How To Disable JTree Collapse Event

Disabling the collapse event of the JTree is possible by adding a listener to it. There may be times where you want your JTree to be always in expanded mode hence disabling its collapse event is the only way to go.

Add a TreeWillExpandListener to the JTree, make the treeWillCollapse() method throw ExpandVetoException and that should do it.

Related Posts Plugin for WordPress, Blogger...
  • Scrabble Fan

    Thanks a lot for the code to disable this. I was struggling to get it right.