Java Plugins for Claude Code

A Claude Code plugin marketplace with 3 focused plugins for Java developers. All plugins support Java 8 through Java 21 and tailor advice to your target Java version.

Plugins

Plugin	Skills	Commands	Agents	Install when
java-core	14	2	java-architect, java-build-resolver	Every Java project
java-spring	9	2	java-spring-expert	Spring Boot projects
java-quality	3	1	java-security-reviewer, java-performance-reviewer, java-test-engineer	Quality enforcement

Quick Setup (5 minutes)

1. Copy templates/CLAUDE.md.template to your Java project root as CLAUDE.md and fill in the placeholders
2. Copy templates/settings.json.template to .claude/settings.local.json to pre-approve build/test commands
3. Install the plugins (below)

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Installation

Step 1 — Add the marketplace

/plugin marketplace add ducpm2303/claude-java-plugins

Step 2 — Install plugins

/plugin install java-core@java-plugins       # every Java project
/plugin install java-spring@java-plugins     # Spring Boot projects
/plugin install java-quality@java-plugins    # security + performance + testing

Updating

/plugin marketplace update java-plugins

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Skills (auto-invoked)

Skills activate automatically based on context, or invoke them explicitly.

java-core

Skill	What it does
/java-core:java-review	Review Java code for bugs, naming issues, and version-appropriate idioms
/java-core:java-refactor	Suggest and apply version-gated refactorings
/java-core:java-explain	Explain Java code in plain language
/java-core:java-fix	Diagnose compile errors or stack traces
/java-core:java-docs	Generate Javadoc for classes and methods
/java-core:java-health	Structural health score across Security, Tests, Performance, Quality (A–F)
/java-core:java-concurrency-review	Review thread safety, race conditions, and Java 21 virtual thread compatibility
/java-core:java-api-review	Review REST API design — HTTP methods, status codes, naming, versioning
/java-core:java-migrate	Interactive migration guide: Java 8→11, 11→17, or 17→21
/java-core:java-commit	Generate a Conventional Commits message for staged Java changes
/java-core:java-solid	Check all 5 SOLID principles with Java-specific patterns
/java-core:java-design-pattern	Detect GoF patterns in code or recommend a pattern for a problem
/java-core:java-adr	Create, list, and manage Architecture Decision Records
/java-core:java-clean-arch	Review for Clean/Hexagonal Architecture violations or scaffold a full hexagonal layout with DDD patterns

java-spring

Skill	What it does
/java-spring:java-scaffold	Scaffold a brand-new Spring Boot project (2.7.x – 4.0.x)
/java-spring:java-jpa	Deep JPA review — N+1 queries, fetch strategies, projections, Specifications
/java-spring:java-logging	Review logging — SLF4J, MDC, structured logging, PII safety
/java-spring:java-crud	Generate a complete CRUD feature in an existing project
/java-spring:java-security	Review or generate Spring Security config — JWT, OAuth2, method security, CORS (Boot 2.x & 3.x)
/java-spring:java-openapi	Generate or review OpenAPI/Swagger docs — @Tag, @Operation, @Schema, JWT auth scheme (springdoc v1/v2)
/java-spring:java-spring-ai	Add AI features to Spring Boot — ChatClient, RAG, tool calling, memory (Spring AI 1.x / LangChain4J)
/java-spring:java-resilience	Add Resilience4J patterns — circuit breaker, retry, rate limiter, bulkhead, timeout (Boot 2.x & 3.x)
/java-spring:java-cache	Add or review Spring Cache — Caffeine (single-instance) or Redis (distributed), @Cacheable/@CacheEvict/@CachePut

java-quality

Skill	What it does
/java-quality:java-security-check	Quick OWASP scan — secrets, injection, weak crypto, Spring Security misconfigs
/java-quality:java-perf-check	Quick performance scan — N+1, memory, threading, algorithmic hotspots
/java-quality:java-test	Generate JUnit 5 + Mockito unit or Testcontainers integration tests

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Commands (explicit slash commands)

Commands are explicitly triggered workflows — builds, analysis runs, and reports.

java-core

Command	What it does
/java-core:build	Run a clean Maven/Gradle build and report test results or compile errors
/java-core:check	Run configured static analysis (Checkstyle, SpotBugs, PMD) and report findings

java-spring

Command	What it does
/java-spring:run	Start the Spring Boot app locally with pre-flight checks (env vars, DB)
/java-spring:routes	Print a REST endpoint table scanned from all @RestController classes

java-quality

Command	What it does
/java-quality:audit	Full quality audit: security + performance + test coverage in one combined report

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Agents

Agents are specialist sub-agents Claude can delegate to:

Agent	Plugin	Use for
java-architect	java-core	Project structure, hexagonal/layered architecture, multi-module Maven, design patterns
java-build-resolver	java-core	Fix Maven/Gradle/javac build errors with minimal changes
java-spring-expert	java-spring	Spring Boot best practices, Spring Data JPA, Spring Security, REST API design
java-security-reviewer	java-quality	Full OWASP Top 10 deep-dive, Spring Security misconfig, secrets audit
java-performance-reviewer	java-quality	Deep JPA/memory/threading performance analysis with before/after fixes
java-test-engineer	java-quality	Test strategy, coverage analysis, Testcontainers setup, PITest mutation testing

**Examp