--- description: Palindrome number in Java: A Palindrome number is a number that even when reversed is the same as the original number Examples of Palindrome Number 121, 393, 34043, 111, etc. title: Palindrome Number Program in Java Using while & for Loop --- [Skip to content](#main) ## What is Palindrome Number? A **Palindrome number** is a number that remains the same number when it is reversed. For example, 131\. When its digits are reversed, it remains the same number. Palindrome number has reflection symmetry at the vertical axis. It refers to the word which has the same spelling when its letters are reversed. **Examples of Palindrome Number in Java** 121, 393, 34043, 111, 555, 48084 **Examples of Palindrome Number** LOL, MADAM ## Palindrome Number Algorithm Below is Palindrome number algorithm logic in Java: * Fetch the input number that needs to be checked for being a [Palindrome](https://www.guru99.com/palindrome-program-in-python.html) * Copy number into a temporary variable and reverse it. * Compare the reversed and original number. * If they are same, number is “palindrome number” * Else number is not “palindrome number” ## How to check whether input number is Palindrome or not Below is a Palindrome program in Java with [WHILE Loop](https://www.guru99.com/how-to-use-loops-in-javascript.html) package com.guru99; public class PalindromeNum { public static void main(String[] args) { int lastDigit,sum=0,a; int inputNumber=171; //It is the number to be checked for palindrome a=inputNumber; // Code to reverse a number while(a>0) { System.out.println("Input Number "+a); lastDigit=a%10; //getting remainder System.out.println("Last Digit "+lastDigit); System.out.println("Digit "+lastDigit+ " was added to sum "+(sum*10)); sum=(sum*10)+lastDigit; a=a/10; } // if given number equal to sum than number is palindrome otherwise not palindrome if(sum==inputNumber) System.out.println("Number is palindrome "); else System.out.println("Number is not palindrome"); } } ### Code Output: Input Number 171 Last Digit 1 Digit 1 was added to sum 0 Input Number 17 Last Digit 7 Digit 7 was added to sum 10 Input Number 1 Last Digit 1 Digit 1 was added to sum 170 Number is palindrome ## Program to Check Palindrome using for loop Below is a Java program for Palindrome using for loop package com.guru99; public class PalindromeNum { public static void main(String[] args) { int lastDigit,sum=0,a; int inputNumber=185; //It is the number to be checked for palindrome a=inputNumber; // Code to reverse a number for( ;a != 0; a /= 10 ) { System.out.println("Input Number "+a); lastDigit=a%10; //getting remainder System.out.println("Last Digit "+lastDigit); System.out.println("Digit "+lastDigit+ " was added to sum "+(sum*10)); sum=(sum*10)+lastDigit; a=a/10; } // if given number equal to sum than number is palindrome otherwise not palindrome if(sum==inputNumber) System.out.println("Number is palindrome "); else System.out.println("Number is not palindrome"); } } ### Code Output: Input Number 185 Last Digit 5 Digit 5 was added to sum 0 Input Number 1 Last Digit 1 Digit 1 was added to sum 50 Number is not palindrome #### Summarize this post with: ChatGPT Perplexity Grok Google AI **Stay Updated on AI** **Get Weekly AI Skills, Trends, Actionable Advice.** ##### Sign up for the newsletter Subscribe for Free You have successfully subscribed. 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