Java Program to check whether a number is palindrome or not. e.g. 121 is palindrome as If we reverse the order of digits, its the same number

PalindromeNumberCheck.java

import java.util.Scanner;
import java.util.InputMismatchException;

public class PalindromeNumberCheck{
    
    public static void main(String args[]){
      long number=-999,copyOfNumber=-999;    
      System.out.print("Enter a Number : ");
      Scanner sc=new Scanner(System.in);
        try{
         number=sc.nextLong();    
         copyOfNumber=number;    
        }catch(InputMismatchException ime){
               System.err.println("Error : Please eneter a valid number");
               System.exit(1);
        }
        long remainder=0;
        String str="";
        while(number >0){
            remainder=number%10;
            str=str+remainder; 
            number=number/10;
        }
       
        
        if(Long.parseLong(str)==copyOfNumber){
         System.out.println("Number "+copyOfNumber+" is Palindrome");   
        }else{
         System.out.println("Number "+copyOfNumber+" is not a Palindrome");    
        }
        
    }    
    
}