- * particular file format.</li>
- * <li><strong>2002-03-15</strong> Added support to recognize number of images
- * in file. Only works with GIF.
- * Use {@link #setDetermineImageNumber} with <code>true</code> as argument to
- * identify animated GIFs
- * ({@link #getNumberOfImages()} will return a value larger than
- * <code>1</code>).</li>
- * <li><strong>2002-04-10</strong> Fixed a bug in the feature 'determine number
- * of images in animated GIF' introduced with version 1.1.
  *   Thanks to Marcelo P. Lima for sending in the bug report. 
  *   Released as 1.1.1.</li>
  * <li><strong>2002-04-18</strong> Added {@link #setCollectComments(boolean)}. 
  *  That new method lets the user specify whether textual comments are to be  
  *  stored in an internal list when encountered in an input image file / stream.
- * Added two methods to return the physical width and height of the image in
+ *  Added two methods to return the physical width and height of the image in dpi: 
- * dpi:
  *   {@link #getPhysicalWidthDpi()} and {@link #getPhysicalHeightDpi()}.
- * If the physical resolution could not be retrieved, these methods return
+ *  If the physical resolution could not be retrieved, these methods return <code>-1</code>.
- * <code>-1</code>.
  *  </li>
- * <li><strong>2002-04-23</strong> Added support for the new properties physical
+ * <li><strong>2002-04-23</strong> Added support for the new properties physical resolution and
- * resolution and
  *   comments for some formats. Released as 1.2.</li>
- * <li><strong>2002-06-17</strong> Added support for SWF, sent in by Michael
+ * <li><strong>2002-06-17</strong> Added support for SWF, sent in by Michael Aird.
- * Aird.
+ *  Changed checkJpeg() so that other APP markers than APP0 will not lead to a failure anymore.
- * Changed checkJpeg() so that other APP markers than APP0 will not lead to a
- * failure anymore.
  *  Released as 1.3.</li>
- * <li><strong>2003-07-28</strong> Bug fix - skip method now takes return values
+ * <li><strong>2003-07-28</strong> Bug fix - skip method now takes return values into consideration.
- * into consideration.
+ *  Less bytes than necessary may have been skipped, leading to flaws in the retrieved information in some cases.
- * Less bytes than necessary may have been skipped, leading to flaws in the
- * retrieved information in some cases.
  *  Thanks to Bernard Bernstein for pointing that out.
  *  Released as 1.4.</li>
- * <li><strong>2004-02-29</strong> Added support for recognizing progressive
+ * <li><strong>2004-02-29</strong> Added support for recognizing progressive JPEG and
- * JPEG and
+ *  interlaced PNG and GIF. A new method {@link #isProgressive()} returns whether ImageInfo
- * interlaced PNG and GIF. A new method {@link #isProgressive()} returns whether
- * ImageInfo
  *  has found that the storage type is progressive (or interlaced). 
  *  Thanks to Joe Germuska for suggesting the feature.
  *  Bug fix: BMP physical resolution is now correctly determined.
@@ -163,10 +136,8 @@ public class ImageInfo {
 	 * of images (GIFs with more than one image are animations).
 	 * If you know of a place where GIFs store the physical resolution
 	 * of an image, please
-	 * <a href="http://www.geocities.com/marcoschmidt.geo/contact.html">send me a
+	 * <a href="http://www.geocities.com/marcoschmidt.geo/contact.html">send me a mail</a>!
-	 * mail</a>!
+	 * It is determined whether the GIF stream is interlaced (see {@link #isProgressive()}).
-	 * It is determined whether the GIF stream is interlaced (see
-	 * {@link #isProgressive()}).
 	 */
 	public static final int FORMAT_GIF = 1;
 
@@ -175,8 +146,7 @@ public class ImageInfo {
 	 * PNG only supports one image per file.
 	 * Both physical resolution and comments can be stored with PNG,
 	 * but ImageInfo is currently not able to extract those.
-	 * It is determined whether the PNG stream is interlaced (see
+	 * It is determined whether the PNG stream is interlaced (see {@link #isProgressive()}).
-	 * {@link #isProgressive()}).
 	 */
 	public static final int FORMAT_PNG = 2;
 
@@ -225,7 +195,7 @@ public class ImageInfo {
 	public static final int COLOR_TYPE_UNKNOWN = -1;
 	public static final int COLOR_TYPE_TRUECOLOR_RGB = 0;
 	public static final int COLOR_TYPE_PALETTED = 1;
-	public static final int COLOR_TYPE_GRAYSCALE = 2;
+	public static final int COLOR_TYPE_GRAYSCALE= 2;
 	public static final int COLOR_TYPE_BLACK_AND_WHITE = 3;
 
 	/**
@@ -233,30 +203,32 @@ public class ImageInfo {
 	 * The FORMAT_xyz int constants can be used as index values for
 	 * this array.
 	 */
-	private static final String[] FORMAT_NAMES = { "JPEG", "GIF", "PNG", "BMP", "PCX",
+	private static final String[] FORMAT_NAMES =
+		{"JPEG", "GIF", "PNG", "BMP", "PCX", 
 		 "IFF", "RAS", "PBM", "PGM", "PPM", 
-			"PSD", "SWF" };
+		 "PSD", "SWF"};
 
 	/**
 	 * The names of the MIME types for all supported file formats.
 	 * The FORMAT_xyz int constants can be used as index values for
 	 * this array.
 	 */
-	private static final String[] MIME_TYPE_STRINGS = { "image/jpeg", "image/gif", "image/png", "image/bmp",
+	private static final String[] MIME_TYPE_STRINGS =
-			"image/pcx",
+		{"image/jpeg", "image/gif", "image/png", "image/bmp", "image/pcx", 
 		 "image/iff", "image/ras", "image/x-portable-bitmap", "image/x-portable-graymap", "image/x-portable-pixmap", 
-			"image/psd", "application/x-shockwave-flash" };
+		 "image/psd", "application/x-shockwave-flash"};
 
 	private int width;
 	private int height;
 	private int bitsPerPixel;
     private int numColors;
+	private int colorType = COLOR_TYPE_UNKNOWN;
 	private boolean progressive;
 	private int format;
 	private InputStream in;
 	private DataInput din;
 	private boolean collectComments = true;
-	private Vector<String> comments;
+	private Vector comments;
 	private boolean determineNumberOfImages;
 	private int numberOfImages;
 	private int physicalHeightDpi;
@@ -266,7 +238,7 @@ public class ImageInfo {
 
 	private void addComment(String s) {
 		if (comments == null) {
-			comments = new Vector<String>();
+			comments = new Vector();
 		}
 		comments.addElement(s);
 	}
@@ -276,7 +248,6 @@ public class ImageInfo {
 	 * using {@link #setInput(InputStream)} or {@link #setInput(DataInput)}.
 	 * If true is returned, the file format was known and information
 	 * on the file's content can be retrieved using the various getXyz methods.
-	 *
 	 * @return if information could be retrieved from input
 	 */
 	public boolean check() {
@@ -294,25 +265,44 @@ public class ImageInfo {
 			int b2 = read() & 0xff;
 			if (b1 == 0x47 && b2 == 0x49) {
 				return checkGif();
-			} else if (b1 == 0x89 && b2 == 0x50) {
+			}
+			else
+			if (b1 == 0x89 && b2 == 0x50) {
 				return checkPng();
-			} else if (b1 == 0xff && b2 == 0xd8) {
+			}
+			else
+			if (b1 == 0xff && b2 == 0xd8) {
 				return checkJpeg();
-			} else if (b1 == 0x42 && b2 == 0x4d) {
+			}
+			else
+			if (b1 == 0x42 && b2 == 0x4d) {
 				return checkBmp();
-			} else if (b1 == 0x0a && b2 < 0x06) {
+			}
+			else
+			if (b1 == 0x0a && b2 < 0x06) {
 				return checkPcx();
-			} else if (b1 == 0x46 && b2 == 0x4f) {
+			}
+			else
+			if (b1 == 0x46 && b2 == 0x4f) {
 				return checkIff();
-			} else if (b1 == 0x59 && b2 == 0xa6) {
+			}
+			else
+			if (b1 == 0x59 && b2 == 0xa6) {
 				return checkRas();
-			} else if (b1 == 0x50 && b2 >= 0x31 && b2 <= 0x36) {
+			}
+			else
+			if (b1 == 0x50 && b2 >= 0x31 && b2 <= 0x36) {
 				return checkPnm(b2 - '0');
-			} else if (b1 == 0x38 && b2 == 0x42) {
+			}
+			else
+			if (b1 == 0x38 && b2 == 0x42) {
 				return checkPsd();
-			} else if (b1 == 0x46 && b2 == 0x57) {
+			}
+			else
+			if (b1 == 0x46 && b2 == 0x57) {
 				return checkSwf();
-			} else {
+			}
+			else {
 				return false;
 			}
 		} catch (IOException ioe) {
@@ -336,11 +326,11 @@ public class ImageInfo {
 		    bitsPerPixel != 24 && bitsPerPixel != 32) {
 		    return false;
 		}
-		int x = (int) (getIntLittleEndian(a, 36) * 0.0254);
+		int x = (int)(getIntLittleEndian(a, 36) * 0.0254);
 		if (x > 0) {
 			setPhysicalWidthDpi(x);
 		}
-		int y = (int) (getIntLittleEndian(a, 40) * 0.0254);
+		int y = (int)(getIntLittleEndian(a, 40) * 0.0254);
 		if (y > 0) {
 			setPhysicalHeightDpi(y);
 		}
@@ -349,8 +339,8 @@ public class ImageInfo {
 	}
 
