静态代理

代理类和目标对象实现同一接口，同时提供额外的功能操作！

package 多线程;

interface  test_{
     void testing();
 }

class people implements test_{
    public void testing(){
        System.out.println("我要考试了啊啊啊啊！");
    }
}

class  teacher implements test_{
     private people p;
     teacher(people p){
         this.p = p;
     }
     public void testing(){
         System.out.println("要想考试，先来跟我学习！");
         p.testing();
         System.out.println("教你可累死我了，快走吧！");
     }
}

public class Test07 {
    public static void main(String[] args) {
        new teacher(new people()).testing();
    }
}