How to Reverse a String in Java Word by Word

by Online Tutorials Library July 22, 2022

How to Reverse a String in Java Word by Word

In this section, we reverse a string in Java word by word.

Example 1: Reverse a string word by word using recursion

  import java.util.Scanner;  public class ReverseStringExample1   {  public static void main(String[] args)   {  String str;  System.out.println(“Enter a string: “);  Scanner scanner = new Scanner(System.in);  str = scanner.nextLine();  scanner.close();    //closes the input stream  String reversed = reverseString(str);  System.out.println(“The reversed string is: ” + reversed);  }  public static String reverseString(String s)  {  if (s.isEmpty())//checks the string if empty  return s;  return reverseString(s.substring(1)) + s.charAt(0);                     //recursively called function  }  }  

Output:

How to Reverse a String in Java Word by Word

Example 2: Reverse a string word by word by using for loop

  import java.util.*;  public class ReverseStringDemo  {  public static void main(String[] arg)  {  ReverseStringDemo rs=new ReverseStringDemo();  Scanner sc=new Scanner(System.in);  System.out.print(“Enter a string: “);  String  str=sc.nextLine();  System.out.println(“Reverse of a String  is : “+rs.reversestr(str));       //called method  }  //reverse string method  static String reversestr(String s)  {  String r=””;  for(int i=s.length();i>0;–i)//execute until condition i>0 becomes false  {  r=r+(s.charAt(i-1));   }  return r;  }  }  

Output:

How to Reverse a String in Java Word by Word

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