Sum of the digits of a three-digit number

gistfile1.txt

package com.codegym.task.task01.task0132;

/* 
Sum of the digits of a three-digit number

*/

public class Solution {
    public static void main(String[] args) {
        System.out.println(sumDigitsInNumber(546));
    }

    public static int sumDigitsInNumber(int number) {
      double sum1 = number%100;//46
      double sum2 = sum1/10;// 4.6
      double sum3 = number%10; //6
       double sum4 = number /100; //5.48
      
      
      return (int) (sum4+ sum2 + sum3);
        
    }
}