Clean DDD Lessons: Project Structure and Naming Conventions

Introduction:Domain-Driven Design (DDD) emphasizes the importance of modeling software based on the domain it operates in, leading to more maintainable and scalable systems. However, adopting DDD can sometimes be challenging, especially when it comes to organizing project structure and naming conventions. In this tutorial, we'll explore best practices for structuring DDD projects and establishing…


Guide to Decorator Pattern in Java with Examples

In Java, decorators are a structural design pattern that allows behavior to be added to individual objects dynamically, without affecting the behavior of other objects from the same class. Decorators are particularly useful when you need to add functionality to objects in a flexible and reusable way. This tutorial will explain the decorator pattern…


Strategy Pattern with Java Example

Introduction: The Strategy Pattern is a behavioral design pattern that allows defining a family of algorithms, encapsulating each one, and making them interchangeable. In this tutorial, we'll explore the Strategy Pattern using a duck behavior example in Java. Understanding the Strategy Pattern The Strategy Pattern consists of three main components: Strategy: This is an…


Observer Pattern Tutorial with Example in Java

Introduction : The Observer Pattern is a behavioral design pattern where an object, known as the subject, maintains a list of dependents, known as observers, that are notified of any state changes. This pattern is widely used to implement distributed event handling systems. Let's walk through a simple example of the Observer Pattern in…


Factory Pattern Tutorial in Java

1. Overview: The Factory Pattern is a creational design pattern that provides an interface for creating instances of a class but allows subclasses to alter the type of objects that will be created. This pattern promotes loose coupling between classes, making it easier to extend and maintain the code. 2. Example Scenario: Imagine a…


Hexagonal Architecture Tutorial with Java Examples

Introduction Hexagonal Architecture, also known as Ports and Adapters architecture or simply the Onion Architecture, is a design pattern that aims to create a loosely coupled and easily maintainable software system. The core idea is to separate the business logic from external concerns, such as databases, user interfaces, and external services. In this tutorial,…


Understanding Inversion of Control (IoC)

Inversion of Control (IoC) is a design principle where the control flow of a program is inverted: instead of the application controlling the flow of execution, it delegates control to an external framework or container. This helps in achieving loose coupling and better modularization of code. In this tutorial, we'll explore the concept of…


Understanding the Adapter Pattern in Java

The Adapter Pattern is a structural design pattern that allows incompatible interfaces to work together. It acts as a bridge between two incompatible interfaces by converting the interface of a class into another interface that a client expects. This pattern involves a single class called Adapter, which is responsible for joining functionalities of independent…

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Java Singleton Pattern

Singleton Pattern in Java

The Singleton Pattern is a creational design pattern that ensures a class has only one instance and provides a global point of access to that instance. Example :


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