学习笔记整理之静态代理模式

public class TestProxy {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Action a1 =new UserAction();
        ActionProxy a2 = new ActionProxy(a1);
        a2.action();

    }

}
interface Action{
    
    public void action();
}

class UserAction implements Action{
    
    public  void action() {
        
        System.out.println("用户开始工作");
        
    }
}
class ActionProxy implements Action{
    private Action targt;

    public  ActionProxy(Action targt) {
        this.targt = targt;
    }
    
    public void action() {
        long start = System.currentTimeMillis();
        targt.action();
        long end = System.currentTimeMillis();
        System.out.println(start-end);
    }
}