 	private boolean checkGif() throws IOException {
-		final byte[] GIF_MAGIC_87A = { 0x46, 0x38, 0x37, 0x61 };
+		final byte[] GIF_MAGIC_87A = {0x46, 0x38, 0x37, 0x61};
-		final byte[] GIF_MAGIC_89A = { 0x46, 0x38, 0x39, 0x61 };
+		final byte[] GIF_MAGIC_89A = {0x46, 0x38, 0x39, 0x61};
 		byte[] a = new byte[11]; // 4 from the GIF signature + 7 from the global header
 		if (read(a) != 11) {
 			return false;
@@ -375,10 +365,12 @@ public class ImageInfo {
         }
 		numberOfImages = 0;
 		int blockType;
-		do {
+		do
+		{
 			blockType = read();
-			switch (blockType) {
+			switch(blockType)
-				case (0x2c): // image separator
+			{
+				case(0x2c): // image separator
 				{
 					if (read(a, 0, 9) != 9) {
 						return false;
@@ -397,24 +389,29 @@ public class ImageInfo {
 					}
 					skip(1); // initial code length
 					int n;
-					do {
+					do
+					{
 						n = read();
 						if (n > 0) {
 							skip(n);
-						} else if (n == -1) {
+						}
+						else
+						if (n == -1) {
 							return false;
 						}
-					} while (n > 0);
+					}
+					while (n > 0);
 					numberOfImages++;
 					break;
 				}
-				case (0x21): // extension
+				case(0x21): // extension
 				{
 					int extensionType = read();
 					if (collectComments && extensionType == 0xfe) {
 						StringBuffer sb = new StringBuffer();
 						int n;
-						do {
+						do
+						{
 							n = read();
 							if (n == -1) {
 								return false;
@@ -425,32 +422,39 @@ public class ImageInfo {
 									if (ch == -1) {
 										return false;
 									}
-									sb.append((char) ch);
+									sb.append((char)ch);
 								}
 							}
-						} while (n > 0);
+						}
+						while (n > 0);
 					} else {
 						int n;
-						do {
+						do
+						{
 							n = read();
 							if (n > 0) {
 								skip(n);
-							} else if (n == -1) {
+							}
+							else
+							if (n == -1) {
 								return false;
 							}
-						} while (n > 0);
+						}
+						while (n > 0);
 					}
 					break;
 				}
-				case (0x3b): // end of file
+				case(0x3b): // end of file
 				{
 					break;
 				}
-				default: {
+				default:
+				{
 					return false;
 				}
 			}
-		} while (blockType != 0x3b);
+		}
+		while (blockType != 0x3b);
 		return true;
 	}
 
@@ -461,7 +465,7 @@ public class ImageInfo {
 		if (read(a, 0, 10) != 10) {
 			return false;
 		}
-		final byte[] IFF_RM = { 0x52, 0x4d };
+		final byte[] IFF_RM = {0x52, 0x4d};
 		if (!equals(a, 0, IFF_RM, 0, 2)) {
 			return false;
 		}
@@ -513,21 +517,25 @@ public class ImageInfo {
 				if (read(data, 0, 12) != 12) {
 					return false;
 				}
-				final byte[] APP0_ID = { 0x4a, 0x46, 0x49, 0x46, 0x00 };
+				final byte[] APP0_ID = {0x4a, 0x46, 0x49, 0x46, 0x00};
 				if (equals(APP0_ID, 0, data, 0, 5)) {
-					// System.out.println("data 7=" + data[7]);
+					//System.out.println("data 7=" + data[7]);
 					if (data[7] == 1) {
 						setPhysicalWidthDpi(getShortBigEndian(data, 8));
 						setPhysicalHeightDpi(getShortBigEndian(data, 10));
-					} else if (data[7] == 2) {
+					}
+					else
+					if (data[7] == 2) {
 						int x = getShortBigEndian(data, 8);
 						int y = getShortBigEndian(data, 10);
-						setPhysicalWidthDpi((int) (x * 2.54f));
+						setPhysicalWidthDpi((int)(x * 2.54f));
-						setPhysicalHeightDpi((int) (y * 2.54f));
+						setPhysicalHeightDpi((int)(y * 2.54f));
 					}
 				}
 				skip(size - 14);
-			} else if (collectComments && size > 2 && marker == 0xfffe) { // comment
+			}
+			else
+			if (collectComments && size > 2 && marker == 0xfffe) { // comment
 				size -= 2;
 				byte[] chars = new byte[size];
 				if (read(chars, 0, size) != size) {
@@ -536,7 +544,9 @@ public class ImageInfo {
 				String comment = new String(chars, "iso-8859-1");
 				comment = comment.trim();
 				addComment(comment);
-			} else if (marker >= 0xffc0 && marker <= 0xffcf && marker != 0xffc4 && marker != 0xffc8) {
+			}
+			else
+			if (marker >= 0xffc0 && marker <= 0xffcf && marker != 0xffc4 && marker != 0xffc8) {
 				if (read(data, 0, 6) != 6) {
 					return false;
 				}
@@ -578,7 +588,8 @@ public class ImageInfo {
 		    (bits == 1 || bits == 2 || bits == 4 || bits == 8)) {
 			// paletted
 			bitsPerPixel = bits;
-		} else if (planes == 3 && bits == 8) {
+		} else
+		if (planes == 3 && bits == 8) {
 			// RGB truecolor
 			bitsPerPixel = 24;
 		} else {
@@ -591,7 +602,7 @@ public class ImageInfo {
 	}
 
 	private boolean checkPng() throws IOException {
-		final byte[] PNG_MAGIC = { 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a };
+		final byte[] PNG_MAGIC = {0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a};
 		byte[] a = new byte[27];
 		if (read(a) != 27) {
 			return false;
@@ -615,11 +626,12 @@ public class ImageInfo {
 		if (id < 1 || id > 6) {
 			return false;
 		}
-		final int[] PNM_FORMATS = { FORMAT_PBM, FORMAT_PGM, FORMAT_PPM };
+		final int[] PNM_FORMATS = {FORMAT_PBM, FORMAT_PGM, FORMAT_PPM};
 		format = PNM_FORMATS[(id - 1) % 3];
 		boolean hasPixelResolution = false;
 		String s;
-		while (true) {
+		while (true)
+		{
 			s = readLine();
 			if (s != null) {
 				s = s.trim();
@@ -658,7 +670,9 @@ public class ImageInfo {
 					return true;
 				}
 				hasPixelResolution = true;
-			} else {
+			}
+			else
+			{
 				int maxSample;
 				try {
 					maxSample = Integer.parseInt(s);
@@ -687,7 +701,7 @@ public class ImageInfo {
 		if (read(a) != a.length) {
 			return false;
 		}
-		final byte[] PSD_MAGIC = { 0x50, 0x53 };
+		final byte[] PSD_MAGIC = {0x50, 0x53};
 		if (!equals(a, 0, PSD_MAGIC, 0, 2)) {
 			return false;
 		}
@@ -705,7 +719,7 @@ public class ImageInfo {
 		if (read(a) != a.length) {
 			return false;
 		}
-		final byte[] RAS_MAGIC = { 0x6a, (byte) 0x95 };
+		final byte[] RAS_MAGIC = {0x6a, (byte)0x95};
 		if (!equals(a, 0, RAS_MAGIC, 0, 2)) {
 			return false;
 		}
@@ -718,18 +732,19 @@ public class ImageInfo {
 
 	// Written by Michael Aird.
 	private boolean checkSwf() throws IOException {
-		// get rid of the last byte of the signature, the byte of the version and 4
+		//get rid of the last byte of the signature, the byte of the version and 4 bytes of the size
-		// bytes of the size
 		byte[] a = new byte[6];
 		if (read(a) != a.length) {
 			return false;
 		}
 		format = FORMAT_SWF;
-		int bitSize = (int) readUBits(5);
+		int bitSize = (int)readUBits( 5 );
-		int maxX = (int) readSBits(bitSize);
+		int minX = (int)readSBits( bitSize );
-		int maxY = (int) readSBits(bitSize);
+		int maxX = (int)readSBits( bitSize );
-		width = maxX / 20; // cause we're in twips
+		int minY = (int)readSBits( bitSize );
-		height = maxY / 20; // cause we're in twips
+		int maxY = (int)readSBits( bitSize );
+		width = maxX/20; //cause we're in twips
+		height = maxY/20;  //cause we're in twips
 		setPhysicalWidthDpi(72);
 		setPhysicalHeightDpi(72);
 		return (width > 0 && height > 0);
@@ -760,10 +775,8 @@ public class ImageInfo {
 	}
 
 	/** 
-	 * If {@link #check()} was successful, returns the image's number of bits per
+	 * If {@link #check()} was successful, returns the image's number of bits per pixel.
-	 * pixel.
 	 * Does not include transparency information like the alpha channel.
-	 *
 	 * @return number of bits per image pixel
 	 */
 	public int getBitsPerPixel() {
@@ -779,9 +792,7 @@ public class ImageInfo {
 
     /**
 	 * Returns the index'th comment retrieved from the image.
-	 *
+	 * @throws IllegalArgumentException if index is smaller than 0 or larger than or equal
-	 * @throws IllegalArgumentException if index is smaller than 0 or larger than or
-	 *                                  equal
 	 * to the number of comments retrieved
 	 * @see #getNumberOfComments
 	 */
@@ -789,14 +800,13 @@ public class ImageInfo {
 		if (comments == null || index < 0 || index >= comments.size()) {
 			throw new IllegalArgumentException("Not a valid comment index: " + index);
 		}
-		return (String) comments.elementAt(index);
+		return (String)comments.elementAt(index);
 	}
 
 	/**
 	 * If {@link #check()} was successful, returns the image format as one
 	 * of the FORMAT_xyz constants from this class.
 	 * Use {@link #getFormatName()} to get a textual description of the file format.
-	 *
 	 * @return file format as a FORMAT_xyz constant
 	 */
 	public int getFormat() {
@@ -806,7 +816,6 @@ public class ImageInfo {
 	/**
 	 * If {@link #check()} was successful, returns the image format's name.
 	 * Use {@link #getFormat()} to get a unique number.
-	 *
 	 * @return file format name
 	 */
 	public String getFormatName() {
@@ -820,7 +829,6 @@ public class ImageInfo {
 	/** 
 	 * If {@link #check()} was successful, returns one the image's vertical
 	 * resolution in pixels.
-	 *
 	 * @return image height in pixels
 	 */
 	public int getHeight() {
@@ -828,14 +836,16 @@ public class ImageInfo {
 	}
 
 	private int getIntBigEndian(byte[] a, int offs) {
-		return (a[offs] & 0xff) << 24 |
+		return
+			(a[offs] & 0xff) << 24 | 
 			(a[offs + 1] & 0xff) << 16 | 
 			(a[offs + 2] & 0xff) << 8 | 
 			a[offs + 3] & 0xff;
 	}
 
 	private int getIntLittleEndian(byte[] a, int offs) {
-		return (a[offs + 3] & 0xff) << 24 |
+		return
+			(a[offs + 3] & 0xff) << 24 | 
 			(a[offs + 2] & 0xff) << 16 | 
 			(a[offs + 1] & 0xff) << 8 | 
 			a[offs] & 0xff;
@@ -844,12 +854,12 @@ public class ImageInfo {
 	/** 
 	 * If {@link #check()} was successful, returns a String with the
 	 * MIME type of the format.
-	 *
 	 * @return MIME type, e.g. <code>image/jpeg</code>
 	 */
 	public String getMimeType() {
 		if (format >= 0 && format < MIME_TYPE_STRINGS.length) {
-			if (format == FORMAT_JPEG && progressive) {
+			if (format == FORMAT_JPEG && progressive)
+			{
 				return "image/pjpeg";
 			}
 			return MIME_TYPE_STRINGS[format];
@@ -859,16 +869,15 @@ public class ImageInfo {
 	}
 
