Java library error: Help Needed.

[MirJafar Ali]

Hello,

When I try to compile some java code, I get the following error message. I
don't know Java, so can
someone tell which software I must download from Ubuntu repository to get
rid of this error ?

Thanks.
Mir.

@mumble-23:~/Downloads/walrus-0.6.3$ java -cp
mp.jar:antlrall-mod.jar:libsea.jar:walrus.jar H3Main
Exception in thread "main" java.lang.NoClassDefFoundError:
javax/media/j3d/Canvas3D
Caused by: java.lang.ClassNotFoundException: javax.media.j3d.Canvas3D
        at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:264)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332)
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