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Rubik's Cube switch between branches

 
Greenhorn
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Hi Everyone!

Could you help me a little?

I try to build a Rubik's Cube. Now I have 2 branches 1 for horizontal and 1 for vertical rotation. Is it possible to switch between them? I tried it but I get a nullpointerexception..

Please somebody help me!

the code is the following:


Thank you in advance!

Best wishes!
 
Rancher
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Welcome to JavaRanch.

Post the full exception stack trace. Also tell us in which line of code it happens, and which object is null.
 
Zoltan Molnar
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Ulf Dittmer wrote:Welcome to JavaRanch.

Post the full exception stack trace. Also tell us in which line of code it happens, and which object is null.



Hi! I appreciate your greeting!

So, could you tell me what is exception track trace?

I tried to modify like this:



And it has a problem with this method:


But then it throws an exception:

Exception in thread "main" java.lang.NullPointerException
at elte.java2_utikalauz5.java3d.RasterDemo.enablePicking(RasterDemo.java:539)
at elte.java2_utikalauz5.java3d.RasterDemo.enablePicking(RasterDemo.java:549)
at elte.java2_utikalauz5.java3d.RasterDemo.enablePicking(RasterDemo.java:549)
at elte.java2_utikalauz5.java3d.RasterDemo.enablePicking(RasterDemo.java:549)
at elte.java2_utikalauz5.java3d.RasterDemo.createSceneGraphVertical(RasterDemo.java:531)
at elte.java2_utikalauz5.java3d.RasterDemo.<init>(RasterDemo.java:76)
at elte.java2_utikalauz5.java3d.RasterDemo.main(RasterDemo.java:60)

Or am I think it too complicated? Is there easier method?

Thank you for your help in advance!

Best wishes!
 
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