RealSubJect.java

package com.example;

/**
 * Intro:
 * Author: zhangxutong
 * E-mail: mcxtzhang@163.com
 * Home Page: http://blog.csdn.net/zxt0601
 * Created:   2017/2/8.
 * History:
 */

public class RealSubJect implements ISubject {
    @Override
    public void doSth() {
        System.out.println("real subject do sth method...");
    }
}