实验11：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.类图

2.源代码

 

package test11;

public abstract class Phone {
    public void serviceCall() {

    }
}

package test11;


public class ComplexPhone extends PhoneDecoration {
    public ComplexPhone(Phone phone) {
        super(phone);
    }

    @Override
    public void serviceCall() {
        super.serviceCall();
        System.out.println("ComplexPhone：发出声音、震动并灯光闪烁提醒主人电话来了");
    }
}

package test11;

public class PhoneDecoration extends Phone {
    private Phone phone = null;

    public PhoneDecoration(Phone phone) {
        if (phone != null) {
            this.phone = phone;
        } else {
            this.phone = new SimplePhone();
        }
    }

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

package test11;

public class Client {

    public static void main(String[] args) {

        Phone p1 = new SimplePhone();
        System.out.println("生产简单手机");
        p1.serviceCall();

        System.out.println("***********************");
        Phone p2 = new JarPhone(p1);
        System.out.println("升级为JarPhone手机");
        p2.serviceCall();
        System.out.println("***********************");

        Phone p3 = new ComplexPhone(p2);
        System.out.println("升级为ComplexPhone手机");
        p3.serviceCall();
    }
}

package test11;

public class JarPhone extends PhoneDecoration {
    public JarPhone(Phone phone) {
        super(phone);
    }

    @Override
    public void serviceCall() {
        super.serviceCall();
        System.out.println("JarPhone：发出声音并震动提醒主人电话来了");
    }
}

package test11;

public class SimplePhone extends Phone {

    public void serviceCall() {
        System.out.println("SimplePhone：发出声音提醒主人电话来了");
    }
}

 

3.代码运行结果