<H1>Auto Boxing</H1>
<I>What's the problem here?</I>

public static Integer squareIfEven(Integer value)
{
    Integer result = null;

    if (value % 2 == 0) result = value * value;

    return result;
}


public static void main(String[] args)
{
  int result = squareIfEven(Integer.parse(args[0]));
    // Assume args[0] is definitely an integer.
    
  System.out.println(result);
}