public class FindMyBug
{
    public static void main()
    {
        // I want to add all the numbers from 1 to 5
        
        int i = 0;
        i += 1;
        i += 2;
        i += 3;
        i  = 4;
        i += 5;
        
        // should be 15
        System.out.println(i);
    }
}