package headfirst.facade.hometheater;public class CdPlayer {	String description;	int currentTrack;	Amplifier amplifier;	String title;		public CdPlayer(String description, Amplifier amplifier) {		this.description = description;		this.amplifier = amplifier;	} 	public void on() {		System.out.println(description + " on");	} 	public void off() {		System.out.println(description + " off");	}	public void eject() {		title = null;		System.out.println(description + " eject");	} 	public void play(String title) {		this.title = title;		currentTrack = 0;		System.out.println(description + " playing \"" + title + "\"");	}	public void play(int track) {		if (title == null) {			System.out.println(description + " can't play track " + currentTrack + 					", no cd inserted");		} else {			currentTrack = track;			System.out.println(description + " playing track " + currentTrack);		}	}	public void stop() {		currentTrack = 0;		System.out.println(description + " stopped");	} 	public void pause() {		System.out.println(description + " paused \"" + title + "\"");	} 	public String toString() {		return description;	}}