Demonstrating the ContainerListener

import java.awt.Component;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ContainerEvent;
import java.awt.event.ContainerListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class ContainerTest {
  public static void main(String args[]) {
    JFrame frame = new JFrame();
    Container contentPane = frame.getContentPane();

    ContainerListener cont = new ContainerListener() {
      ActionListener listener = new ActionListener() {
        public void actionPerformed(ActionEvent e) {
          System.out.println("Selected: " + e.getActionCommand());
        }
      };

      public void componentAdded(ContainerEvent e) {
        Component c = e.getChild();
        if (c instanceof JButton) {
          JButton b = (JButton) c;
          b.addActionListener(listener);
        }
      }

      public void componentRemoved(ContainerEvent e) {
        Component c = e.getChild();
        if (c instanceof JButton) {
          JButton b = (JButton) c;
          b.removeActionListener(listener);
        }
      }
    };

    contentPane.addContainerListener(cont);

    contentPane.setLayout(new GridLayout(3, 2));
    contentPane.add(new JButton("First"));
    contentPane.add(new JButton("Second"));
    contentPane.add(new JButton("Third"));
    contentPane.add(new JButton("Fourth"));
    contentPane.add(new JButton("Fifth"));

    frame.setSize(300, 200);
    frame.show();
  }
}

1.	Demonstrating the WindowListener with a WindowAdapter
2.	Demonstrating the ActionListener
3.	Demonstrating the AdjustmentListener
4.	Demonstrating the AncestorListener
5.	Demonstrating the ComponentListener
6.	Demonstrating the FocusListener
7.	Demonstrating the HyperlinkListener
8.	Demonstrating the InternalFrameListener
9.	Demonstrating the ItemListener
10.	Demonstrating the KeyListener
11.	Demonstrating the MenuListener
12.	Demonstrating the MouseListener and MouseMotionListener
13.	Demonstrating the MouseWheelListener
14.	Demonstrating the PopupMenuListener
15.	Demonstrating the WindowListener
16.	Responding to Keystrokes

Demonstrating the ContainerListener : Various Event Listener « Swing JFC « Java

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