"Editable" checkbox is not worked properly from JTreeTest application.

Test bundles : j2sdk-1_4_0-beta_refresh-bin-b69-solsparc-20_jun_2001.sh
Tested environment: ko / os2.9_b38 (64bit) /sun4u
Tested GlobalSuite : gs12-b04.zip

When a tester deselects "Editable" checkbox from Tree menu, the tester still can modify the Tree such as adding or removing a TreeNode. But, since "Editable" is unchecked, Tree cannot be modified.

How To reproduce:

1) run GlobalSuite/test/font-render/swing/three/JTreeTest.java
2) deselected ""Editable" checkbox from Tree menu
3) try to remove (or insert) child node from Tree menu
4) then the child node is removed and there is "treeNodesRemoved!! ... "
    message displayed.