图解Java设计模式之外观模式

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package com.example.demo.facade;

public class TheaterLight {
	
	private static TheaterLight instanceLight = new TheaterLight();
	
	public static TheaterLight geTheaterLight() {
		return instanceLight;
	}

	public void on() {
		System.out.println(" TheaterLight on ");
	}
	
	public void off() {
		System.out.println(" TheaterLight off ");
	}
	
	public void dim() {
		System.out.println(" TheaterLight dim ");
	}
	
	public void bright() {
		System.out.println(" TheaterLight bright ");
	}
}
package com.example.demo.facade;

public class Stereo {
	
	private static Stereo instanceStereo = new Stereo();
	
	public static Stereo getStereo() {
		return instanceStereo;
	}
	
	public void on() {
		System.out.println(" Stereo on ");
	}
	
	public void off() {
		System.out.println(" Stereo off ");
	}
	
	public void up() {
		System.out.println(" Screen up .. ");
	}

}
package com.example.demo.facade;

public class Screen {

	private static Screen instanceScreen = new Screen();
	
	public static Screen getInstance() {
		return instanceScreen;
	}
	
	public void up() {
		System.out.println(" Screen up ");
	}
	
	public void down() {
		System.out.println(" Screen down ");
	}
	
}
package com.example.demo.facade;

public class Projector {

	private static Projector instanceProjector = new Projector();
	
	public static Projector getInstance() {
		return instanceProjector;
	}
	
	public void on() {
		System.out.println(" Projector on ");
	}
	
	public void off() {
		System.out.println(" Projector ff ");
	}
	
	public void focus() {
		System.out.println(" Projector is focus ");
	}
}
package com.example.demo.facade;

public class Popcorn {
	
	private static Popcorn instencePopcorn = new Popcorn();
	
	public static Popcorn getInPopcorn() {
		return instencePopcorn;
	}

	public void on() {
		System.out.println(" popcorn on ");
	}
	
	public void off() {
		System.out.println(" popcorn ff ");
	}
	
	public void pop() {
		System.out.println(" popcorn is poping ");
	}
}
package com.example.demo.facade;

public class DVDPlayer {

	private static DVDPlayer instanceDvdPlayer = new DVDPlayer();
	
	public static DVDPlayer getInstance() {
		return instanceDvdPlayer;
	}
	
	public void on() {
		System.out.println(" dvd on ");
	}
	
	public void off() {
		System.out.println(" dvd off ");
	}
	
	public void play() {
		System.out.println(" dvd is playing ");
	}
}
package com.example.demo.facade;

public class HomeTheaterFacade {

	private TheaterLight theaterLight;
	private Popcorn popcorn;
	private Stereo stereo;
	private Projector projector;
	private Screen screen;
	private DVDPlayer dvdPlayer;
	
	public HomeTheaterFacade() {
		this.theaterLight = TheaterLight.geTheaterLight();
		this.dvdPlayer = DVDPlayer.getInstance();
		this.popcorn = Popcorn.getInPopcorn();
		this.projector = Projector.getInstance();
		this.screen = Screen.getInstance();
		this.stereo = Stereo.getStereo();
	}
	
	// 操作分成四部
	public void ready() {
		popcorn.on();
		popcorn.pop();
		screen.down();
		projector.on();
		stereo.on();
		dvdPlayer.on();
		theaterLight.dim();
	}
	
	public void play() {
		dvdPlayer.play();
	}
	
	public void pause() {
		dvdPlayer.play();
	}
	
	public void end() {
		popcorn.off();
		theaterLight.bright();
		screen.up();
		projector.off();
		stereo.off();
		dvdPlayer.off();
	}
	
}
package com.example.demo.facade;

public class Client {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		HomeTheaterFacade homeTheaterFacade = new HomeTheaterFacade();
		homeTheaterFacade.ready();
		homeTheaterFacade.play();
	}

}