Listing 1’s main() method sorts a pair of integer arrays via the java.util.Arrays class’s static void sort(int[] a) method, which appears in static method reference and equivalent lambda ...

The Java Platform provides support for this capability in the form of reference queues: instances of the java.lang.ref.ReferenceQueue class.

Method references in Java are part of the broader set of features introduced and enhanced in Java 8 and beyond. They are a concise way to refer to methods of classes or objects.