How do I change the JBuilder Look and Feel?

Go to Tools | Preferences, and then when the resulting Preferences dialog shows up, choose Browser in the tree on the left hand side of the dialog, then Look & Feel. In the Look & Feel combo box on the right you can choose from the following options:

1. Borland
2. CDE/Motif
3. Metal
4. Windows

I recently switched to the Borland Look and Feel because with the default Windows Look and Feel it was hard to tell which class was open in the Editor when I had a large number of files open at one time.