The authors Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides are often referred to as the GoF, or Gang of Four. They published a book titled Design Patterns: Elements of Reusable Object-Oriented Software, which initiated the concept of design patterns in software development.
In this chapter, you will learn what GOF patterns are and how they help solve common problems encountered in object-oriented design.
The Gang of Four (GoF) patterns are 23 classic software design patterns providing recurring solutions to common problems in software design. The patterns are defined in the book Design Patterns: Elements of Reusable Object-Oriented Software. These patterns are categorized into two main categories:
- Core Design Patterns
- J2EE Design Patterns
Furthermore, Core Design Patterns are also subdivided into three main categories of design...
