Thanks, Cudabean.

I actually meant the IDE for writing Java applications. As far as I know there are quite a few ones: JBuilder, Visual Cafe, Forte for Java, PowerJ, CodeWarrior ...

I used to work with JBuilder 3 Standard, but it wasn't too convenient. Might be in the latest versions the Borland improved it.
So from all those Integrated Development Environment programs should be some more convenient and relaible than the others.