【多线程】-- 04 静态代理模式

多线程

3 静态代理

这里以一个现实生活中的例子来解释并实现所谓的静态代理模式，即结婚者雇用婚庆公司来帮助自己完成整个婚礼过程：

package com.duo.lambda;interface Marry {void HappyMarry();//人生四大乐事：久旱逢甘霖；他乡遇故知；洞房花烛夜；金榜题名时
}//结婚主人公
class Protagonist implements Marry {@Overridepublic void HappyMarry() {System.out.println("Protagonist开心地结婚了");}
}//代理婚庆公司
class WeddingCompany implements Marry {private final Marry target;public WeddingCompany(Marry target) {this.target = target;}@Overridepublic void HappyMarry() {before();this.target.HappyMarry();after();}private void before() {System.out.println("在结婚之前：布置婚礼现场");}private void after() {System.out.println("在结婚之后：收取剩余尾款");}
}public class StaticProxy {public static void main(String[] args) {WeddingCompany weddingCompany = new WeddingCompany(new Protagonist());weddingCompany.HappyMarry();}
}

运行结果：

此外，代码体public class StaticProxy {}中的代码也可以写成：

public class StaticProxy {public static void main(String[] args) {Protagonist protagonist = new Protagonist();WeddingCompany weddingCompany = new WeddingCompany(protagonist);weddingCompany.HappyMarry();}
}

与之前所学的Thread线程进行对比，是为同理：

public class StaticProxy {public static void main(String[] args) {new Thread(() -> System.out.println("love")).start();new WeddingCompany(new Protagonist()).HappyMarry();}
}