I'm also trying Ruby on Mac OS X and I can't run any java simulations. Always throws a Bad Version number in .class file exception. I think I have the JDK, but

I'm also trying Ruby on Mac OS X and I can't run any java simulations. Always throws a Bad Version number in .class file exception. I think I have the JDK, but anyway the most recent version on the Sun's website is not available for Mac OS X...