How to find array index of largest value?

public int getIndexOfLargest( int[] array )
{
  if ( array == null || array.length == 0 ) return -1; // null or empty

  int largest = 0;
  for ( int i = 1; i < array.length; i++ )
  {
      if ( array[i] > array[largest] ) largest = i;
  }
  return largest; // position of the first largest found
}

int maxAt = 0;

for (int i = 0; i < array.length; i++) {
    maxAt = array[i] > array[maxAt] ? i : maxAt;
}