java-web-start

Recently I converted a Swing application to Webstart. The process was pretty straightforward, but I found that after I close all windows, my application's JVM did not terminate. The thread dump showed that there are a couple of non-daemon threads, notably Swing's EDT, AWT and a couple of websart related threads. The actual strategy used is that each window increments a counter when it is created and decrements one when it is closed. The default close operation is DISPOSE_ON_CLOSE. Wen the counter reaches zero, I stop all threadpools and release all JNI resources. When I launched the

I have a project that uses Java webstart technology. I decided to upgrade the Java version from 8 to 9. However, I faced the following error on compiling: error: package javax.jnlp is not visible import javax.jnlp.DownloadServiceListener; ^ (package javax.jnlp is declared in module java.jnlp, which is not in the module graph) I tried to include C:\Program Files\Java\jdk-9\lib\javaws.jar to the classpath, but still the same issue remains. It looks like java.jnlp is not resolved by default for code on the class path (much like Java EE modules ). The solution is to add it explicitly with --add

I'm creating a Web Start application which would benefit from some of the newer JVM options (especially escape analysis, G1 garbage collector etc.) At the same time, I would like the application to work gracefully on older JVMs that do not support these options. Is there a good way of achieving this? David J. Liszewski As Thorbjørn mentioned, Java 6 u10 allows multiple j2se elements in JNLP. The JNLP File Syntax resources section of the latest Java Web Start Developer's Guide , indicates that multiple j2se elements, each with java-vm-args attributes can be specified with the most preferred

While trying to run Jar application using JWS (JNLP) launch. It has been giving me this error. Can't even find where is the mistake. Any directions would help. If someone could tell me where is the potential location of this error, I could find post that code here. java.lang.NumberFormatException: For input string: "\Tools_Dev\TestApp\dist" at java.lang.NumberFormatException.forInputString(Unknown Source) at java.lang.Integer.parseInt(Unknown Source) at java.lang.Integer.parseInt(Unknown Source) at com.sun.deploy.security.DeployManifestChecker.verifyCodebaseEx(Unknown Source) at com.sun.deploy

We recently updated to Java 7 Update 25 from Update 21 and are now experiencing a null pointer exception when SwingUtilities.isEventDispatchThread() is called from an rmi thread becuase AppContext.getAppContext() is returning null. java.lang.NullPointerException at sun.awt.SunToolkit.getSystemEventQueueImplPP(Unknown Source) at sun.awt.SunToolkit.getSystemEventQueueImplPP(Unknown Source) at sun.awt.SunToolkit.getSystemEventQueueImpl(Unknown Source) at java.awt.Toolkit.getEventQueue(Unknown Source) at java.awt.EventQueue.isDispatchThread(Unknown Source) at javax.swing.SwingUtilities

I've try code below... @Grapes([ @Grab('org.hsqldb:hsqldb:2.0.0'), @GrabConfig(systemClassLoader=true, initContextClassLoader=true) ]) import groovy.sql.Sql println Class.forName('org.hsqldb.jdbc.JDBCDriver').newInstance() It works in groovyConsole, but failed to run with Web Start. Following are error messages. startup failed: General error during conversion: No suitable ClassLoader found for grab java.lang.RuntimeException: No suitable ClassLoader found for grab at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance

We began to notice that with Java 7 (particularly with update 4), that all our users began to see this with our Webstart app: [14:42:58,422] AWT-EventQueue-0(DEBUG) java.lang.SecurityException: class "CLASSNAME" does not match trust level of other classes in the same package [14:42:58,422] AWT-EventQueue-0(DEBUG) at com.sun.deploy.security.CPCallbackHandler$ChildElement.checkResource(Unknown Source) [14:42:58,422] AWT-EventQueue-0(DEBUG) at com.sun.deploy.security.DeployURLClassPath$JarLoader.checkResource(Unknown Source) [14:42:58,422] AWT-EventQueue-0(DEBUG) at com.sun.deploy.security