Java Design Patterns: A Hands-On Experience with Real-World Examples

Appendix A: A Brief Overview of GoF Design Patterns

We all have unique thought processes. So, in the early days of software development, engineers faced a common problem—there was no standard to instruct them how to design their applications. Each team followed their own style, and when a new member (experienced or unexperienced) joined an existing team, understanding the architecture was a gigantic task. Senior or experienced members of the team would need to explain the advantages of the existing architecture and why alternative designs were not considered.

The experienced developer also knows how to reduce future efforts by simply reusing the concepts already in place. Design patterns address this kind of issue and provide a common platform ...