Question

I have a standard java array, where null values are used for unassigned or empty spots in the array. How can I tell if there are unassigned values left, i.e. if the array is not full?

Answer 1

If “not full” meaning there are null elements in the array, then you would create a method such as

public boolean isFull(Object[] array) {
   for (Object element : array) {
      if (element == null) return false;
   }
   return true;
}