Passing code with behavior parameterization - Java 8 in Action: Lambdas, Streams, and Functional-Style Programming - page 45

 Behavior parameterization is the ability for a method to take multiple different behaviors as
parameters and use them internally to accomplish different behaviors.
 Behavior parameterization lets you make your code more adaptive to changing requirements and
saves on engineering efforts in the future.
 Passing code is a way to give new behaviors as arguments to a method. But it's verbose prior to Java 8.
Anonymous classes helped a bit before Java 8 to get rid of the verbosity associated with declaring
multiple concrete classes for an interface that are needed only once.
 The Java API contains many methods that can be parameterized with different behaviors, which
include sorting, threads, and GUI handling.