• Filter Design pattern Learning Reference
• Singleton Design pattern
  -- Simple singleton without thread safe
  -- Thread safe
  -- Thread Safe with double locking
  

Design Patterns used in the project HACS:

• Bridge pattern
• Factory Pattern
• Facade pattern
• Iterator Pattern
• Visitor Pattern

Problem Statement

UML Whiteboard Class Diagram for the project can be found here

Formal Class Diagram

Step by Step Solution guide

• Instructor: Dr. Michael Findler,

1. Design Patterns in JAVA by Telusko
2. Design Patterns in Object Oriented Programming by Christopher Okhravi
3. Gang of Four
4. Head First Design Patterns: A Brain-Friendly Guide