Java Program to Check if a Number is Palindrome - The Coding Shala

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 In this post, we will learn how to Check if a Number is Palindrome or not in Java.

Java Program to Check if a Number is Palindrome

A Palindrome number is a number that is the same after reversing the number. For example, number 121 is a palindrome number because the reverse of 121 is 121. Write a Java Program to Check if the Given Number is Palindrome or Not.

Example 1:

Input: 545

Output: Palindrome

Input 2:

Input: 234

Output: Not a Palindrome

Approach

First, reverse the number then check if it is equal to the original number or not.

Java Program: 

// Java program to Check Palindrome Number

import java.util.Scanner;

public class Main {
	
	public static void main(String[] args) { 
		
		Scanner sc = new Scanner(System.in);
		System.out.println("Enter a Number: ");
		int num = sc.nextInt();
		int temp = num;
		int reverseNum = 0;
		while(temp > 0) {
			int digit = temp % 10;
			reverseNum = reverseNum * 10 + digit;
			temp = temp / 10;
		}
		
		if (num == reverseNum) {
			System.out.println(num + " is a Palindrome number");
		} else {
			System.out.println(num + " is not a Palindrome number");
		}
		
		sc.close();
	}
}

Output: 

Enter a Number: 
545
545 is a Palindrome number

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