A java exception has occurred

[franz1darelle]

I downloaded a physics engine but then i got thie error when i try to run the jar file: a java exception has occured..any help will be deeply appreciated.

 

[ksiemb]

I downloaded a physics engine but then i got thie error when i try to run the jar file: a java exception has occured..any help will be deeply appreciated.

I would start with asking Java Support:

http://www.java.com/en/download/help/index.xml