门面模式
转：http://daimajishu.iteye.com/blog/1085017
一、门面模式说明：
门面模式的特点是：客户端不直接访问系统内部一些复杂的内部类，而通过访问门面来达到操控这些类的目的。门面模式与这些类之间存在聚合关系。可以用如下结构图描述：
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package com.solid.pattern;
/**
* 门面模式
* @author solid
*/
public class Facade {
private Ring ring;
private Clarm clarm;
private Light light;
public Facade(Ring ring, Clarm clarm, Light light) {
this.ring = ring;
this.clarm = clarm;
this.light = light;
}
public void open() {
light.turnOn();
ring.turnOn();
clarm.turnOn();
}
public void close() {
light.turnOff();
ring.turnOff();
clarm.turnOff();
}
}
package com.solid.pattern;
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public class Light {
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public void turnOn() {
System.out.println("===light turnOn===");
}
public void turnOff() {
System.out.println("===light turnOff===");
}
}
package com.solid.pattern;
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public class Ring {
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public void turnOn() {
System.out.println("===ring turnOn===");
}
public void turnOff() {
System.out.println("===ring turnOff===");
}
}
package com.solid.pattern;
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public class Clarm {
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public void turnOn() {
System.out.println("===clarm turnOn===");
}
public void turnOff() {
System.out.println("===clarm turnOff===");
}
}
package com.solid.pattern;
/**
* 门面模式测试方法
* @author solid
*/
public class TestFacade {
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private static Ring ring;
private static Light light;
private static Clarm clarm;
public static void main(String[] args) {
ring = new Ring();
light = new Light();
clarm = new Clarm();
Facade facade = new Facade(ring, clarm, light);
facade.open();
facade.close();
}
}