静态代理

public class StaticProxy {
    public static void main(String[] args) {
        Rent r = new Worker("张三");//父类引用指向子类对象
        Intermediary intermediary = new Intermediary(r);
        intermediary.rentAnApartment();
    }

}
//找房子功能接口
interface Rent{
    void rentAnApartment();
}

//自己亲自去找房子
class Worker implements Rent{
    private String name;

    public String getName() {
        return name;
    }

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

    @Override
    public void rentAnApartment() {
        System.out.println(this.name+"亲自去看房子，判断要不要租这个房子！");
    }
}
//中介帮你找房子
class Intermediary implements Rent{
    private Rent target;//注意这里是接口

    public Intermediary(Rent target) {
        this.target = target;
    }

    @Override
    public void rentAnApartment() {
        this.before();
        this.target.rentAnApartment();
        this.after();
    }

    private void after() {
        System.out.println("跟中介商量价格！");
    }

    private void before() {
        System.out.println("房屋中介给你住房信息！");
    }
}