Java program to calculate Sum of Digits of a number

SumOfDigits.java

public class SumOfDigits{
    
    
    public static void main(String args[]){
        
               
     System.out.print("Enter a number : ");
     long number=-9999,input=-9999;
        try{    
           number=Long.parseLong(System.console().readLine());
           input=number;    
        }catch(NumberFormatException nfe){
           System.err.println("Error : Please enter a valid number");
           System.exit(1);    
          }
     System.out.println("Number: "+number);  
        //Actual Logic for calculating Sum of Digits of a number
        long remainder=0,total=0;
        while(number > 0){
            remainder=number % 10;
            total+=remainder;
            number=number/10;
         }
        
        System.out.println("Sum of the Digits of number "+input+" is "+total);
        
    }







}