Sum Multiples of Thee and Five

MultiplesThreeAndFive.java

public class Main
{
  public static void main(String[] args)
  {
    MultiplesThreeAndFive myObject = new MultiplesThreeAndFive();
    
    int sum = myObject.getSum(1000);
    System.out.print("sum: " + sum);
  }
}
// this will become its own file too (and these can be in any order)
public class MultiplesThreeAndFive
{
  
  public int getSum(int max){
    int sum = -99;
    
    for (int i = 1; i < max; i++){
      if (i % 3 == 0 || i % 5 == 0){
        
        if (sum == -99)
          sum = i;
        else
          sum += i;
      }
      
    }
    return sum;
  }
  
}

/*Output

sum: 233168

*/