Phex,JCRPG, and Rails dont work, java issue?

Okay, so I’ve installed Phex, jcrpg, and rails using yast. I’ve also had Vuze(Azureus) on here recently, and it didn’t have a java issue. However, those other three programs use java, and they attempt to start, but fail. So I thought that was the case, and I’ve updated java runtime in yast, and I’ve also tried downloading the rpm.bin file from sun and installing it in console… Anyone got any ideas?:\