package headfirst.facade.hometheater;public class Amplifier {	String description;	Tuner tuner;	DvdPlayer dvd;	CdPlayer cd;		public Amplifier(String description) {		this.description = description;	} 	public void on() {		System.out.println(description + " on");	} 	public void off() {		System.out.println(description + " off");	} 	public void setStereoSound() {		System.out.println(description + " stereo mode on");	} 	public void setSurroundSound() {		System.out.println(description + " surround sound on (5 speakers, 1 subwoofer)");	} 	public void setVolume(int level) {		System.out.println(description + " setting volume to " + level);	}	public void setTuner(Tuner tuner) {		System.out.println(description + " setting tuner to " + dvd);		this.tuner = tuner;	}  	public void setDvd(DvdPlayer dvd) {		System.out.println(description + " setting DVD player to " + dvd);		this.dvd = dvd;	} 	public void setCd(CdPlayer cd) {		System.out.println(description + " setting CD player to " + cd);		this.cd = cd;	} 	public String toString() {		return description;	}}