java设计模式之--代理模式

1、定义：为其他对象提供一种代理以控制对这个对象的访问。

2、代码：

　　代理接口：

public interface IGiveGift {

    void giveMoney();
    void giveCar();
    void giveHouse();

}

实际对象：

public class RealRichBoy implements IGiveGift {

    PrettyGirl girl;

    public RealRichBoy(PrettyGirl girl){
        this.girl = girl;
    }

    public void giveMoney() {
        System.out.println(girl.getName() + "送你钱！");
    }

    public void giveCar() {
        System.out.println(girl.getName() + "送你车！");
    }

    public void giveHouse() {
        System.out.println(girl.getName() + "送你房！");
    }
}
代理对象：

public class PoorRichBoy implements IGiveGift {

    private RealRichBoy boy;

    public PoorRichBoy (PrettyGirl girl) {
        boy = new RealRichBoy(girl);
    }

    public void giveMoney() {
        boy.giveMoney();
    }

    public void giveCar() {
        boy.giveCar();
    }

    public void giveHouse() {
        boy.giveHouse();
    }
}

目标：

public class PrettyGirl {

    private String name;

    public PrettyGirl (String name){
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

测试类：

public class Main {

    public static void main(String[] args) {
        PrettyGirl girl = new PrettyGirl("小美女");
        PoorRichBoy boy = new PoorRichBoy(girl);
        boy.giveMoney();
        boy.giveCar();
        boy.giveHouse();

    }

}