https://github.com/ashfaqbs/design-pattern

curated collection of Java-based design patterns with clear explanations, real-world use cases, and clean implementations. Covers creational, structural, and behavioral patterns with a focus on clarity, modularity, and relevance to modern system design.
https://github.com/ashfaqbs/design-pattern

design-patterns singelton-pattern

Last synced: 12 months ago
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curated collection of Java-based design patterns with clear explanations, real-world use cases, and clean implementations. Covers creational, structural, and behavioral patterns with a focus on clarity, modularity, and relevance to modern system design.

• Host: GitHub
• URL: https://github.com/ashfaqbs/design-pattern
• Owner: Ashfaqbs
• Created: 2024-11-23T15:49:30.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2025-06-30T06:20:39.000Z (12 months ago)
• Last Synced: 2025-06-30T07:27:49.898Z (12 months ago)
• Topics: design-patterns, singelton-pattern
• Language: Java
• Homepage:
• Size: 899 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
Design patterns are reusable solutions to common software design problems. In Java, they are categorized broadly into three main types: 

1. **Creational Design Patterns**  

   Focus: Object creation mechanisms to create objects in a way that is suitable for the situation.  

   - Help make the system independent of how objects are created, composed, and represented.  

   - Key idea: **Control object creation to ensure flexibility and reuse.**

   **Examples:**  

   - Singleton  

   - Factory Method  

   - Abstract Factory  

   - Builder  

   - Prototype  

2. **Structural Design Patterns**  

   Focus: Class and object composition to form larger structures.  

   - Help ensure that different parts of a system work together in a flexible and efficient way.  

   - Key idea: **Simplify relationships between objects or combine them for new functionality.**

   **Examples:**  

   - Adapter  

   - Bridge  

   - Composite  

   - Decorator  

   - Facade  

   - Flyweight  

   - Proxy  

3. **Behavioral Design Patterns**  

   Focus: Interaction and communication between objects.  

   - Help define how objects interact, how responsibilities are distributed, and how workflows are controlled.  

   - Key idea: **Streamline complex communication between objects.**

   **Examples:**  

   - Chain of Responsibility  

   - Command  

   - Interpreter  

   - Iterator  

   - Mediator  

   - Memento  

   - Observer  

   - State  

   - Strategy  

   - Template Method  

   - Visitor  

### Quick Analogy for Understanding Types  

1. **Creational Patterns:** Think of building a house. You decide how to construct it: blueprint (Prototype), modular pieces (Builder), or hiring a factory (Factory Method).  

2. **Structural Patterns:** Consider how you connect rooms: walls (Adapter), open spaces (Bridge), or fancy decorations (Decorator).  

3. **Behavioral Patterns:** It’s about how people in the house interact: assigning tasks (Command), following workflows (Template Method), or broadcasting news (Observer).