Using the strategy pattern to change object behavior

The strategy pattern can sometimes be called a policy pattern because it establishes precise steps for runtime execution in a particular situation or state. This pattern is a part of the GoF’s book.

Motivation

The strategy pattern represents a family of algorithms where each one is properly encapsulated. It defines the interchangeability of algorithms to which a particular object can respond. This strategy allows the algorithm to change independently of the clients using it and allows the client to choose the most appropriate one on the fly. In other words, the code allows the client to attach various strategy objects that affect the behavior of the program.

Finding it in the JDK

The strategy pattern is another pattern commonly used without being aware of its use. The Collection framework from the java.base module and the java.util package implements the Comparator class. This class is often used for sorting purposes...