以下这段代码会打印出什么?
String s = "Hello World"; s.toUpperCase(); s.substring(6, 11); StdOut.println(s);
代码:
/** * Description : * Author : mn@furzoom.com * Date : Sep 26, 2016 4:04:42 PM * Copyright (c) 2013-2016, http://furzoom.com All Rights Reserved. */ package com.furzoom.lab.algs.ch102; import edu.princeton.cs.algs4.StdOut; /** * ClassName : E10205 <br> * Function : TODO ADD FUNCTION. <br> * date : Sep 26, 2016 4:04:42 PM <br> * * @version */ public class E10205 { public static void main(String[] args) { String s = "Hello World"; s.toUpperCase(); s.substring(6, 11); StdOut.println(s); } }
由于String是不可变的,故打印如下:
Hello World