import java.applet.*;
import java.awt.*;

public class button extends Applet

{
  public void init()
	{
	  add(new Button("Red"));
	  add(new Button("White"));
	  add(new Button("Blue"));
	  add(new Label("Hit a Button to change the screen color"));
	}
  public boolean action(Event evt, Object whatAction)
	{
	  if (!(evt.target instanceof Button))
		{
		 return false;
		}
	  	String buttonLabel = (String) whatAction;	
	   	if (buttonLabel=="Red") setBackground(Color.red);
	  	if (buttonLabel=="White") setBackground(Color.white);
	  	if (buttonLabel=="Blue") setBackground(Color.blue);
	  	repaint();
		return true;
	}

}