We can then match values against these patterns; if a match is found, Java automatically extracts and assigns values as needed. Pattern matching examples. Pattern matching, introduced to Java 14, via ...

David Geary’s series is a masterful introduction to many of the Gang of Four patterns in Java code. Design Patterns is canonical reading for software developers, but many new programmers are ...

See Introduction to design patterns for an overview of the four types of design pattern. When it was first introduced, the Command pattern was sometimes explained as callbacks for Java .