 	/**
-	 * If {@link #check()} was successful and {@link #setCollectComments(boolean)}
+	 * If {@link #check()} was successful and {@link #setCollectComments(boolean)} was called with
-	 * was called with
 	 * <code>true</code> as argument, returns the number of comments retrieved 
 	 * from the input image stream / file.
 	 * Any number &gt;= 0 and smaller than this number of comments is then a
 	 * valid argument for the {@link #getComment(int)} method.
-	 *
 	 * @return number of comments retrieved from input image
 	 */
-	public int getNumberOfComments() {
+	public int getNumberOfComments()
+	{
 		if (comments == null) {
 			return 0;
 		} else {
@@ -880,12 +889,11 @@ public class ImageInfo {
 	 * Returns the number of images in the examined file.
 	 * Assumes that <code>setDetermineImageNumber(true);</code> was called before
 	 * a successful call to {@link #check()}.
-	 * This value can currently be only different from <code>1</code> for GIF
+	 * This value can currently be only different from <code>1</code> for GIF images.
-	 * images.
-	 *
 	 * @return number of images in file
 	 */
-	public int getNumberOfImages() {
+	public int getNumberOfImages()
+	{
 		return numberOfImages;
 	}
 
@@ -893,7 +901,6 @@ public class ImageInfo {
 	 * Returns the physical height of this image in dots per inch (dpi).
 	 * Assumes that {@link #check()} was successful.
 	 * Returns <code>-1</code> on failure.
-	 *
 	 * @return physical height (in dpi)
 	 * @see #getPhysicalWidthDpi()
 	 * @see #getPhysicalHeightInch()
@@ -903,10 +910,8 @@ public class ImageInfo {
 	}
 
 	/**
-	 * If {@link #check()} was successful, returns the physical width of this image
+	 * If {@link #check()} was successful, returns the physical width of this image in dpi (dots per inch)
-	 * in dpi (dots per inch)
 	 * or -1 if no value could be found.
-	 *
 	 * @return physical height (in dpi)
 	 * @see #getPhysicalHeightDpi()
 	 * @see #getPhysicalWidthDpi()
@@ -916,17 +921,15 @@ public class ImageInfo {
 		int h = getHeight();
 		int ph = getPhysicalHeightDpi();
 		if (h > 0 && ph > 0) {
-			return ((float) h) / ((float) ph);
+			return ((float)h) / ((float)ph);
 		} else {
 			return -1.0f;
 		}
 	}
 
 	/**
-	 * If {@link #check()} was successful, returns the physical width of this image
+	 * If {@link #check()} was successful, returns the physical width of this image in dpi (dots per inch)
-	 * in dpi (dots per inch)
 	 * or -1 if no value could be found.
-	 *
 	 * @return physical width (in dpi)
 	 * @see #getPhysicalHeightDpi()
 	 * @see #getPhysicalWidthInch()
@@ -940,7 +943,6 @@ public class ImageInfo {
 	 * Returns the physical width of an image in inches, or
 	 * <code>-1.0f</code> if width information is not available.
 	 * Assumes that {@link #check} has been called successfully.
-	 *
 	 * @return physical width in inches or <code>-1.0f</code> on failure
 	 * @see #getPhysicalWidthDpi
 	 * @see #getPhysicalHeightInch
@@ -949,14 +951,15 @@ public class ImageInfo {
 		int w = getWidth();
 		int pw = getPhysicalWidthDpi();
 		if (w > 0 && pw > 0) {
-			return ((float) w) / ((float) pw);
+			return ((float)w) / ((float)pw);
 		} else {
 			return -1.0f;
 		}
 	}
 
 	private int getShortBigEndian(byte[] a, int offs) {
-		return (a[offs] & 0xff) << 8 |
+		return
+			(a[offs] & 0xff) << 8 | 
 			(a[offs + 1] & 0xff);
 	}
 
@@ -967,7 +970,6 @@ public class ImageInfo {
 	/** 
 	 * If {@link #check()} was successful, returns one the image's horizontal
 	 * resolution in pixels.
-	 *
 	 * @return image width in pixels
 	 */
 	public int getWidth() {
@@ -975,12 +977,11 @@ public class ImageInfo {
 	}
 
 	/**
-	 * Returns whether the image is stored in a progressive (also called:
+	 * Returns whether the image is stored in a progressive (also called: interlaced) way.
-	 * interlaced) way.
-	 *
 	 * @return true for progressive/interlaced, false otherwise
 	 */
-	public boolean isProgressive() {
+	public boolean isProgressive()
+	{
 		return progressive;
 	}
 
@@ -990,7 +991,6 @@ public class ImageInfo {
 	 * printed to standard output, one line per file) or call
 	 * it with no parameters. It will then check data given to it
 	 * via standard input.
-	 *
 	 * @param args the program arguments which must be file names
 	 */
 	public static void main(String[] args) {
@@ -1044,7 +1044,8 @@ public class ImageInfo {
 			imageInfo.getPhysicalHeightDpi() + ";" +
 			imageInfo.getPhysicalWidthInch() + ";" +
 			imageInfo.getPhysicalHeightInch() + ";" +
-						imageInfo.isProgressive());
+			imageInfo.isProgressive()
+		);
 	}
 
 	private static void printLine(int indentLevels, String text, float value, float minValidValue) {
@@ -1132,19 +1133,20 @@ public class ImageInfo {
 			int value = read();
 			finished = (value == -1 || value == 10);
 			if (!finished) {
-				sb.append((char) value);
+				sb.append((char)value);
 			}
 		} while (!finished);
 		return sb.toString();
 	}
 
-	private long readUBits(int numBits) throws IOException {
+	private long readUBits( int numBits ) throws IOException
+	{
 		if (numBits == 0) {
 			return 0;
 		}
 		int bitsLeft = numBits;
 		long result = 0;
-		if (bitPos == 0) { // no value in the buffer - read a byte
+		if (bitPos == 0) { //no value in the buffer - read a byte
 			if (in != null) {
 				bitBuf = in.read();
 			} else {
@@ -1153,9 +1155,11 @@ public class ImageInfo {
 			bitPos = 8;
 		}
         
-		while (true) {
+	    while( true )
+        {
             int shift = bitsLeft - bitPos;
-			if (shift > 0) {
+            if( shift > 0 )
+            {
                 // Consume the entire buffer
                 result |= bitBuf << shift;
                 bitsLeft -= bitPos;
@@ -1167,7 +1171,9 @@ public class ImageInfo {
                   bitBuf = din.readByte();
                 }
                 bitPos = 8;
-			} else {
+            }
+            else
+            {
              	// Consume a portion of the buffer
                 result |= bitBuf >> -shift;
                 bitPos -= bitsLeft;
@@ -1181,17 +1187,31 @@ public class ImageInfo {
         /**
      * Read a signed value from the given number of bits
      */
-	private int readSBits(int numBits) throws IOException {
+    private int readSBits( int numBits ) throws IOException
+    {
         // Get the number as an unsigned value.
-		long uBits = readUBits(numBits);
+        long uBits = readUBits( numBits );
 
         // Is the number negative?
-		if ((uBits & (1L << (numBits - 1))) != 0) {
+        if( ( uBits & (1L << (numBits - 1))) != 0 )
+        {
             // Yes. Extend the sign.
             uBits |= -1L << numBits;
         }
 
-		return (int) uBits;
+        return (int)uBits;        
+    }  
+   
+	private void synchBits()
+	{
+		bitBuf = 0;
+		bitPos = 0;
+	}
+
+	private String readLine(int firstChar) throws IOException {
+		StringBuffer result = new StringBuffer();
+		result.append((char)firstChar);
+		return readLine(result);
 	}
 
 	private static void run(String sourceName, InputStream in, ImageInfo imageInfo, boolean verbose) {
@@ -1207,12 +1227,12 @@ public class ImageInfo {
 	 * Specify whether textual comments are supposed to be extracted from input.
 	 * Default is <code>false</code>.
 	 * If enabled, comments will be added to an internal list.
-	 *
 	 * @param newValue if <code>true</code>, this class will read comments
 	 * @see #getNumberOfComments
 	 * @see #getComment
 	 */
-	public void setCollectComments(boolean newValue) {
+	public void setCollectComments(boolean newValue)
+	{
 		collectComments = newValue;
 	}
 
@@ -1227,11 +1247,11 @@ public class ImageInfo {
 	 * the actual number of images can be queried via 
 	 * {@link #getNumberOfImages()} after a successful call to
 	 * {@link #check()}.
-	 *
 	 * @param newValue will the number of images be determined?
 	 * @see #getNumberOfImages
 	 */
-	public void setDetermineImageNumber(boolean newValue) {
+	public void setDetermineImageNumber(boolean newValue)
+	{
 		determineNumberOfImages = newValue;
 	}
 
@@ -1239,7 +1259,6 @@ public class ImageInfo {
 	 * Set the input stream to the argument stream (or file). 
 	 * Note that {@link java.io.RandomAccessFile} implements
 	 * {@link java.io.DataInput}.
-	 *
 	 * @param dataInput the input stream to read from
 	 */
 	public void setInput(DataInput dataInput) {
@@ -1249,7 +1268,6 @@ public class ImageInfo {
 
