Calling JTree from another class

Question

I'm having trouble making a JMenuItem in one class pull up a JTree from another class that would act as a Help menu for a program I'm making. The main problem I'm having is calling the JTree from the one class through an ActionListener in the JMenuItem's class.

Here's the code from the JMenuItem's class that I'm talking about:

/*pulls up help menu*/
JMenuItem item1 = new JMenuItem("Help Menu");
myMenu.add(item1);
item1.addActionListener(new ActionListener(){
     public void actionPerformed(ActionEvent event){
     **if(item1.isEnabled()){
        sjt = new SampleJTree();
     }**
 }
});

As I stated before, I'm not sure how to bring a JTree via the bold section (i.e. I don't know what to put in the if statement check). Any direction to the solution would be much appreciated.

You may need to provide quite a bit more information to make this question answerable. — Hovercraft Full Of Eels, Mar 16 '12 at 22:32

score 2 · Accepted Answer · edited May 23 '17 at 11:48

2

The tutorial article How to Use Trees includes examples that show how to construct a JTree and make it visible. This example shows how to search a tree for a matching string and make the corresponding node visible.

Addendum: For reference, How to Use Actions offers a useful way to encapsulate the ActionListener.

edited May 23 '17 at 11:48

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answered Mar 16 '12 at 22:32

trashgod

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Calling JTree from another class

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