package com.mycompany.test;

public class Calculator{

  public static void main(String[] args){
    int a = 4;
    int b = 2;
    System.out.print( sum(a,b));}

    private static int sum(int a, int b){
      return a + b;
    }

    private static int minus(int a, int b){
      return a - b;
    }
}
