import java.awt.*;
import java.awt.event.*;

public class FuncMouseApp extends Frame
{
	public static void main(String[] args)
	{
		FuncMouseApp m = new FuncMouseApp();
	}

	public FuncMouseApp()
	{
		Button b = new Button();
		b.addMouseListener(new MouseAdapter()
							   {
								   public void mousePressed(MouseEvent event)
								   {
									   Button b = (Button) event.getSource();
									   b.setBackground (Color.blue);
								   }
							    }
						  );
		setSize(100,100);
		add(b);
		setVisible(true);
	}
}