如何以不同的方法从子类关闭 JFrame？

Question

I have a button in my GUI that is supposed to close its window. However, its event handler is located in an AbstractAction subclass that is located in a seperate method from the JFrame . Because of this I cannot see a way to tell the JFrame to close from my AbstractAction .

Heres the basic layout of my code:

public PointWindow()
  {
    initialize();
  }

  public void initialize()
  {
    JFrame frame = new JFrame();
    // JFrame stuff
    frame.setContentPane(createGUI());
    frame.setVisible(true);
  }

  public JPanel createGUI()
  {
    JPanel gui = new JPanel();

    // Code....

    class MakeGraphACT extends AbstractAction 
    {
      public void actionPerformed(ActionEvent e)
      {
        frame.setVisible(false);  // <--- How to get this to work?
        frame.dispose();          // <---
        new GraphWindow(pointList);
      }
    }

    //Code...

    return gui;
  }

Have I done a bad job planning my code or am I just missing something obvious?

Answer 1

You need to pass the frame as a final parameter to the createGUI() method.
You will then be able to access it from within the inner class.