一、内存分析

代码:引用可以是局部变量也可以是成员变量

 

public class Test1{

  public static void main(String[] args){

    User u = new User();

    u.no = 40;

    u.name = "ajflasd ";

    u.address = new address();

    //name、no都是引用,它们存储的是堆内存中对应实例变量的地址

  }

}

二、对象之间建立关系

 

public class D34_husband_and_wife{

  public static void main(String[] args){  

    Husband huangxiaoming = new Husband();

    Wife baby = new Wife();

    huangxiaoming.name = "huangxiaoming";

    baby.name = "baby";

    //上面的例子其实将两个人割裂开来,没有建立关系

    //下面对她们进行建立关系

    huangxiaoming.w = baby;

    baby.h = huangxiaoming;  

​

  }

}

class Wife {

  String name;

  Husband h;

}

class Husband {

  String name;

  Wife w;

}

 

 

二、源码:

D34_husband_and_wife.java

地址:

https://github.com/ruigege66/Java/blob/master/D34_husband_and_wife.java​

2.CSDN:https://blog.csdn.net/weixin_44630050(心悦君兮君不知-睿)

3.博客园:https://www.cnblogs.com/ruigege0000/

4.欢迎关注微信公众号:傅里叶变换,个人公众号,仅用于学习交流,后台回复”礼包“,获取大数据学习资料

 

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