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Menu Problems

 
Greenhorn
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Hi, I am working on a simple menu and running into a bit of difficulty. I have the menu created and it works well except for one issue, I cannot get the greying out of options to work. Specifically, when I select EDIT / OPTIONS / READ ONLY it should grey out the save/saveas options but instead I get a null pointer exception error. Your advice would be much appreciated. Thanks
Now for the code......
 
Ranch Hand
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I draw your attention to these lines of code.
private Action saveAction;
private Action saveAsAction;
....
// set up Save menu item
JMenuItem saveItem = fileMenu.add(new TestAction( "Save" ));
// set up Save As menu item
JMenuItem saveAsItem = fileMenu.add(new TestAction( "Save As" ));
...
saveAction.setEnabled(!readOnlyItem.isSelected());
saveAsAction.setEnabled(!readOnlyItem.isSelected());
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