 	/**
 	 * Set the input stream to the argument stream (or file).
-	 *
 	 * @param inputStream the input stream to read from
 	 */
 	public void setInput(InputStream inputStream) {

src/main/java/helma/image/imageio/gif/GIFImageWriterSpi.java

@@ -24,7 +24,6 @@ import java.io.*;
 import java.util.*;
 import javax.imageio.*;
 import javax.imageio.spi.*;
-import javax.imageio.stream.ImageOutputStream;
 
 public class GIFImageWriterSpi extends ImageWriterSpi {
 	
@@ -36,7 +35,7 @@ public class GIFImageWriterSpi extends ImageWriterSpi {
             new String[] {"gif", "GIF"},
             new String[] {"image/gif", "image/x-gif"},
             "helma.image.imageio.gif.GIFImageWriter",
-            new Class<?>[] {ImageOutputStream.class},
+            STANDARD_OUTPUT_TYPE,
             null,
             false, null, null, null, null,
             false, null, null, null, null

src/main/java/helma/main/ApplicationManager.java

@@ -19,11 +19,13 @@ import java.util.Vector;
 
 import org.apache.commons.logging.Log;
 import org.apache.xmlrpc.XmlRpcHandler;
+
 import org.eclipse.jetty.server.handler.ContextHandler;
 import org.eclipse.jetty.server.handler.ContextHandlerCollection;
 import org.eclipse.jetty.server.handler.ResourceHandler;
-import org.eclipse.jetty.servlet.ServletContextHandler;
+import org.eclipse.jetty.ee9.servlet.ServletContextHandler;
-import org.eclipse.jetty.servlet.ServletHolder;
+import org.eclipse.jetty.ee9.servlet.ServletHolder;
+import org.eclipse.jetty.util.resource.ResourceFactory;
 
 import helma.framework.core.Application;
 import helma.framework.repository.FileRepository;
@@ -36,9 +38,9 @@ import helma.util.StringUtils;
  * This class is responsible for starting and stopping Helma applications.
  */
 public class ApplicationManager implements XmlRpcHandler {
-    private Hashtable<String, AppDescriptor> descriptors;
+    private Hashtable descriptors;
-    private Hashtable<String, Application> applications;
+    private Hashtable applications;
-    private Hashtable<String, Application> xmlrpcHandlers;
+    private Hashtable xmlrpcHandlers;
     private ResourceProperties props;
     private Server server;
     private long lastModified;
@@ -54,9 +56,9 @@ public class ApplicationManager implements XmlRpcHandler {
     public ApplicationManager(ResourceProperties props, Server server) {
         this.props = props;
         this.server = server;
-        this.descriptors = new Hashtable<String, AppDescriptor>();
+        this.descriptors = new Hashtable();
-        this.applications = new Hashtable<String, Application>();
+        this.applications = new Hashtable();
-        this.xmlrpcHandlers = new Hashtable<String, Application>();
+        this.xmlrpcHandlers = new Hashtable();
         this.lastModified = 0;
         this.jetty = server.jetty;
     }
@@ -68,10 +70,10 @@ public class ApplicationManager implements XmlRpcHandler {
     protected void checkForChanges() {
         if (this.props.lastModified() > this.lastModified && this.server.getApplicationsOption() == null) {
             try {
-                for (Enumeration<?> e = this.props.keys(); e.hasMoreElements();) {
+                for (Enumeration e = this.props.keys(); e.hasMoreElements();) {
                     String appName = (String) e.nextElement();
 
-                    if ((appName.indexOf(".") == -1) &&
+                    if ((appName.indexOf(".") == -1) && //$NON-NLS-1$
                             (this.applications.get(appName) == null)) {
                         AppDescriptor appDesc = new AppDescriptor(appName);
                         appDesc.start();
@@ -80,7 +82,7 @@ public class ApplicationManager implements XmlRpcHandler {
                 }
 
                 // then stop deleted ones
-                for (Enumeration<AppDescriptor> e = this.descriptors.elements(); e.hasMoreElements();) {
+                for (Enumeration e = this.descriptors.elements(); e.hasMoreElements();) {
                     AppDescriptor appDesc = (AppDescriptor) e.nextElement();
 
                     // check if application has been removed and should be stopped
@@ -146,10 +148,10 @@ public class ApplicationManager implements XmlRpcHandler {
                     desc.start();
                 }
             } else {
-                for (Enumeration<?> e = this.props.keys(); e.hasMoreElements();) {
+                for (Enumeration e = this.props.keys(); e.hasMoreElements();) {
                     String appName = (String) e.nextElement();
 
-                    if (appName.indexOf(".") == -1) {
+                    if (appName.indexOf(".") == -1) { //$NON-NLS-1$
                         String appValue = this.props.getProperty(appName);
 
                         if (appValue != null && appValue.length() > 0) {
@@ -162,7 +164,7 @@ public class ApplicationManager implements XmlRpcHandler {
                 }
             }
 
-            for (Enumeration<AppDescriptor> e = this.descriptors.elements(); e.hasMoreElements();) {
+            for (Enumeration e = this.descriptors.elements(); e.hasMoreElements();) {
                 AppDescriptor appDesc = (AppDescriptor) e.nextElement();
                 appDesc.bind();
             }
@@ -178,7 +180,7 @@ public class ApplicationManager implements XmlRpcHandler {
      *  Stop all running applications.
      */
     public void stopAll() {
-        for (Enumeration<AppDescriptor> en = this.descriptors.elements(); en.hasMoreElements();) {
+        for (Enumeration en = this.descriptors.elements(); en.hasMoreElements();) {
             try {
                 AppDescriptor appDesc = (AppDescriptor) en.nextElement();
 
@@ -206,9 +208,9 @@ public class ApplicationManager implements XmlRpcHandler {
     /**
      * Implements org.apache.xmlrpc.XmlRpcHandler.execute()
      */
-    public Object execute(String method, @SuppressWarnings("rawtypes") Vector params)
+    public Object execute(String method, Vector params)
                    throws Exception {
-        int dot = method.indexOf(".");
+        int dot = method.indexOf("."); //$NON-NLS-1$
 
         if (dot == -1) {
             throw new Exception("Method name \"" + method +
@@ -224,7 +226,7 @@ public class ApplicationManager implements XmlRpcHandler {
         Application app = (Application) this.xmlrpcHandlers.get(handler);
 
         if (app == null) {
-            app = (Application) this.xmlrpcHandlers.get("*");
+            app = (Application) this.xmlrpcHandlers.get("*"); //$NON-NLS-1$
             // use the original method name, the handler is resolved within the app.
             method2 = method;
         }
@@ -239,32 +241,32 @@ public class ApplicationManager implements XmlRpcHandler {
     private String getMountpoint(String mountpoint) {
         mountpoint = mountpoint.trim();
 
-        if ("".equals(mountpoint)) {
+        if ("".equals(mountpoint)) { //$NON-NLS-1$
-            return "/";
+            return "/"; //$NON-NLS-1$
-        } else if (!mountpoint.startsWith("/")) {
+        } else if (!mountpoint.startsWith("/")) { //$NON-NLS-1$
-            return "/" + mountpoint;
+            return "/" + mountpoint; //$NON-NLS-1$
         }
 
         return mountpoint;
     }
 
     private String joinMountpoint(String prefix, String suffix) {
-        if (prefix.endsWith("/") || suffix.startsWith("/")) {
+        if (prefix.endsWith("/") || suffix.startsWith("/")) {  //$NON-NLS-1$//$NON-NLS-2$
             return prefix+suffix;
         }
-        return prefix+"/"+suffix;
+        return prefix+"/"+suffix; //$NON-NLS-1$
     }
 
     private String getPathPattern(String mountpoint) {
-        if (!mountpoint.startsWith("/")) {
+        if (!mountpoint.startsWith("/")) { //$NON-NLS-1$
-            mountpoint = "/"+mountpoint;
+            mountpoint = "/"+mountpoint; //$NON-NLS-1$
         }
 
-        if ("/".equals(mountpoint)) {
+        if ("/".equals(mountpoint)) { //$NON-NLS-1$
-            return "/";
+            return "/"; //$NON-NLS-1$
         }
 
-        if (mountpoint.endsWith("/")) {
+        if (mountpoint.endsWith("/")) { //$NON-NLS-1$
             return mountpoint.substring(0, mountpoint.length()-1);
         }
 
@@ -335,56 +337,56 @@ public class ApplicationManager implements XmlRpcHandler {
         AppDescriptor(String name) {
             ResourceProperties conf = ApplicationManager.this.props.getSubProperties(name + '.');
             this.appName = name;
-            this.mountpoint = getMountpoint(conf.getProperty("mountpoint", this.appName));
+            this.mountpoint = getMountpoint(conf.getProperty("mountpoint", this.appName)); //$NON-NLS-1$
             this.pathPattern = getPathPattern(this.mountpoint);
-            this.staticDir = conf.getProperty("static");
+            this.staticDir = conf.getProperty("static"); //$NON-NLS-1$
-            this.staticMountpoint = getPathPattern(conf.getProperty("staticMountpoint",
+            this.staticMountpoint = getPathPattern(conf.getProperty("staticMountpoint", //$NON-NLS-1$
-                                        joinMountpoint(this.mountpoint, "static")));
+                                        joinMountpoint(this.mountpoint, "static"))); //$NON-NLS-1$
-            this.staticIndex = "true".equalsIgnoreCase(conf.getProperty("staticIndex"));
+            this.staticIndex = "true".equalsIgnoreCase(conf.getProperty("staticIndex"));  //$NON-NLS-1$//$NON-NLS-2$
-            String home = conf.getProperty("staticHome");
+            String home = conf.getProperty("staticHome"); //$NON-NLS-1$
             if (home == null) {
-                this.staticHome = new String[] {"index.html", "index.htm"};
+                this.staticHome = new String[] {"index.html", "index.htm"}; //$NON-NLS-1$ //$NON-NLS-2$
             } else {
-                this.staticHome = StringUtils.split(home, ",");
+                this.staticHome = StringUtils.split(home, ","); //$NON-NLS-1$
             }
-            this.protectedStaticDir = conf.getProperty("protectedStatic");
+            this.protectedStaticDir = conf.getProperty("protectedStatic"); //$NON-NLS-1$
 
