以下这段代码会打印出什么?
String string1 = "Hello"; String string2 = string1; string1 = "world"; StdOut.println(string1); StdOut.println(string2);
代码:
/** * Description : * Author : mn@furzoom.com * Date : Sep 26, 2016 4:00:38 PM * Copyright (c) 2013-2016, http://furzoom.com All Rights Reserved. */ package com.furzoom.lab.algs.ch102; import edu.princeton.cs.algs4.StdOut; /** * ClassName : E10204 <br> * Function : TODO ADD FUNCTION. <br> * date : Sep 26, 2016 4:00:38 PM <br> * * @version */ public class E10204 { public static void main(String[] args) { String string1 = "Hello"; String string2 = string1; string1 = "world"; StdOut.println(string1); StdOut.println(string2); } }
String是不可变的类型,故打印内容如下:
world Hello