Question

(Palindrome number - A number is a palindrome if it reads the same from right to left and from left to right, for example 676 is a palindrome number) Write a program that prompts the user to enter a three-digit integer number and determines whether it is a palindrome number or not

In Java Please

Answer 1

/************ Palindrome.java *************/

import java.util.Scanner;

public class Palindrome {

   public static void main(String[] args) {
       int number;

       /*
       * Creating an Scanner class object which is used to get the inputs
       * entered by the user
       */
       Scanner sc = new Scanner(System.in);

       while (true) {
           // Getting the input entered by the user
           System.out.print("Enter a three difit number :");
           number = sc.nextInt();
           if (number < 100 || number > 999) {
               System.out
                       .println("** Invalid.Must be a three digit number **");
           } else {
               break;
           }
       }

       boolean b = isPalindrome(number);
       if (b) {
           System.out.println(number + " is a palindrome");
       } else {
           System.out.println(number + " is not a palindrome");
       }

   }

   private static boolean isPalindrome(int number) {
       // Declaring variables
       int temp = 0, val;
       int reverse_number = 0;
       val = number;
       // This while loop will reverse the number
       while (number > 0) {
           temp = number % 10;
           reverse_number = reverse_number * 10 + temp;
           number = number / 10;
       }

       if (val == reverse_number)
           return true;
       else
           return false;

   }

}

/*******************************************************/

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Output:

/*******************************************************/