Java Program To Check The Palindrome Nature Of Number / String | Palindrome Number and Palindrome String

 Java Program To Check The Palindrome Nature Of Number / String| Palindrome Number and Palindrome String

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

To Check Palindrome Number :

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

import java.util.Scanner;

public class PalindromeNumber {

    public static void main(String[] args) {

        // A number is said to be palindrome if its reverse digits are equals to the

        // original number digit's

        // Example: 121 Number is Palindrome

        Scanner sc = new Scanner(System.in);

        System.out.println("Enter the Number:");

        Integer num = sc.nextInt(); // Read User Input From Console

        Integer org_num = num; // Copied num into org_num.

        Integer rev = 0;

        while (num > 0) {

            rev = rev * 10 + num % 10;

            num = num / 10;

        }

        if (rev == org_num) {

            System.out.println("The Entered Number is palindrome");

        } else {

            System.out.println("The Entered Number is not palindrome");

        }

    }

}

To Check The Palindrome String

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

import java.util.Scanner;

public class PalindromeString {

    public static void main(String[] args) {

        // A String is said to be Palindrome if it's reversal is equivalent to the

        // original String

        // Example : 1) MADAM

        Scanner sc = new Scanner(System.in);

        System.out.println("Enter the String:");

        String str = sc.nextLine(); // Read the User Input From Console

        String org_string = str;

        String revString = "";

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

            revString = revString + str.charAt(i);

        }

        if (org_string.equals(revString)) {

            System.out.println(org_string + "is a palindrome String");

        } else {

            System.out.println(org_string + "is not a palindrome String");

        }

    }

}