装饰模式实现

用装饰模式模拟手机功能的升级过程：简单的手机(SimplePhone)在接收来电时，会发出声音提醒主人；而JarPhone除了声音还能振动；更高级的手机(ComplexPhone)除了声音、振动外，还有灯光闪烁提示。

类图：

 

 源码：

1. 提交源代码；

package simplePhone;

/**

 * 抽象手机构件类：抽象构件类

 * @author 9986

 *

 */

public abstract class Phone {

public abstract void voice();

}

 

package simplePhone;

/**

 * 简单手机类：具体构件类

 * @author 9986

 *

 */

public class SimplePhone extends Phone{

 

public SimplePhone() {

System.out.println("这是一部简单手机");

}

 

@Override

public void voice() {

System.out.println("手机来电声音");

}

 

}

 

package simplePhone;

/**

 * 构件装饰类：抽象装饰类

 * @author 9986

 *

 */

public class Changer extends Phone{

private Phone phone;

public Changer(Phone phone) {

this.phone=phone;

}

 

@Override

public void voice() {

phone.voice();

}

 

}

 

package simplePhone;

/**

 * Complex手机类：具体装饰类

 * @author 9986

 *

 */

public class ComplexPhone extends Changer{

 

public ComplexPhone(Phone phone) {

super(phone);

System.out.println("变成高级手机");

flash();

}

 

public void flash() {

System.out.println("手机来电闪烁灯光提示");

}

 

}

 

package simplePhone;

/**

 * Jar手机类：具体装饰类

 * @author 9986

 *

 */

public final class JarPhone extends Changer{

 

public JarPhone(Phone phone) {

super(phone);

System.out.println("手机增加震动功能");

}

 

public void voice() {

super.voice();

System.out.println("来电震动");

}

}

 

package simplePhone;

/**

 * 客户端测试类

 * @author 9986

 *

 */

public class Client {

public static void main(String[] args) {

//父类调用子类方法

Phone p1=new SimplePhone();

p1.voice();

System.out.println("====================");

Phone p2=new JarPhone(p1);

p2.voice();

System.out.println("====================");

Phone p3=new ComplexPhone(p2);

p3.voice();

}

}