Oracle Forms

I found the following error in java console log while run the fileupload demo using oracle from 6i. i surf almost a week to find out solution with in this forums and use other search but i do not found the way to solve the problem.
kindly help me out.

please note my configurations :

Opening http://masadiq.ntserver.khi:8000/forms60java/f60all_jinit.jar no proxy

Loading http://masadiq.ntserver.khi:8000/forms60java/f60all_jinit.jar from JAR cache.

Opening http://masadiq.ntserver.khi:8000/forms60java/CalendarWidget.jar no proxy

Loading http://masadiq.ntserver.khi:8000/forms60java/CalendarWidget.jar from JAR cache.

Opening http://masadiq.ntserver.khi:8000/forms60java/uploadclient.jar.sig no proxy

Storing http://masadiq.ntserver.khi:8000/forms60java/uploadclient.jar.sig in JAR cache.

java.io.EOFException: Unexpected end of ZLIB input stream
at java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:156)

at java.util.zip.InflaterInputStream.read(Compiled Code)

at java.util.zip.ZipInputStream.read(ZipInputStream.java:104)

at sun.tools.jar.JarVerifierStream.read(JarVerifierStream.java:206)

at sun.applet.AppletResourceLoader.loadJar(Compiled Code)

at sun.applet.AppletResourceLoader.loadJar(AppletResourceLoader.java:223)

at sun.applet.JinitAppletPanel.loadJarFiles(Compiled Code)

at sun.plugin.AppletViewer.loadJarFiles(Compiled Code)

at sun.applet.JinitAppletPanel.runLoader(JinitAppletPanel.java:580)

at sun.applet.JinitAppletPanel.run(Compiled Code)

at java.lang.Thread.run(Thread.java:466)


I have been used jdk1.2.2 and j2sdk1.4.2_05 as a JVM with proper classpath as defined in the fileupload.htm. i did recompiled all java codes and paste UploadClient.jar,UploadServer.jar and jar.sig files in C:\oracle\dev6i\FORMS60\java and also paste all revelent class file into C:\oracle\dev6i\FORMS60\java\oracle\forms\demos and update envornment variables.

Regards,

Asif