Summary
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The problem was found on the Solaris 8 Beta 9/00.

After I load and run the applet on http://192.9.48.9/products/plugin/1.2/demos/Clock/example1.html

there is NullPointerException in Java Plugin of Soalris 8 Beta 9/00 when pressing the "Back" button.

Deatil Description
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The following is the message from the Java Plugin Console:

Java(TM) Plug-in: Version 1.2.2_02 Oct-11-1999
Using JRE version 1.2.2
User home directory =
Proxy Configuration: Manual Configuration
     Proxy: http=webcache.singapore:8080;ftp=webcache.singapore:8080
     Proxy Overrides:

JAR cache enabled.
Opening http://192.9.48.9/products/plugin/1.2/demos/Clock/Clock2.class proxy=webcache.singapore:8080
CacheHandler file name: /.netscape/cache/0A/cache396AAECA03E02B2.class


java.lang.NullPointerException
at sun.plugin.AppletViewer.onPrivateClose(AppletViewer.java:435)
at sun.plugin.AppletViewer$1.run(AppletViewer.java:399)
at java.lang.Thread.run(Thread.java:479)

Comment
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There is possible problem in Java Plugin 1.2.2-02 that it will run the finalize() twice. Therefore it cause the NullPointer Exception.

In the Solaris 8, it should use the Java Plugin 1.2.2-05. This version has fixed this problem.