I've kept meaning to look up how to change case in Netbeans since my guess at Ctrl+U and Ctrl+L didn't work. So I did:
Change selection to Uppercase:Ctrl+U UChange selection to Lowercase:Ctrl_U LTo invert the case of the current selection:Ctrl+U S
Thanks to Netbeans 6 for that. It is also in the manual if you're the kind of person that reads manuals