Java Project Structure

Guide Java project structure with Maven/Gradle layouts and JPMS modules.

Updated Jan 22, 2026
One-click install
npx skills add https://github.com/ngxtm/skill-rule --skill java-project-structure
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: Java Project Structure
Source: https://github.com/ngxtm/skill-rule/tree/main/rules/java/java-project-structure
Command: npx skills add https://github.com/ngxtm/skill-rule --skill java-project-structure

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the inconsistency and lack of standardization in Java project structures, leading to confusion, integration issues, and increased onboarding time.

Core Features & Use Cases

  • Standard Layouts: Enforces common Maven/Gradle directory structures (src/main/java, src/test/java).
  • Package Conventions: Guides on using reverse domain name notation and layer/feature-based packaging.
  • Architectural Patterns: Details layered architecture principles and DTO usage.
  • Module System (JPMS): Explains module-info.java for modularity.
  • Use Case: A new developer joins a team and needs to understand the project's organization. This Skill provides a clear blueprint for the expected structure, package naming, and architectural layers, enabling them to navigate and contribute effectively within minutes.

Quick Start

Apply standard Maven/Gradle project structure conventions to a new Java project.

Frequently Asked Questions about Java Project Structure

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is the standard directory structure for a Java Maven or Gradle project?

The standard Java project structure enforces common Maven and Gradle directory layouts, placing application code in src/main/java and testing code in src/test/java. This standardization reduces onboarding time and prevents integration issues.

How do I organize Java packages using layer or feature-based conventions?

Organize Java packages using reverse domain name notation combined with layer or feature-based packaging. This architectural pattern details layered architecture principles and DTO usage to address common organizational challenges in software development.

How do I set up the Java Module System using module-info.java?

Set up the Java Module System by defining module-info.java files to establish modularity. This enforces standardized Java project structures and addresses common organizational challenges by detailing JPMS configurations for maintainability.

What is the best way to standardize Java project layouts for new developers?

The best way to standardize Java project layouts is to enforce common Maven and Gradle directory structures alongside package naming conventions. This provides a clear blueprint enabling new developers to navigate and contribute effectively within minutes.

Does the Java Module System work with both Maven and Gradle project structures?

Yes, the Java Module System works with both Maven and Gradle project structures. JPMS modularity is established through module-info.java files, complementing standard directory layouts and package conventions for scalable software development.