How to sort an array of objects containing null elements?

Question

In my program an array fClasses of fixed length [7] of objects is created, each object is a class FClass that contains 3 Strings, an <

Answer 1

With Apache Commons Collections 4 you can use ComparatorUtils to do that:

Collections.sort(arr, ComparatorUtils.nullLowComparator(ComparatorUtils.NATURAL_COMPARATOR));