With latest nightly bundles(dated apr 14) regression in behavior of applets has been noticed when browser/page is refreshed or reloaded. Following exception are getting thrown and applets fails/JRE fails to re-start on certain occasions. Bug can be reproduced with applets using or not using JNLP support
- Install JRE(bundle dated Apr-14)
- Try loading following applets. Try to refresh and reload them
Simple applets not using JNLP:
------------------------------
http://sqeweb.sfbay.sun.com/deployment2/jitu/plug-bug/ALC/JOptionPaneTest.html
http://sqeweb.sfbay.sun.com/deployment2/jitu/plug-bug/ALC/PrintThread.html
http://sqeweb.sfbay.sun.com/deployment2/jitu/plug-bug/ojiliveconnect/src/JSAppletCommunication.html

Simple applets using JNLP:
-------------------------
http://nicole1.sfbay.sun.com:8080/plugin_tests/JNLPSupport/AppletLifecycle/htmls/PrintThread1.html
http://nicole1.sfbay.sun.com:8080/plugin_tests/JNLPSupport/applets/AppletBasics/JNLPBasicS
ervice1-jnlp-applet-abs.html

If you can notice any of the following exception getting raised and applet fails to relaod then bug is reproduced
1)
java.lang.NullPointerException
at sun.plugin2.applet.JNLP2Manager.storeJarVersionMapInAppContext(Unknown Source)
at sun.plugin2.applet.JNLP2Manager.prepareLaunchFile(Unknown Source)
at sun.plugin2.applet.JNLP2Manager.loadJarFiles(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception: java.lang.NullPointerException

2)
Exception in thread "AWT-EventQueue-33" java.lang.InternalError: couldn't create component peer
at sun.awt.windows.WComponentPeer.checkCreation(Unknown Source)
at sun.awt.windows.WComponentPeer.<init>(Unknown Source)
at sun.awt.windows.WCanvasPeer.<init>(Unknown Source)
at sun.awt.windows.WPanelPeer.<init>(Unknown Source)
at sun.awt.windows.WWindowPeer.<init>(Unknown Source)
at sun.awt.windows.WFramePeer.<init>(Unknown Source)
at sun.awt.windows.WEmbeddedFramePeer.<init>(Unknown Source)
at sun.awt.windows.WToolkit.createEmbeddedFrame(Unknown Source)
at sun.awt.windows.WEmbeddedFrame.addNotify(Unknown Source)
at sun.awt.windows.WEmbeddedFrame.<init>(Unknown Source)
at sun.plugin2.main.client.PluginEmbeddedFrame.<init

3)
java.nio.channels.OverlappingFileLockException
at sun.nio.ch.FileChannelImpl$SharedFileLockTable.checkList(Unknown Source)
at sun.nio.ch.FileChannelImpl$SharedFileLockTable.add(Unknown Source)
at sun.nio.ch.FileChannelImpl.lock(Unknown Source)
at com.sun.deploy.cache.CacheEntry.lockFile(Unknown Source)
at com.sun.deploy.cache.CacheEntry.readIndexFile(Unknown Source)
at com.sun.deploy.cache.CacheEntry.access$000(Unknown Source)
at com.sun.deploy.cache.CacheEntry$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)

4)
com.sun.deploy.net.FailedDownloadException: Unable to load resource: http://nicole1.sfbay.sun.com:8080/plugin_tests/JNLPSupport/AppletLifecycle/classes/PrintThreadTest.jnlp
at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
at com.sun.deploy.net.DownloadEngine.getCachedFile(Unknown Source)
at sun.plugin2.applet.JNLP2Manager.prepareToLaunch(Unknown Source)
at sun.plugin2.applet.JNLP2Manager.initialize(Unknown Source)
at sun.plugin2.main.client.PluginMain$StartAppletRunner.run(Unknown Source

5)netscape.javascript.JSException
at sun.plugin2.main.client.MessagePassingJSObject.newJSException(Unknown Source)
at sun.plugin2.main.client.MessagePassingJSObject.waitForReply(Unknown Source)
at sun.plugin2.main.client.MessagePassingJSObject.doMemberOp(Unknown Source)
at sun.plugin2.main.client.MessagePassingJSObject.getMember(Unknown Source)
at JSAppletsComm.init(JSAppletsComm.java:31)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.InterruptedException
at java.lang.Object.wait(Native Method)
at sun.plugin2.message.Queue.waitForMessage(Unknown Source)
at sun.plugin2.message.Pipe.receive(Unknown Source)
... 6 more
basic: Applet initialized
java.lang.Exception: comp is null
at sun.plugin2.applet.Plugin2Manager.runOnEDT(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)