import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;


class BulbSwitch implements ActionListener {
	private Lightbulb bulb;
	
	public BulbSwitch(Lightbulb bulb) {
		this.bulb = bulb;
	}
	
	public void actionPerformed(ActionEvent e) {
		bulb.flip();
	}
	
}