静态代理模式

案例

public class StaticProxy {
}

interface Marry{

    void HappyMarry();

}

//真实角色
class You implements Marry{

    @Override
    public void HappyMarry() {
        System.out.println("我要结婚了！，超开心");
    }

}

//代理角色，婚前公司
class WeddingCompany implements Marry{

    private Marry target;

    public WeddingCompany(Marry target) {
        this.target = target;
    }

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

    private void before() {
        System.out.println("结婚之前");
    }

    private void after() {
        System.out.println("结婚之后");
    }

    public static void main(String[] args) {

        //lambda表达式
        new Thread(()-> System.out.println("我爱你")).start();

        /*
         new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println("我爱你");
            }
        }).start();
        * */


        WeddingCompany weddingCompany = new WeddingCompany(new You());
        weddingCompany.HappyMarry();

    }

}

总结

目标对象和代理对象都要实现同一个接口
代理对象要代理真实角色