-            this.cookieDomain = conf.getProperty("cookieDomain");
+            this.cookieDomain = conf.getProperty("cookieDomain"); //$NON-NLS-1$
-            this.sessionCookieName = conf.getProperty("sessionCookieName");
+            this.sessionCookieName = conf.getProperty("sessionCookieName"); //$NON-NLS-1$
-            this.protectedSessionCookie = conf.getProperty("protectedSessionCookie");
+            this.protectedSessionCookie = conf.getProperty("protectedSessionCookie"); //$NON-NLS-1$
-            this.uploadLimit = conf.getProperty("uploadLimit");
+            this.uploadLimit = conf.getProperty("uploadLimit"); //$NON-NLS-1$
-            this.uploadSoftfail = conf.getProperty("uploadSoftfail");
+            this.uploadSoftfail = conf.getProperty("uploadSoftfail"); //$NON-NLS-1$
-            this.debug = conf.getProperty("debug");
+            this.debug = conf.getProperty("debug"); //$NON-NLS-1$
-            String appDirName = conf.getProperty("appdir");
+            String appDirName = conf.getProperty("appdir"); //$NON-NLS-1$
             this.appDir = (appDirName == null) ? null : getAbsoluteFile(appDirName);
-            String dbDirName = conf.getProperty("dbdir");
+            String dbDirName = conf.getProperty("dbdir"); //$NON-NLS-1$
             this.dbDir = (dbDirName == null) ? null : getAbsoluteFile(dbDirName);
-            this.servletClassName = conf.getProperty("servletClass");
+            this.servletClassName = conf.getProperty("servletClass"); //$NON-NLS-1$
 
             // got ignore dirs
-            this.ignoreDirs = conf.getProperty("ignore");
+            this.ignoreDirs = conf.getProperty("ignore"); //$NON-NLS-1$
 
             // read and configure app repositories
-            ArrayList<Repository> repositoryList = new ArrayList<>();
+            ArrayList repositoryList = new ArrayList();
-            Class<?>[] parameters = { String.class };
+            Class[] parameters = { String.class };
             for (int i = 0; true; i++) {
-                String repositoryArgs = conf.getProperty("repository." + i);
+                String repositoryArgs = conf.getProperty("repository." + i); //$NON-NLS-1$
 
                 if (repositoryArgs != null) {
                     // lookup repository implementation
-                    String repositoryImpl = conf.getProperty("repository." + i +
+                    String repositoryImpl = conf.getProperty("repository." + i + //$NON-NLS-1$
-                                                              ".implementation");
+                                                              ".implementation"); //$NON-NLS-1$
                     if (repositoryImpl == null) {
                         // implementation not set manually, have to guess it
-                        if (repositoryArgs.endsWith(".zip")) {
+                        if (repositoryArgs.endsWith(".zip")) { //$NON-NLS-1$
                             repositoryArgs = findResource(repositoryArgs);
-                            repositoryImpl = "helma.framework.repository.ZipRepository";
+                            repositoryImpl = "helma.framework.repository.ZipRepository"; //$NON-NLS-1$
-                        } else if (repositoryArgs.endsWith(".js")) {
+                        } else if (repositoryArgs.endsWith(".js")) { //$NON-NLS-1$
                             repositoryArgs = findResource(repositoryArgs);
-                            repositoryImpl = "helma.framework.repository.SingleFileRepository";
+                            repositoryImpl = "helma.framework.repository.SingleFileRepository"; //$NON-NLS-1$
                         } else {
                             repositoryArgs = findResource(repositoryArgs);
-                            repositoryImpl = "helma.framework.repository.FileRepository";
+                            repositoryImpl = "helma.framework.repository.FileRepository"; //$NON-NLS-1$
                         }
                     }
 
@@ -481,59 +483,63 @@ public class ApplicationManager implements XmlRpcHandler {
 
                     // if there is a static direcory specified, mount it
                     if (this.staticDir != null) {
+                        String staticPath = getAbsoluteFile(this.staticDir).getCanonicalPath();
 
-                        File staticContent = getAbsoluteFile(this.staticDir);
+                        getLogger().info("Serving static from " + staticPath);
-
-                        getLogger().info("Serving static from " + staticContent.getPath());
                         getLogger().info("Mounting static at " + staticMountpoint);
 
                         ResourceHandler rhandler = new ResourceHandler();
-                        rhandler.setResourceBase(staticContent.getPath());
+                        rhandler.setBaseResource(ResourceFactory.of(rhandler).newResource(staticPath));
                         rhandler.setWelcomeFiles(staticHome);
 
-                        staticContext = new ContextHandler(staticMountpoint);
+                        ContextHandler staticContext = new ContextHandler();
-                        ApplicationManager.this.context.addHandler(staticContext);
+                        staticContext.setContextPath(staticMountpoint);
                         staticContext.setHandler(rhandler);
 
+                        ApplicationManager.this.context.addHandler(staticContext);
                         staticContext.start();
                     }
 
-                    appContext = new ServletContextHandler(context, pathPattern, true, true);
+                    // I hope I am correct assuming Helma does not need Jetty’s session management, but using
-                    Class<? extends EmbeddedServletClient> servletClass = servletClassName == null ?
+                    // `ServletContextHandler.SESSIONS` causes an exception: Shared scheduler not started
-                            EmbeddedServletClient.class : Class.forName(servletClassName).asSubclass(EmbeddedServletClient.class);
+                    appContext = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
+                    appContext.setContextPath(pathPattern);
+                    context.addHandler(appContext);
+
+                    Class servletClass = servletClassName == null ?
+                            EmbeddedServletClient.class : Class.forName(servletClassName);
                     ServletHolder holder = new ServletHolder(servletClass);
                     holder.setInitParameter("application", appName);
                     appContext.addServlet(holder, "/*");
 
                     if (this.cookieDomain != null) {
-                        holder.setInitParameter("cookieDomain", this.cookieDomain);
+                        holder.setInitParameter("cookieDomain", this.cookieDomain); //$NON-NLS-1$
                     }
 
                     if (this.sessionCookieName != null) {
-                        holder.setInitParameter("sessionCookieName", this.sessionCookieName);
+                        holder.setInitParameter("sessionCookieName", this.sessionCookieName); //$NON-NLS-1$
                     }
 
                     if (this.protectedSessionCookie != null) {
-                        holder.setInitParameter("protectedSessionCookie", this.protectedSessionCookie);
+                        holder.setInitParameter("protectedSessionCookie", this.protectedSessionCookie); //$NON-NLS-1$
                     }
 
                     if (this.uploadLimit != null) {
-                        holder.setInitParameter("uploadLimit", this.uploadLimit);
+                        holder.setInitParameter("uploadLimit", this.uploadLimit); //$NON-NLS-1$
                     }
 
                     if (this.uploadSoftfail != null) {
-                        holder.setInitParameter("uploadSoftfail", this.uploadSoftfail);
+                        holder.setInitParameter("uploadSoftfail", this.uploadSoftfail); //$NON-NLS-1$
                     }
 
                     if (this.debug != null) {
-                        holder.setInitParameter("debug", this.debug);
+                        holder.setInitParameter("debug", this.debug); //$NON-NLS-1$
                     }
 
                     if (protectedStaticDir != null) {
-                        File protectedContent = getAbsoluteFile(protectedStaticDir);
+                        String protectedContent = getAbsoluteFile(protectedStaticDir).getCanonicalPath();
-                        appContext.setResourceBase(protectedContent.getPath());
+                        appContext.setBaseResourceAsString(protectedContent);
-                        getLogger().info("Serving protected static from " +
+                        getLogger().info("Serving protected static from " + protectedContent);
-                                       protectedContent.getPath());
                     }
 
                     // Remap the context paths and start
@@ -557,7 +563,9 @@ public class ApplicationManager implements XmlRpcHandler {
                 // unbind from Jetty HTTP server
                 if (ApplicationManager.this.jetty != null) {
                     if (this.appContext != null) {
-                        ApplicationManager.this.context.removeHandler(this.appContext);
+                        // Adding appContext to the ContextHandlerCollection works (see above) but removing it causes an exception of
+                        // incompatible types: ServletContextHandler cannot be converted to Handler
+                        //ApplicationManager.this.context.removeHandler(this.appContext);
                         this.appContext.stop();
                         this.appContext.destroy();
                         this.appContext = null;
@@ -584,7 +592,7 @@ public class ApplicationManager implements XmlRpcHandler {
 
         @Override
         public String toString() {
-            return "[AppDescriptor "+this.app+"]";
+            return "[AppDescriptor "+this.app+"]"; //$NON-NLS-1$ //$NON-NLS-2$
         }
     }
 }

src/main/java/helma/main/CommandlineRunner.java

@@ -41,10 +41,10 @@ public class CommandlineRunner {
 
         ServerConfig config = new ServerConfig();
         String commandStr = null;
-        Vector<String> funcArgs = new Vector<>();
+        Vector funcArgs = new Vector();
     
         // get possible environment setting for helma home
-        if (System.getProperty("helma.home") != null) {
+        if (System.getProperty("helma.home")!=null) {
             config.setHomeDir(new File(System.getProperty("helma.home")));
         }
 

src/main/java/helma/main/HelmaSecurityManager.java

@@ -30,13 +30,11 @@ import java.util.HashSet;
  *  a utility method <code>getApplication</code> that can be used to determine
  *  the name of the application trying to execute the action in question, if any.
  */
-@Deprecated
-@SuppressWarnings("removal")
 public class HelmaSecurityManager extends SecurityManager {
     // The set of actions forbidden to application code.
     // We are pretty permissive, forbidding only System.exit() 
     // and setting the security manager.
-    private final static HashSet<String> forbidden = new HashSet<>();
+    private final static HashSet forbidden = new HashSet();
 
     static {
         forbidden.add("exitVM");
@@ -51,7 +49,7 @@ public class HelmaSecurityManager extends SecurityManager {
     public void checkPermission(Permission p) {
         if (p instanceof RuntimePermission) {
             if (forbidden.contains(p.getName())) {
-                Class<?>[] classes = getClassContext();
+                Class[] classes = getClassContext();
 
                 for (int i = 0; i < classes.length; i++) {
                     if (classes[i].getClassLoader() instanceof AppClassLoader) {
@@ -100,7 +98,7 @@ public class HelmaSecurityManager extends SecurityManager {
      * @param status ...
      */
     public void checkExit(int status) {
-        Class<?>[] classes = getClassContext();
+        Class[] classes = getClassContext();
 
         for (int i = 0; i < classes.length; i++) {
             if (classes[i].getClassLoader() instanceof AppClassLoader) {
@@ -289,7 +287,7 @@ public class HelmaSecurityManager extends SecurityManager {
      * @param clazz ...
      * @param which ...
      */
-    public void checkMemberAccess(Class<?> clazz, int which) {
+    public void checkMemberAccess(Class clazz, int which) {
     }
 
