import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseAdapter;
import javax.swing.JFrame;

public class MultipleFrames
{	public static void main(String[] args)
    {
		// Create the first Frame window
		MyFrame f = new MyFrame();
		f.show();
	} // end of main()
}

class MyFrame extends JFrame
{	public MyFrame()
	{	numWindows++;
		windowCount++;

		// Add window closer listener
		addWindowListener(new WindowCloser());

		// Set title
		this.setTitle("Window #"+windowCount);
		this.setSize(200,200);

		// Add mouse listener
		MouseSpy listener = new MouseSpy();
		addMouseListener(listener);
	}


	private class MouseSpy extends MouseAdapter
	{	public void mouseClicked(MouseEvent event)
		{	System.out.println("Mouse clicked!");
			// Open up a new frame window
			MyFrame f = new MyFrame();
			f.show();
		}
	}

	private class WindowCloser extends WindowAdapter
	{	public void windowClosing(WindowEvent event)
		{	numWindows--;
			System.out.println("There are "+numWindows+" still open!");
			if (numWindows == 0)
				System.exit(0);
		}
	}

	static int numWindows = 0;
	static int windowCount = 0;
} // end of class