How to reverse each word of a string in Java?

Split the given string into various substrings, whenever space is encountered. Reverse each substring and create a new string from the reversed substrings. This tutorial will show How to reverse each word of a string in Java.

See the below code:

Code:

import java.io.BufferedReader;
 import java.io.InputStreamReader;
 
 public class ReverseWordsInPlace {
  // Function to reverse the string
  static String reverseString(String str) {
  String[] words = str.split(" ");
  String rev = "";
  int i, j;
  for (i = 0; i < words.length; i++) {
  StringBuffer sb = new StringBuffer(words[i]);
  rev+=sb.reverse().toString();
  rev+=" ";
  }
  return rev;
  }
  // Function to read the input and display the output
  public static void main(String[] args) {
  BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  System.out.println("Enter the string : ");
  String str;
  try{
  str=br.readLine();
  }
  catch(Exception e){
  System.out.println("Error reading input");
  return;
  }
  String rev = reverseString(str);
  System.out.println("The reverse of the string is :");
  System.out.println(rev);
  }
 }

Output:

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