import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class ShowResize {

  public static void main(String[] args){

    JFrame frame = new JFrame();

    frame.setTitle("Resize Me!");
    frame.setSize(200,200);
    frame.show();
    
    Container pane = frame.getContentPane();

    int height = pane.getHeight();
    int width = pane.getWidth();

    String s = "Size: " + width + " x " + height;

    Label l = new Label(s,Label.CENTER);
    l.setFont(new Font("Sansserif",Font.PLAIN,24));
    pane.add(l,0);
    frame.show();

    pane.addComponentListener(new myComponentAdapter());

    frame.addWindowListener(new myWindowAdapter());
  }
}

class myWindowAdapter extends WindowAdapter{

  public void windowClosing(WindowEvent e){System.exit(0);}
  
}

class myComponentAdapter extends ComponentAdapter{

  public void componentResized(ComponentEvent e){

    Container c = (Container) e.getComponent();
    int height = c.getHeight();
    int width = c.getWidth();

    String s = "Size: " + width + " x " + height;

    Label l = new Label(s,Label.CENTER);
    l.setFont(new Font("Sansserif",Font.PLAIN,24));
    c.add(l,0);

  }

}