Introduction to Programming

compare()

The method int compare(T a, T b, Comparator<T> c) of the class Objects uses the provided comparator's method compare(T o1, T o2) for comparing the two objects. We have described already the behavior of the compare(T o1, T o2) method while talking about sorting collections, so the following results should be expected:

int diff = Objects.compare("a", "c", Comparator.naturalOrder());System.out.println(diff);  //prints: -2diff = Objects.compare("a", "c", Comparator.reverseOrder());System.out.println(diff);  //prints: 2diff = Objects.compare(3, 5, Comparator.naturalOrder());System.out.println(diff);  //prints: -1diff = Objects.compare(3, 5, Comparator.reverseOrder());System.out.println(diff);  //prints: 1

As we have mentioned already, the  ...