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Java Program To reverse a String | 3 Ways To Reverse String In Java

 Java Program To reverse a String | 3 Ways To Reverse String In Java

========================================================================

Way - 1
=============

import java.util.Scanner;

public class ReverseString1 {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the String:");
        String str = sc.nextLine();

        String revString = "";

        for (int i = str.length() - 1; i >= 0; i--) {
            revString = revString + str.charAt(i);
        }

        System.out.println("The Reverse Of the String is:" + revString);

    }

}


Way - 2
============

import java.util.Scanner;

public class ReverseString2 {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the String:");

        String str = sc.nextLine(); // Read the user input from console

        char[] ch = str.toCharArray(); // Convert String into char[]

        String revString = "";

        for (int i = ch.length - 1; i >= 0; i--) {
            revString = revString + ch[i];
        }
        System.out.println("The reverse of the String is:" + revString);

    }

}

Way - 3
==========

import java.util.Scanner;

public class ReverseString3 {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the String:");
        String str = sc.nextLine(); // Read the User Input From Console

        StringBuffer sb = new StringBuffer(str);
        StringBuffer revString = sb.reverse();
        System.out.println("The reverse of the String: " + revString);

    }
}

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