Reverse a String in Java

I wrote this program to ask the user to give a string and then the program will reverse the given string using Java as my programming language.

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Sample Program Output

Program Listing

ReverseString.java

import java.util.*;

class ReverseString {

    public static void main(String args[]) {

        String original, reverse = "";

        int i=0;

        Scanner input = new Scanner(System.in);

        System.out.println();

        System.out.println("\tReverse a String in Java");

        System.out.println();

        System.out.print("\tGive a String to Reverse : ");

        original = input.nextLine();

        int length = original.length();

        System.out.println();

        for (i = length-1; i >= 0;  i--) 

             reverse = reverse + original.charAt(i);

        System.out.println("\tThe reverse string is " + reverse +".");

        

       System.out.print("\n\n");

       System.out.print("\tEnd of Program");

       System.out.println();

    }

}

Reverse A String in Java

In this article I would like to share with you a simple program that will ask the user to give any string and then our program will reverse the given string by our user using Java as our programming language. I am using Eclipse as my IDE in writing this program. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

Sample Program Output

Program Listing

Reverse_String_Demo.java

/**

 * 

 */

package Reverse_String;

import java.util.*;

/**

 * @author Jacob

 *

 */

public class Reverse_String_Demo {

 public static String  Reverse_Me(String str) {

    

 String Rev_Str;

 

   Rev_Str = "";

   

       for(int a= str.length()-1; a>=0; a--) {

           Rev_Str = Rev_Str + str.charAt(a);

       }

       

       System.out.print("\n\n");

       System.out.println("The Reversed String is " + Rev_Str + ".");

       System.out.println();

       System.out.println("End of Program");

       System.out.println();

       return str; 

 }

/**

* @param args

*/

public static void main(String[] args) {

Scanner user_input =new Scanner(System.in);

String str_me;

        System.out.println();

        System.out.println("Reverse A String in Java");

        System.out.println();

        System.out.println("Written By Mr. Jake R. Pomperada, MAED-IT");

        System.out.println();

System.out.print("Enter any string: ");

        str_me = user_input.nextLine();

        

        Reverse_Me(str_me);

        

        user_input.close();

}

}