Hi, the ranch has a forum a little ways down for IDE's, Version Control, other tools. I don't know JBuilder at all, so I don't know how you might get tied to the tool. Once you have plain old Java source you should be able to drop it into a project in any IDE.
A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of the idea. John Ciardi