标签：
今天讲下设计模式中的装饰设计模式,这个在我门的IO流已经使用到了,首先看下对装饰设计模式的定义
定义：
public interface Phone {
public void call();
}具体某个电话的实现类public class IPhone implements Phone {
public IPhone() {
super();
}
@Override
public void call() {
System.out.println("打电话");
}
}
public abstract class PhoneDecorator implements Phone {
private Phone phone;
public PhoneDecorator(Phone phone) {
super();
this.phone = phone;
}
@Override
public void call() {
phone.call();
}
}//彩铃具体装饰类的实现,并添加功能public class RingDecorator extends PhoneDecorator {
public RingDecorator(Phone phone) {
super(phone);
}
@Override
public void call() {
System.out.println("我要手机可以听彩铃");
super.call();
}
}//音乐具体装饰类的实现 并添加播放音乐的功能public class MusicDecorate extends PhoneDecorator {
public MusicDecorate(Phone phone) {
super(phone);
}
@Override
public void call() {
super.call();
System.out.println("手机可以听音乐");
}
}测试类public class DecoratorTest {
public static void main(String[] args) {
Phone phone = new IPhone();
phone.call();
System.out.println("*************************");
PhoneDecorator pd = new RingDecorator(phone);
pd.call();
System.out.println("*************************");
pd = new MusicDecorate(phone);
pd.call();
System.out.println("*************************");
//现在是打电话之前有彩铃来了 挂断电话后可以听因为
pd = new MusicDecorate(new RingDecorator(phone));
pd.call();
}
}结果：标签：
原文地址：http://blog.csdn.net/coderinchina/article/details/42032167