     /**
@@ -306,7 +304,7 @@ public class HelmaSecurityManager extends SecurityManager {
      *  does not belong to any application.
      */
     protected String getApplication() {
-        Class<?>[] classes = getClassContext();
+        Class[] classes = getClassContext();
 
         for (int i = 0; i < classes.length; i++) {
             if (classes[i].getClassLoader() instanceof AppClassLoader) {

src/main/java/helma/main/HelmaShutdownHook.java

@@ -16,6 +16,9 @@
 
 package helma.main;
 
+import helma.util.*;
+import org.apache.commons.logging.LogFactory;
+
 /**
  * ShutdownHook that shuts down all running Helma applications on exit.
  */

src/main/java/helma/main/JettyServer.java

@@ -16,12 +16,12 @@
 
 package helma.main;
 
-
 import org.eclipse.jetty.server.Connector;
 import org.eclipse.jetty.server.HttpConfiguration;
 import org.eclipse.jetty.server.HttpConnectionFactory;
 import org.eclipse.jetty.server.ServerConnector;
 import org.eclipse.jetty.util.resource.Resource;
+import org.eclipse.jetty.util.resource.URLResourceFactory;
 import org.eclipse.jetty.xml.XmlConfiguration;
 
 import java.net.URL;
@@ -37,18 +37,20 @@ public class JettyServer {
     public static JettyServer init(Server server, ServerConfig config) throws IOException {
         File configFile = config.getConfigFile();
         if (configFile != null && configFile.exists()) {
-            return new JettyServer(configFile.toURI().toURL());
+            URLResourceFactory resourceFactory = new URLResourceFactory();
+            Resource resource = resourceFactory.newResource(configFile.toURI());
+            return new JettyServer(resource);
         } else if (config.hasWebsrvPort()) {
             return new JettyServer(config.getWebsrvPort(), server);
         }
         return null;
     }
 
-    private JettyServer(URL url) throws IOException {
+    private JettyServer(Resource resource) throws IOException {
         http = new org.eclipse.jetty.server.Server();
 
         try {
-            XmlConfiguration config = new XmlConfiguration(Resource.newResource(url));
+            XmlConfiguration config = new XmlConfiguration(resource);
             config.configure(http);
 
         } catch (IOException e) {
@@ -74,7 +76,6 @@ public class JettyServer {
             connector.setHost(webPort.getAddress().getHostAddress());
             connector.setPort(webPort.getPort());
             connector.setIdleTimeout(30000);
-            // Removed deprecated method setSoLingerTime
             connector.setAcceptorPriorityDelta(0);
             connector.setAcceptQueueSize(0);
 
@@ -101,12 +102,13 @@ public class JettyServer {
     }
 
     private void openListeners() throws IOException {
-        // opening the listener here allows us to run on priviledged port 80 under jsvc
+        // opening the listener here allows us to run on privileged port 80 under jsvc
         // even as non-root user, because init() is called with root privileges
         // while start() will be called with the user we will actually run as
-        Connector[] connectors = http.getConnectors();
+        for (var connector : http.getConnectors()) {
-        for (int i = 0; i < connectors.length; i++) {
+            if (connector instanceof ServerConnector) {
-            ((ServerConnector) connectors[i]).open();
+                ((ServerConnector) connector).open();
+            }
         }
     }
 }

src/main/java/helma/main/Server.java

@@ -21,6 +21,7 @@ import helma.framework.repository.FileResource;
 import helma.framework.core.*;
 import helma.objectmodel.db.DbSource;
 import helma.util.*;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.xmlrpc.*;
@@ -29,6 +30,8 @@ import java.io.*;
 import java.util.*;
 import java.net.*;
 
+import helma.util.ResourceProperties;
+
 /**
  * Helma server main class.
  */
@@ -65,14 +68,14 @@ public class Server implements Runnable {
     // explicitly listed hosts.
     public boolean paranoid;
     private ApplicationManager appManager;
-    private Vector<HelmaExtension> extensions;
+    private Vector extensions;
     private Thread mainThread;
 
     // configuration
     ServerConfig config;
 
     // map of server-wide database sources
-    Hashtable<String, DbSource> dbSources;
+    Hashtable dbSources;
 
     // the embedded web server
     // protected Serve websrv;
@@ -150,8 +153,8 @@ public class Server implements Runnable {
         String javaVersion = System.getProperty("java.version", "0");
         int majorVersion = Integer.parseInt(javaVersion.split("\\.")[0]);
 
-        if (majorVersion < 11) {
+        if (majorVersion < 17) {
-            System.err.println("This version of Helma requires Java 11 or greater.");
+            System.err.println("This version of Helma requires Java 17 or greater.");
 
             if (majorVersion == 0) { // don't think this will ever happen, but you never know
                 System.err.println("Your Java Runtime did not provide a version number. Please update to a more recent version.");
@@ -430,10 +433,10 @@ public class Server implements Runnable {
         // logger.debug("TimeZone = " +
         //                 TimeZone.getDefault().getDisplayName(Locale.getDefault()));
 
-        dbSources = new Hashtable<String, DbSource>();
+        dbSources = new Hashtable();
 
         // try to load the extensions
-        extensions = new Vector<HelmaExtension>();
+        extensions = new Vector();
         if (sysProps.getProperty("extensions") != null) {
             initExtensions();
         }
@@ -450,8 +453,8 @@ public class Server implements Runnable {
             String extClassName = tok.nextToken().trim();
 
             try {
-                Class<? extends HelmaExtension> extClass = Class.forName(extClassName).asSubclass(HelmaExtension.class);
+                Class extClass = Class.forName(extClassName);
-                HelmaExtension ext = (HelmaExtension) extClass.getDeclaredConstructor().newInstance();
+                HelmaExtension ext = (HelmaExtension) extClass.newInstance();
                 ext.init(this);
                 extensions.add(ext);
                 logger.info("Loaded: " + extClassName);
@@ -570,9 +573,7 @@ public class Server implements Runnable {
             String secManClass = sysProps.getProperty("securityManager");
 
             if (secManClass != null) {
-                @SuppressWarnings("removal")
                 SecurityManager secMan = (SecurityManager) Class.forName(secManClass)
-                                                                .getDeclaredConstructor()
                                                                 .newInstance();
 
                 System.setSecurityManager(secMan);
@@ -764,7 +765,7 @@ public class Server implements Runnable {
      *
      * @return ...
      */
-    public Vector<HelmaExtension> getExtensions() {
+    public Vector getExtensions() {
         return extensions;
     }
 
@@ -805,3 +806,5 @@ public class Server implements Runnable {
         return new InetSocketAddress(addr, port);
     }
 }
+
+

src/main/java/helma/objectmodel/TransientNode.java

@@ -18,6 +18,7 @@ package helma.objectmodel;
 
 import helma.framework.IPathElement;
 import helma.framework.core.Application;
+import helma.framework.core.RequestEvaluator;
 import helma.objectmodel.db.DbMapping;
 import helma.objectmodel.db.Relation;
 import helma.objectmodel.db.Node;
@@ -64,7 +65,6 @@ public class TransientNode implements INode, Serializable {
         this.app=app;
     }
     
-    @SuppressWarnings("unused")
     private TransientNode() {
         app=null;
     }

src/main/java/helma/objectmodel/db/NodeManager.java

@@ -22,7 +22,6 @@ import helma.objectmodel.*;
 import helma.objectmodel.dom.XmlDatabase;
 
 import java.io.*;
-import java.lang.reflect.InvocationTargetException;
 import java.math.BigDecimal;
 import java.sql.*;
 import java.util.*;
@@ -60,25 +59,19 @@ public final class NodeManager {
      * Initialize the NodeManager for the given dbHome and
      * application properties. An embedded database will be
      * created in dbHome if one doesn't already exist.
-     * @throws SecurityException
-     * @throws NoSuchMethodException
-     * @throws InvocationTargetException
-     * @throws IllegalArgumentException
      */
     public void init(File dbHome, Properties props)
             throws DatabaseException, ClassNotFoundException,
-                   IllegalAccessException, InstantiationException,
+                   IllegalAccessException, InstantiationException {
-                   IllegalArgumentException, InvocationTargetException,
-                   NoSuchMethodException, SecurityException {
         String cacheImpl = props.getProperty("cacheimpl", "helma.util.CacheMap");
 
-        cache = (ObjectCache) Class.forName(cacheImpl).getDeclaredConstructor().newInstance();
+        cache = (ObjectCache) Class.forName(cacheImpl).newInstance();
         cache.init(app);
 
         String idgenImpl = props.getProperty("idGeneratorImpl");
 
         if (idgenImpl != null) {
-            idgen = (IDGenerator) Class.forName(idgenImpl).getDeclaredConstructor().newInstance();
+            idgen = (IDGenerator) Class.forName(idgenImpl).newInstance();
             idgen.init(app);
         }
 

src/main/java/helma/objectmodel/db/SubnodeList.java

@@ -37,7 +37,6 @@ public class SubnodeList implements Serializable {
     /**
      * Hide/disable zero argument constructor for subclasses
      */
-    @SuppressWarnings("unused")
     private SubnodeList()  {}
 
     /**

src/main/java/helma/objectmodel/db/Transactor.java

@@ -463,6 +463,8 @@ public class Transactor {
             node.clearWriteLock();
         }
 
+        long now = System.currentTimeMillis();
+
         // set last subnode change times in parent nodes
         for (Iterator i = parentNodes.iterator(); i.hasNext(); ) {
             Node node = (Node) i.next();

src/main/java/helma/scripting/ScriptingException.java

@@ -48,7 +48,14 @@ public class ScriptingException extends Exception {
      */
     private void setScriptStack(Throwable cause) {
         if (cause instanceof RhinoException) {
-            scriptStack = ((RhinoException) cause).getScriptStackTrace();
+            FilenameFilter filter = new FilenameFilter() {
+                public boolean accept(File dir, String name) {
+                    return name.endsWith(".js") ||
+                           name.endsWith(".hac") ||
+                           name.endsWith(".hsp");
+                }
+            };
+            scriptStack = ((RhinoException) cause).getScriptStackTrace(filter);
         }
     }
 

src/main/java/helma/scripting/rhino/CompiledOrInterpretedModuleScriptProvider.java

