Access a class object from its inner class

Question

This method is inside JFrame object, how can I pass that JFrame object as an argument to the method in its inner class?? My code is: The comment explains what I am interested to do:

public void runTime(){        
        ActionListener action = new ActionListener(){
            public void actionPerformed(ActionEvent e){
                count++;                
                text.setText(new Integer(count).toString());
                while (count==2012){
                    //I want to pass the frame that holds this rather than null, how it is possible?
                    JOptionPane.showMessageDialog(null, "HelloEnd", "End of World", JOptionPane.INFORMATION_MESSAGE, new ImageIcon("explode.jpg"));
                    break;
                }
            }
        };
        tr = new Timer(1000,action);
        tr.start();
    }

possible duplicate of [How do you get a reference to the enclosing class from an anonymous inner class in Java?](http://stackoverflow.com/questions/31201/how-do-you-get-a-reference-to-the-enclosing-class-from-an-anonymous-inner-class-i) — Riduidel, Jan 26 '11 at 09:52

score 4 · Accepted Answer · edited May 23 '17 at 11:55

4

Hopefully, this question wasn't answered before. Anyway, try

 JOptionPane.showMessageDialog(JFrame.this, "HelloEnd", "End of World", JOptionPane.INFORMATION_MESSAGE, new ImageIcon("explode.jpg"));

edited May 23 '17 at 11:55

Community

1
1

answered Jan 26 '11 at 09:53

Riduidel

22,052
14
85
185

score 1 · Answer 2 · answered Jan 26 '11 at 09:53

1

You can use OuterClassName.this.

answered Jan 26 '11 at 09:53

Kel

7,680
3
29
39

Actually, I have fell in this problem before. The context of the problem was same, I had to access the reference to enclosing class from the inner class. Thank you for you answer. It's great, solved my problem. – zdcobran Jan 26 '11 at 10:06

score 0 · Answer 3 · answered Jan 26 '11 at 09:51

0

AFAIK, if your method is not static, you can use this and super keywords. Here's some tutorial. E.g.:

JOptionPane.showMessageDialog(this, "HelloEnd", "End of World", JOptionPane.INFORMATION_MESSAGE, new ImageIcon("explode.jpg"));

answered Jan 26 '11 at 09:51

shybovycha

11,556
6
52
82

If I use the this keyword, then this represents the action object in my code (from ActionListener class), but I want to make the parent component from outerclass. – zdcobran Jan 26 '11 at 10:01

Access a class object from its inner class

3 Answers3