Design Patterns in Java

✴ Design patterns are programming language independent strategies for solving the common object-oriented design problems.
That means, a design pattern represents an idea, not a particular implementation.
✴► By using the design patterns you can make your code more flexible, reusable and maintainable.
It is the most important part because java internally follows design patterns.
✦► To become a professional software developer, you must know at least some popular solutions (i.e.
design patterns) to the coding problems.
✦ 【Topics Covered in this App are Listed Below】⇢ Design Pattern – Overview⇢ Factory Pattern⇢ Abstract Factory Pattern⇢ Singleton Pattern⇢ Builder Pattern⇢ Prototype Pattern⇢ Adapter Pattern⇢ Bridge Pattern⇢ Filter/Criteria Pattern⇢ Composite Pattern⇢ Decorator Pattern⇢ Facade Pattern⇢ Flyweight Pattern⇢ Proxy Pattern⇢ Chain of Responsibility Pattern⇢ Command Pattern⇢ Interpreter Pattern⇢ Iterator Pattern⇢ Mediator Pattern⇢ Memento Pattern⇢ Observer Pattern⇢ State Pattern⇢ Null Object Pattern⇢ Strategy Pattern⇢ Template Pattern⇢ Visitor Pattern⇢ MVC Pattern⇢ Business Delegate Pattern⇢ Composite Entity Pattern⇢ Data Access Object Pattern⇢ Front Controller Pattern⇢ Intercepting Filter Pattern⇢ Service Locator Pattern⇢ Transfer Object Pattern⇢ Eager initialization⇢ Lazy initialization⇢ Static block initialization⇢ Bill pugh solution⇢ Background information of factory pattern⇢ Strategy Design Pattern⇢ Single Responsibility Principle⇢ The Open/Closed Principle and Strategy Pattern⇢ Liskov’s Substitution Principle (LSP)⇢ Interface Segregation Principle (ISP)⇢ The Dependency Inversion Principle⇢ Copy Constructor in Java⇢ Cloning using In-memory Serialization⇢ Fluent Interfaces⇢ Using Enum⇢ Adding readResolve()⇢ Adding a serial version id⇢ The Vector Class