@@ -48,11 +48,11 @@ public class CompiledOrInterpretedModuleScriptProvider extends StrongCachingModu
             // unlikely, but possible exception during loading the module script without compilation
             Exception exception;
             // get the application's optimization level
-            boolean interpretedMode = cx.isInterpretedMode();
+            int optimizationLevel = cx.getOptimizationLevel();
             
             try {
                 // set the optimization level to not compile, but interpret
-                cx.setInterpretedMode(true);
+                cx.setOptimizationLevel(-1);
                 // load the module script with the newly set optimization level
                 ModuleScript moduleScript = super.getModuleScript(cx, moduleId, moduleUri, baseUri, paths);
                 // return the module script
@@ -62,7 +62,7 @@ public class CompiledOrInterpretedModuleScriptProvider extends StrongCachingModu
                 exception = e;
             } finally {
                 // re-set the optimization
-                cx.setInterpretedMode(interpretedMode);
+                cx.setOptimizationLevel(optimizationLevel);
             }
             
             // re-throw the exception catched when trying to load the module script without compilation 

src/main/java/helma/scripting/rhino/HopObjectCtor.java

@@ -149,7 +149,7 @@ public class HopObjectCtor extends FunctionObject {
         private static final long serialVersionUID = -8041352998956882647L;
 
         public GetById(Scriptable scope) {
-            ScriptRuntime.setFunctionProtoAndParent(this, Context.getCurrentContext(), scope);
+            ScriptRuntime.setFunctionProtoAndParent(this, scope);
         }
 
         /**
@@ -201,7 +201,7 @@ public class HopObjectCtor extends FunctionObject {
         private static final long serialVersionUID = -4046933261468527204L;
 
         public HopCollection(Scriptable scope) {
-            ScriptRuntime.setFunctionProtoAndParent(this, Context.getCurrentContext(), scope);
+            ScriptRuntime.setFunctionProtoAndParent(this, scope);
         }
 
         public Object call(Context cx, Scriptable scope, Scriptable thisObj, Object[] args) {

src/main/java/helma/scripting/rhino/JSAdapter.java

@@ -67,7 +67,7 @@ import org.mozilla.javascript.*;
  * @author A. Sundararajan
  * @since 1.6
  */
-public final class JSAdapter implements Function {
+public final class JSAdapter implements Scriptable, Function {
     private JSAdapter(Scriptable obj) {
         setAdaptee(obj);
     }

src/main/java/helma/scripting/rhino/JSONModuleSource.java

@@ -19,15 +19,15 @@ public class JSONModuleSource extends ModuleSource {
     @Override
     public Reader getReader() {
         StringBuffer content = new StringBuffer();
-        content.append("module.exports = ");
+        content.append("module.exports = "); //$NON-NLS-1$
         
         try {
-            content.append(IOUtils.toString(this.getUri().toURL().openStream(), "UTF-8"));
+            content.append(IOUtils.toString(this.getUri().toURL().openStream()));
         } catch (IOException e) {
-            content.append("null");
+            content.append("null"); //$NON-NLS-1$
         }
         
-        content.append(";");
+        content.append(";"); //$NON-NLS-1$
         
         return new StringReader(content.toString());
     }

src/main/java/helma/scripting/rhino/JavaObject.java

@@ -17,6 +17,7 @@
 package helma.scripting.rhino;
 
 import helma.framework.core.*;
+import helma.framework.ResponseTrans;
 import helma.framework.repository.Resource;
 import org.mozilla.javascript.*;
 import java.lang.reflect.Method;

src/main/java/helma/scripting/rhino/NodeModulesProvider.java

@@ -73,7 +73,7 @@ public class NodeModulesProvider extends UrlModuleSourceProvider {
         // check if the file exists and is a file
         if (file.exists() && file.isFile()) {
             // check if the file is a JSON file
-            if (file.getAbsolutePath().toLowerCase().endsWith(".json")) {
+            if (file.getAbsolutePath().toLowerCase().endsWith(".json")) { //$NON-NLS-1$
                 // return a JSON module source
                 return new JSONModuleSource(null, file.toURI(), base, validator);
             } else {
@@ -83,7 +83,7 @@ public class NodeModulesProvider extends UrlModuleSourceProvider {
         }
 
         // lets assume the module is a JS file
-        file = new File(new File(uri).getPath() + ".js");
+        file = new File(new File(uri).getPath() + ".js"); //$NON-NLS-1$
         // check if a file.js exists and is a file
         if (file.exists() && file.isFile()) {
             // do what would have been done anyways
@@ -91,7 +91,7 @@ public class NodeModulesProvider extends UrlModuleSourceProvider {
         }
 
         // lets assume the module is a JSON file
-        file = new File(new File(uri).getPath() + ".json");
+        file = new File(new File(uri).getPath() + ".json"); //$NON-NLS-1$
         // check if a file.json exists and is a file
         if (file.exists() && file.isFile()) {
             // return a JSON module source
@@ -135,17 +135,17 @@ public class NodeModulesProvider extends UrlModuleSourceProvider {
             ModuleSource moduleSource;
 
             // lets assume that there is a "package.json" file in the directory
-            File packageFile = new File(directory, "package.json");
+            File packageFile = new File(directory, "package.json"); //$NON-NLS-1$
 
             // check if the there is a "package.json" file in the directory
             if (packageFile.exists() && packageFile.isFile()) {
                 // parse the JSON file
-                JsonObject json = JsonParser
+                JsonObject json = new JsonParser()
-                        .parseString(new String(Files.readAllBytes(packageFile.toPath()))).getAsJsonObject();
+                        .parse(new String(Files.readAllBytes(packageFile.toPath()))).getAsJsonObject();
                 // check if the JSON file defines a main JS file
-                if (json.has("main")) {
+                if (json.has("main")) { //$NON-NLS-1$
                     // get the main JS file, removing the filename extension
-                    String main = FilenameUtils.removeExtension(json.get("main").getAsString());
+                    String main = FilenameUtils.removeExtension(json.get("main").getAsString()); //$NON-NLS-1$
 
                     // load as file
                     moduleSource = this.loadAsFile(new File(directory, main).toURI(), base, validator);
@@ -158,7 +158,7 @@ public class NodeModulesProvider extends UrlModuleSourceProvider {
             }
 
             // load as index
-            moduleSource = this.loadAsFile(new File(directory, "index").toURI(), base, validator);
+            moduleSource = this.loadAsFile(new File(directory, "index").toURI(), base, validator); //$NON-NLS-1$
             // check if something was loaded
             if (moduleSource != null) {
                 // return the loaded module source

src/main/java/helma/scripting/rhino/RhinoCore.java

@@ -44,6 +44,7 @@ import org.mozilla.javascript.Undefined;
 import org.mozilla.javascript.WrapFactory;
 import org.mozilla.javascript.Wrapper;
 import org.mozilla.javascript.commonjs.module.RequireBuilder;
+import org.mozilla.javascript.commonjs.module.provider.StrongCachingModuleScriptProvider;
 import org.mozilla.javascript.tools.debugger.ScopeProvider;
 
 import java.io.*;
@@ -1232,7 +1233,7 @@ public final class RhinoCore implements ScopeProvider {
 
         protected void onContextCreated(Context cx) {
             cx.setWrapFactory(wrapper);
-            cx.setInterpretedMode(optLevel < 0);
+            cx.setOptimizationLevel(optLevel);
             cx.setInstructionObserverThreshold(10000);
             if (Context.isValidLanguageVersion(languageVersion)) {
                 cx.setLanguageVersion(languageVersion);

src/main/java/helma/scripting/rhino/SerializationProxy.java

@@ -49,15 +49,13 @@ class ScriptBeanProxy implements SerializationProxy {
      * @return the object represented by this proxy
      */
     public Object getObject(RhinoEngine engine) {
-        Object object = null;
-
         try {
-            object = engine.global.get(name, engine.global);
+            Object object = engine.global.get(name, engine.global);
         } catch (Exception e) {
             System.out.println(name);
         }
         
-        return object;
+        return engine.global.get(name, engine.global);
     }
 }
 

src/main/java/helma/scripting/rhino/debug/Profiler.java

@@ -151,9 +151,7 @@ public class Profiler implements Debugger {
                     name.substring(prefixLength)
             };
             formatter.format("%1$7d ms %2$5d ms %3$6d    %4$s%n", args);
-            String result = formatter.toString();
+            return formatter.toString();
-            formatter.close();
-            return result;
         }
     }
 }

src/main/java/helma/scripting/rhino/debug/Tracer.java

@@ -17,6 +17,7 @@
 package helma.scripting.rhino.debug;
 
 import helma.framework.ResponseTrans;
+import helma.util.HtmlEncoder;
 import org.mozilla.javascript.*;
 import org.mozilla.javascript.debug.*;
 import java.util.ArrayList;

src/main/java/helma/scripting/rhino/extensions/DatabaseObject.java

@@ -25,7 +25,6 @@ import java.util.Enumeration;
 import java.util.Vector;
 import java.io.IOException;
 import java.io.Reader;
-import java.lang.reflect.InvocationTargetException;
 import java.math.BigDecimal;
 import java.sql.*;
 
@@ -63,13 +62,9 @@ public class DatabaseObject {
      * Create a new database object based on a driver name, with driver on the classpath
      *
      * @param driverName The class name of the JDBC driver
-     * @throws SecurityException
-     * @throws NoSuchMethodException
-     * @throws InvocationTargetException
-     * @throws IllegalArgumentException
      */
 
-    DatabaseObject(String driverName) throws IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException {
+    DatabaseObject(String driverName) {
         this.driverName = driverName;
         try {
             Class driverClass = Class.forName(driverName);
@@ -78,7 +73,7 @@ public class DatabaseObject {
                 // System.err.println("##Bad class " + driverClass);
                 lastError = new RuntimeException("Class " + driverClass + " is not a JDBC driver");
             }
-            driverClass.getDeclaredConstructor().newInstance(); // may be needed by some drivers, harmless for others
+            driverClass.newInstance(); // may be needed by some drivers, harmless for others
         } catch (ClassNotFoundException e) {
             // System.err.println("##Cannot find driver class: " + e);
             // e.printStackTrace();
@@ -453,6 +448,51 @@ public class DatabaseObject {
            return null;
         }
 
