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Please take a look at the following Java applet:

http://www1.chapman.edu/~jipsen/gap/po4.html

It is supposed to show some mathematical stuff with vertices and edges. The only thing I see is unfortunately one yellow dot.

What might be the reason for this?

Please tell me if you need more information.

share|improve this question

In Windows with Sun Java 6 it works fine. In Ubuntu Natty with IcedTea (OpenJDK) it doesn't. It could well be down to the version of Java you have installed - try replacing OpenJDK with Sun's Java version.

To get Sun's Java you will need to make sure the Partner repository is enabled in Software Sources.

share|improve this answer
    
Thanks! I've changed to Sun and it works. – Rasmus Oct 25 '10 at 15:48
    
Well Im using OpenJRE and it is working fine. – Curious Apprentice May 6 '12 at 10:39
    
Two years can make a lot of difference. :) – Jonathon Jun 9 '12 at 14:06

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