Method references: A primer. My previous Java 101 tutorial introduced lambda expressions, which are used to define anonymous methods that can then be treated as instances of a functional interface.

Java provides a way for the programmer to exercise control over memory management by marking certain objects as expendable via reference objects. Should an application’s memory requirements ...

It differentiates between these cases via objects instanceof Object[], which returns true when objects references an array of objects. Compile Listing 1 as follows: javac ArraysAreObjects.java ...