java - 向后打印字符串

Question

我正在尝试反向打印字符串。即

hello world 

应该显示为:

 dlrow olleh

但结果只显示第一个单词的相反。即

 olleh

有什么想法吗？

import java.util.Scanner;

public class test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input = new Scanner(System.in);

        System.out.println("Input a string:"); 
        String s;
        s = input.next();

        String original, reverse = "";

        original = s;

        int length = original.length();

        for ( int i = length - 1 ; i >= 0 ; i-- )
            reverse = reverse + original.charAt(i);

        System.out.println("Reverse of entered string is: "+reverse);
        input.close();  
    }
}

Answer 1

使用input.next()仅存储变量中的下一个单词(仅“hello”)。试试这个:

    System.out.println("Input a string:");
    String s;
    s = input.nextLine();

    System.out.println("entered: " + s);