Java uses X11's System cut buffer instead of the primary cut buffer like everything else in X. (Or vice versa, I forget which is which.)

XClipboard is one of the few apps that looks at all 3 X11 cut buffers.

Note, under JVM 1.2.2, occasionlly the JVM will dump core if you leave xclipboard up too long and attempt a new copy. JVM 1.3 doesn't do this. This can make JBuilder suddenly hang when you hit ^C to copy. The JVM is writing out a 200meg core file. Give it a few minutes and the window will close, and you can re-open JBuilder.

Moral of the story: If you're using JB Foundation 3.0 or JB 3.5, don't leave xclipboard running any longer than you need to, and safe often while it's running. This is a JVM 1.2.2 bug.

2000-Dec-21 4:14pm gyles19@visi.com

  (global-set-key "\M-\C-y" 'clipboard-yank) ; a yank that gets JBuilder's clipboard
  (global-set-key "\M-\C-w" 'clipboard-kill-ring-save) ; keep to JBuilder's clipboard
  ; M-C-w is, by default, the "append-next-kill" command .. but I've never used it.

you can use M-C-y to paste the JBuilder cut buffer and M-C-w to save to it (the way M-w does to the normal selection).
You will need to run "M-x eval-buffer" or restart emacs for the changes to take effect.
2001-Sep-10 5:00am mca-jbuilderfom@grantadesign.com