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import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MulticastEvent extends JPanel implements ActionListener {
private int counter = 0;
private JButton closeAllButton;
public MulticastEvent() {
JButton newButton = new JButton("New");
add(newButton);
newButton.addActionListener(this);
closeAllButton = new JButton("Close all");
add(closeAllButton);
}
public void actionPerformed(ActionEvent evt) {
CloseFrame f = new CloseFrame();
counter++;
f.setTitle("Window " + counter);
f.setSize(200, 150);
f.setLocation(30 * counter, 30 * counter);
f.show();
closeAllButton.addActionListener(f);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setTitle("MulticastTest");
frame.setSize(300, 200);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
Container contentPane = frame.getContentPane();
contentPane.add(new MulticastEvent());
frame.show();
}
class CloseFrame extends JFrame implements ActionListener {
public void actionPerformed(ActionEvent evt) { // handles Close all
// button
setVisible(false);
}
}
}
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