Tried out the latest jet-main build today:
And, guess what, Ctrl-Alt-V provides access to multiple clipboards, very useful:
Note that this is not in NetBeans IDE 7.2, but in very recent builds for the next version of NetBeans IDE. When any of the numbers in the clipboard history is pressed on the keyboard, the related text in the clipboard is inserted at the cursor. Alternatively, scroll up and down with the arrow keys.