装饰模式

[实验任务一]：手机功能的升级
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。

1.提交类图；

2.提交源代码

Changer.java
package ornament;

public class Changer extends Phone{
    private Phone phone;
    public Changer(Phone phone) {
        this.phone=phone;
    }

    @Override
    public void voice() {
        phone.voice();
    }

}
Client.java
package ornament;
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();
    }
}


ComolexPhone.java
package ornament;

public class ComplexPhone extends Changer{

    public ComplexPhone(Phone phone) {
        super(phone);
        System.out.println("变成高级手机");
    }
    public void flash(){
        System.out.println("手机来电闪烁");
    }
}

JarPhone.java
package ornament;
public final class JarPhone extends Changer{

    public JarPhone(Phone phone) {
        super(phone);
        System.out.println("增加震动功能");
    }

    public void voice() {
        super.voice();
        System.out.println("来电震动");
    }
}


Phone.java
package ornament;

public abstract class Phone{

    public abstract void voice();
}

SimplePhone.java
package ornament;

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("手机来电发出声音！");
    }
}