Double check your Classpath. Make sure that you have the Java JRE files located there. This is usually the case in ANY java application. If you are using bash, just type env. If you should see a classpath variable, if you don't, you can create it by running set classpath=path/to/JRE/files. You may want to add it to your profile as well, so it is set on login

Kevin
kevin@mayday-anime.com