例子来源于秦小波的《设计模式之禅》

1、代理模式的接口类，代理的类和被代理的类都需要实现此接口

/**
 * @author zhaojianbo
 */
public interface KindWomen {
    void makeEyesWithMan();

    void happyWithMan();
}

2、被代理对象

/**
 * @author zhaojianbo
 */
public class PanJinLian implements KindWomen {
    @Override
    public void makeEyesWithMan() {
        System.out.println("潘金莲在抛媚眼。。。。");
    }

    @Override
    public void happyWithMan() {
        System.out.println("潘金莲在和男人。。。。");
    }
}

3、代理对象

/**
 * @author zhaojianbo
 */
public class WangPo implements KindWomen {
    private KindWomen kindWomen;

    public WangPo() {
        this.kindWomen = new PanJinLian();
    }

    public WangPo(KindWomen kindWomen) {
        this.kindWomen = kindWomen;
    }

    @Override
    public void makeEyesWithMan() {
        this.kindWomen.makeEyesWithMan();
    }

    @Override
    public void happyWithMan() {
        this.kindWomen.happyWithMan();
    }
}

4、测试类

/**
 * @author zhaojianbo
 */
public class XiMenQing {
    public static void main(String[] args) {
        WangPo wangPo = new WangPo();
        wangPo.makeEyesWithMan();
        wangPo.happyWithMan();
    }
}