managing parent frame from child frame on java swing

Question

I have a jframe (parent) which creates an input frame (child) where I get some parameter.

In the "child" frame I have "ok" and "cancel" buttons.

When "ok" button is pressed, the parent frame needs to be updated with new data.

What is the best way to do that??

Answer 1

As of Java 1.3

public class MyPanel extends JPanel
{

  public MyPanel() {

    ....

    JButton cancelButton = new JButton("Cancel");
    cancelButton.addActionListener(
      new ActionListener() {
        public void actionPerformed(ActionEvent e) {
          // <<<< HERE'S THE INTERESTING BIT >>>>
          javax.swing.SwingUtilities.getWindowAncestor(MyPanel.this).dispose();
        }
      }
    );
    add(cancelButton);

    .....

  }

}