Just go to your c:\winnt\system32 directory and rename or delete java.exe
and javaw.exe.
Then you must add d:\jdk1.2.2\bin to your path, reboot and it should work.
Hope it helps.

Fred


> I want to learn java.
> My OS is NT 4.0 with sevice pack 4.0
> I installed jdk-1.2.2 and java3d1_1_3-win-opengl to d:\jdk1.2.2
> then I do the command
>
>     cd demo\java3d\HelloUniverse
>     java HelloUniverse
>
> it always says
>   Exception in thread "main" java.lang.NoClassDefFoundError:
>                                     javax/media/j3d/SceneGraphObject
>
> Can anyone help me?
>
>
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