Java Core Concepts

📌 Context

This repository represents a structured learning path in Java, built using a professional development workflow.

The focus is not only on learning syntax, but on understanding how Java behaves internally and how to apply its core concepts in real-world backend scenarios.

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🎯 Objective

• Strengthen core Java fundamentals
• Develop problem-solving skills using Java
• Build a solid foundation for backend development (Spring Boot)
• Simulate a real-world engineering workflow (tasks, versioning, CI)

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⚙️ Workflow

This project follows a task-based development approach inspired by real engineering teams:

• Tasks are defined and tracked (Jira-style workflow)
• Each task is developed in an isolated branch (feat/*)
• Code is implemented alongside unit tests
• Commits follow a standardized pattern (Conventional Commits)
• Changes are validated through CI (GitHub Actions)

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🧠 Topics Covered

• Basics (primitives, operators, control flow)
• Object-Oriented Programming (OOP)
• Collections Framework
• Exception Handling
• Streams and Lambdas
• JVM fundamentals

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🧪 Testing

All implementations are expected to include unit tests.

The goal is to validate:

• Expected behavior
• Edge cases
• Code reliability

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🗂️ Project Structure

The codebase is organized by core Java concepts, with isolated modules for each topic:

src/
├── basics/ → control flow, primitives, operators
├── oop/ → encapsulation, inheritance, polymorphism
├── collections/ → List, Set, Map and implementations
├── exceptions/ → custom exceptions and error handling
├── streams/ → functional programming with streams

tests/

Each module contains small, focused implementations designed to reinforce specific concepts.

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🔁 Development Process

Each task follows a consistent flow:

1. Task definition
2. Branch creation (feat/key-jira)
3. Implementation
4. Unit tests
5. Commit using Conventional Commits
6. CI validation

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🚀 Next Steps

This foundation will evolve into a backend application using:

• Spring Boot
• REST APIs
• Database integration
• Clean Architecture / DDD principles

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📋 Commit Pattern

This project follows the Conventional Commits specification:

  <type>(scope): <description>

Examples

  feat: implement arithmetic operations
  test: add unit tests for calculator
  refactor: improve method naming

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🧩 Notes

This repository is part of a continuous learning process focused on backend engineering, system design, and professional development practices.