What are design patterns in Java?
In Java, reusable solutions to typical software design issues that arise during the development process are referred to as design patterns. These patterns offer programmers tried-and-true methods and best practices for creating modular, extendable software.
With the help of Java language features like classes, interfaces, inheritance, and polymorphism, design patterns in Java can be implemented in a way that adheres to the object-oriented programming paradigm. They can be used in other object-oriented languages as well and are not just limited to Java.
Java supports a number of different design patterns, such as creational patterns (such as Singleton and Factory Method), structural patterns (such as Adapter and Decorator), and behavioral patterns (such as Observer and Strategy). Each design pattern focuses on a particular area of software development, such as object generation, composition, or communication.
Types of design patterns:
Creational design patterns:
Creational design patterns put the emphasis on the construction of Objects, offering adaptable and reusable methods to do so. These techniques encourage loose coupling and increase object creation flexibility by assisting in the decoupling of the client code from the specific classes being instantiated.
Singleton Pattern
Prototype Pattern
Factory Pattern
Abstract Factory Pattern
Builder Pattern
Structural Design Patterns:
Design patterns with a structural focus enable flexible and effective interactions between classes and objects by composing them into larger structures. These patterns encourage the reuse and extension of code by defining the connections and structures between items.
Adapter Pattern
Decorator Pattern
Facade Pattern
Proxy Pattern
Composite Pattern
Flyweight Pattern
Bridge Pattern
Behavioral Design Patterns:
Behavioral design patterns define how objects and classes cooperate and carry out their duties by focusing on the communication and interaction between them. By managing complex communication and behavior between objects, these patterns enable the system to be more extendable and maintainable.
Template Pattern
Chain of Responsibility Pattern
Mediator Pattern
Strategy Pattern
Observer Pattern
Command Pattern
State Pattern
Visitor Pattern
Memento Pattern
Interpreter Pattern
Iterator Pattern
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