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标题: Java允许两个函数互相调用对方吗？ [打印本页]

作者: swon13 时间: 2014-10-24 14:53
标题: Java允许两个函数互相调用对方吗？
例如，有函数A(), B()
在A()中调用了B(), B()中又调用了A()。
这种调用会陷入无限循环，但在语法上可以通过吗？

作者: 杨佳名 时间: 2014-10-24 15:22
Demo一下呗

作者: zd12345 时间: 2014-10-24 15:25
应该可以的

作者: qq8921310 时间: 2014-10-24 15:38
应该是不可以。

作者: 践行渐远 时间: 2014-10-24 17:29
相互调用是可以的，只是运行起来会让堆内存溢出

作者: 付江涛 时间: 2014-10-24 17:30
这完全可以自己试一下

作者: 迷茫小王 时间: 2014-10-24 17:32
相互调用应该是可以的，但是两个函数相互调用之后他俩玩起来了，内存受不鸟了...

作者: shuken1990 时间: 2014-10-24 17:44
语法上可以通过

作者: 面具猴 时间: 2014-10-24 18:10
可以的，的确会形成死循环，但是递归算法就是用的这个方式，只要控制好条件就好了。
比如可以在给函数传递一个参数，用来确定递归的层次，每进入一层递归就减去一，当传入参数为0时return。

作者: 千里马 时间: 2014-10-24 22:59
这个是可以实现的，你可以试试两个函数中互相调用各自的循环部分，这样就可以实现死循环！

作者: 康师傅-蛋黄派 时间: 2014-10-24 23:01
可以的，控制好，别整成死循环就行

作者: 田峻菘 时间: 2014-10-24 23:13
可以的。

作者: noiary 时间: 2014-10-24 23:13

/*
测试两个函数互相调用是否可行
*/
public class Demo {
public static void main(String[] args) {
method_1();
}
public static void method_1() {
System.out.println("method_1");
method_2();
}
public static void method_2() {
System.out.println("method_2");
method_1();
}
}

复制代码

打印结果开始时是死循环,跑一会就会出现:

  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)
  at Demo.method_2(Demo.java:18)
  at Demo.method_1(Demo.java:13)

作者: renchiyao 时间: 2014-10-24 23:24
理论上是行得通，但感觉这种情况，没有多大实际操作价值吧？

作者: 郑飞 时间: 2014-10-25 00:26
可以的我矩阵打印连续数字就是这么搞得

作者: 王世虎 时间: 2014-10-25 09:48
嗯，这个问题问的好，学习了

作者: 齐宁宁 时间: 2014-10-25 09:56
可以，但要加上条件限制。比如在A中加上条件，并且调用B。在B中判断条件，满足则进行某项操作，不满足则调用A。可用函数的相互调用实现另类的循环

作者: 韶山 时间: 2014-10-26 08:30
可以，但是会卡死的

作者: 菜鸟一号 时间: 2014-10-26 09:01
这个是可以的，你等着死循环就是了，最好加些结束的条件啦

作者: zhangyangLengen 时间: 2014-10-26 09:33
可以的，编译时没有问题，但是运行时死循环

作者: lyhwd2 时间: 2014-10-26 13:36
可以的 . 类似死递归吧 . 最终肯定会报错

作者: 皮三藏 时间: 2014-10-26 14:00
可以通过编译器检查

作者: EDDY_Liang 时间: 2014-10-26 14:15
可以，不过要在一个方法里设置停止的语句，不然就是内存溢出了

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