+        /* FIXME: dunno if this method is still used somewhere
+        public Object getProperty(String propertyName, int hash) {
+            //System.err.println(" &&& Getting property '" + propertyName + "'");
+
+            // Length property is firsy checked
+
+            // First return system or or prototype properties
+            if (propertyName.equals("length")) {
+                 return Integer.valueOf(colNames.size());
+            } else {
+               if (resultSet == null) {
+                    lastError = new SQLException("Attempt to access a released result set");
+                    return null;
+               }
+                if (!firstRowSeen) {
+                    lastError = new SQLException("Attempt to access data before the first row is read");
+                    return null;
+                }
+               try {
+                    int index = -1; // indicates not a valid index value
+                    try {
+                        char c = propertyName.charAt(0);
+                        if ('0' <= c && c <= '9') {
+                           index = Integer.parseInt(propertyName);
+                        }
+                    } catch (NumberFormatException e) {
+                    } catch (StringIndexOutOfBoundsException e) { // for charAt
+                    }
+                    if (index>=0) {
+                        return getProperty(index);
+                    }
+                   Object value = resultSet.getObject(propertyName);
+                   // IServer.getLogger().log("&& @VALUE : " + value);
+                   lastError = null;
+                   return value;
+               } catch (SQLException e) {
+                  // System.err.println("##Cannot get property '" + propertyName + "' " + e);
+                  // e.printStackTrace();
+                  lastError = e;
+               }
+            }
+            return null;
+        }
+        */
+
         public Object getProperty(int index) {
             if (!firstRowSeen) {
                 lastError = new SQLException("Attempt to access data before the first row is read");

src/main/java/helma/scripting/rhino/extensions/MailObject.java

@@ -39,7 +39,7 @@ import javax.mail.internet.MimeUtility;
  * A JavaScript wrapper around a JavaMail message class to send
  * mail via SMTP from Helma
  */
-public class MailObject extends ScriptableObject {
+public class MailObject extends ScriptableObject implements Serializable {
 
     private static final long serialVersionUID = -4834981850233741039L;
 

src/main/java/helma/scripting/rhino/extensions/XmlObject.java

@@ -126,9 +126,7 @@ public class XmlObject {
         writer.setDatabaseMode(dbmode);
         writer.write(node);
         writer.flush();
-        String result = out.toString("UTF-8");
+        return out.toString("UTF-8");
-        writer.close();
-        return result;
     }
 
     /**

src/main/java/helma/servlet/AbstractServletClient.java

@@ -22,18 +22,29 @@ package helma.servlet;
 import helma.framework.*;
 import helma.framework.core.Application;
 import helma.util.*;
+
 import java.io.*;
-import java.util.*;
+import java.nio.charset.Charset;
+import java.nio.charset.UnsupportedCharsetException;
+
 import java.security.SecureRandom;
 import java.security.NoSuchAlgorithmException;
-import javax.servlet.*;
+import java.util.*;
-import javax.servlet.http.*;
+
+import jakarta.servlet.*;
+import jakarta.servlet.http.*;
 
 import org.apache.commons.codec.binary.Base64;
-import org.apache.commons.fileupload.disk.DiskFileItemFactory;
+
-import org.apache.commons.fileupload.*;
+import org.apache.commons.fileupload2.core.DiskFileItemFactory;
-import org.apache.commons.fileupload.servlet.ServletFileUpload;
+import org.apache.commons.fileupload2.core.FileItem;
-import org.apache.commons.fileupload.servlet.ServletRequestContext;
+import org.apache.commons.fileupload2.core.FileUploadException;
+import org.apache.commons.fileupload2.core.FileUploadSizeException;
+import org.apache.commons.fileupload2.core.ProgressListener;
+
+import org.apache.commons.fileupload2.jakarta.JakartaServletDiskFileUpload;
+import org.apache.commons.fileupload2.jakarta.JakartaServletFileUpload;
+import org.apache.commons.fileupload2.jakarta.JakartaServletRequestContext;
 
 /**
  * This is an abstract Hop servlet adapter. This class communicates with hop applications
@@ -217,10 +228,10 @@ public abstract class AbstractServletClient extends HttpServlet {
             parseParameters(request, reqtrans, encoding);
 
             // read file uploads
-            List<FileItem> uploads = null;
+            List uploads = null;
-            ServletRequestContext reqcx = new ServletRequestContext(request);
+            JakartaServletRequestContext reqcx = new JakartaServletRequestContext(request);
 
-            if (ServletFileUpload.isMultipartContent(reqcx)) {
+            if (JakartaServletFileUpload.isMultipartContent(reqcx)) {
                 // get session for upload progress monitoring
                 UploadStatus uploadStatus = getApplication().getUploadStatus(reqtrans);
                 try {
@@ -228,7 +239,7 @@ public abstract class AbstractServletClient extends HttpServlet {
                 } catch (Exception upx) {
                     log("Error in file upload", upx);
                     String message;
-                    boolean tooLarge = (upx instanceof FileUploadBase.SizeLimitExceededException);
+                    boolean tooLarge = (upx instanceof FileUploadSizeException);
                     if (tooLarge) {
                         message = "File upload size exceeds limit of " + uploadLimit + " kB";
                     } else {
@@ -517,9 +528,9 @@ public abstract class AbstractServletClient extends HttpServlet {
             checksum[i] = (byte) (n);
             n >>>= 8;
         }
-        String etag = "\"" + new String(Base64.encodeBase64(checksum)) + "\"";
+        String etag = "\"" + new String(Base64.encodeBase64(checksum)) + "\"";  //$NON-NLS-1$//$NON-NLS-2$
-        res.setHeader("ETag", etag);
+        res.setHeader("ETag", etag); //$NON-NLS-1$
-        String etagHeader = req.getHeader("If-None-Match");
+        String etagHeader = req.getHeader("If-None-Match"); //$NON-NLS-1$
         if (etagHeader != null) {
             StringTokenizer st = new StringTokenizer(etagHeader, ", \r\n");
             while (st.hasMoreTokens()) {
@@ -637,7 +648,7 @@ public abstract class AbstractServletClient extends HttpServlet {
      * Put name and value pair in map.  When name already exist, add value
      * to array of values.
      */
-    private static void putMapEntry(Map<String, String[]> map, String name, String value) {
+    private static void putMapEntry(Map map, String name, String value) {
         String[] newValues = null;
         String[] oldValues = (String[]) map.get(name);
 
@@ -653,12 +664,12 @@ public abstract class AbstractServletClient extends HttpServlet {
         map.put(name, newValues);
     }
 
-    protected List<FileItem> parseUploads(ServletRequestContext reqcx, RequestTrans reqtrans,
+    protected List parseUploads(JakartaServletRequestContext reqcx, RequestTrans reqtrans,
                                 final UploadStatus uploadStatus, String encoding)
-                throws FileUploadException, UnsupportedEncodingException {
+            throws FileUploadException, UnsupportedCharsetException, IOException {
         // handle file upload
-        DiskFileItemFactory factory = new DiskFileItemFactory();
+        DiskFileItemFactory factory = DiskFileItemFactory.builder().get();
-        FileUpload upload = new FileUpload(factory);
+        JakartaServletFileUpload upload = new JakartaServletFileUpload(factory);
         // use upload limit for individual file size, but also set a limit on overall size
         upload.setFileSizeMax(uploadLimit * 1024);
         upload.setSizeMax(totalUploadLimit * 1024);
@@ -672,8 +683,8 @@ public abstract class AbstractServletClient extends HttpServlet {
             });
         }
 
-        List<FileItem> uploads = upload.parseRequest(reqcx);
+        List uploads = upload.parseRequest(reqcx);
-        Iterator<FileItem> it = uploads.iterator();
+        Iterator it = uploads.iterator();
 
         while (it.hasNext()) {
             FileItem item = (FileItem) it.next();
@@ -681,7 +692,7 @@ public abstract class AbstractServletClient extends HttpServlet {
             Object value;
             // check if this is an ordinary HTML form element or a file upload
             if (item.isFormField()) {
-                value =  item.getString(encoding);
+                value =  item.getString(Charset.forName(encoding));
             } else {
                 value = new MimePart(item);
             }
@@ -705,7 +716,7 @@ public abstract class AbstractServletClient extends HttpServlet {
             return;
         }
 
-        HashMap<String, String[]> parameters = new HashMap<>();
+        HashMap parameters = new HashMap();
 
         // Parse any query string parameters from the request
         if (queryString != null) {
@@ -764,7 +775,7 @@ public abstract class AbstractServletClient extends HttpServlet {
      *
      * @exception UnsupportedEncodingException if the data is malformed
      */
-    public static void parseParameters(Map<String, String[]> map, byte[] data, String encoding, boolean isPost)
+    public static void parseParameters(Map map, byte[] data, String encoding, boolean isPost)
                                 throws UnsupportedEncodingException {
         if ((data != null) && (data.length > 0)) {
             int ix = 0;

src/main/java/helma/servlet/EmbeddedServletClient.java

@@ -16,9 +16,10 @@
 
 package helma.servlet;
 
+import helma.framework.*;
 import helma.framework.core.Application;
 import helma.main.*;
-import javax.servlet.*;
+import jakarta.servlet.*;
 
 /**
  *  Servlet client that runs a Helma application for the embedded

src/main/java/helma/servlet/StandaloneServletClient.java

@@ -23,7 +23,7 @@ import helma.main.ServerConfig;
 import helma.main.Server;
 
 import java.io.*;
-import javax.servlet.*;
+import jakarta.servlet.*;
 import java.util.*;
 
 /**

src/main/java/helma/util/CryptResource.java

@@ -23,6 +23,7 @@ import java.util.StringTokenizer;
 
 import org.apache.commons.codec.digest.DigestUtils;
 
+import helma.framework.repository.Resource;
 import helma.framework.repository.Resource;
 
 /**

src/main/java/helma/util/MimePart.java

@@ -16,7 +16,7 @@
 
 package helma.util;
 
-import org.apache.commons.fileupload.FileItem;
+import org.apache.commons.fileupload2.core.FileItem;
 
 import java.io.*;
 import java.util.Date;
@@ -238,7 +238,7 @@ public class MimePart implements Serializable {
             file = new File(base, filename);
 
             if (fileItem != null) {
-                fileItem.write(file);
+                fileItem.write(file.toPath());
                 // null out fileItem, since calling write() may have moved the temp file
                 fileItem = null;
             } else {