AI skills for Java
AI Coding Skills for Java
Browse the best AI coding skills for Java in 2026, Spring Boot scaffolding, JUnit 5 + Mockito tests, Maven / Gradle build files, JPA / Hibernate schemas, and security audits. Works with every major AI coding tool.
Short answer
The best AI coding skills for Java are skills-hub's `code-review`, `unit-test` (JUnit 5 + Mockito auto-detection), `api-scaffold` (Spring Boot / Quarkus / Micronaut), `db-schema` (JPA / Hibernate), `secure`, and `dependency-scan` (mvn dependency-check). All portable across Claude Code, Cursor, Codex CLI, Windsurf, Copilot, and Cline.
Java still runs more production services than any other JVM language in 2026, and AI coding tools are mature for it. The skills below detect your Java stack (Spring Boot, Quarkus, Micronaut, JUnit 5, Mockito, Maven, Gradle, Java 21+) and emit idiomatic code with proper records, sealed types, virtual threads where helpful, and correct Maven/Gradle configuration.
Top skills for Java
01code-reviewer
14 installsCode review automation for TypeScript, JavaScript, Python, Go, Swift, Kotlin, C#, .NET, Java, C, C++, Rust, Ruby, PHP, and Dart/Flutter. Analyzes PRs for complexity and risk, checks code quality for SOLID violations and code smells, generates review reports. Use when reviewing pull requests, analyzing code quality, identifying issues, generating review checklists.
Buildfrom Multi-Domain Skills02web-performance-auditor
11 installsAI-powered web performance auditor for frontend and web developers. Use it to audit a website or web app, diagnose poor Core Web Vitals (LCP, CLS, INP) and low Lighthouse scores, review JavaScript bundle size, code splitting, lazy loading, image and font loading, hydration, React rendering, Next.js/Nuxt patterns, network waterfalls, third-party scripts, and caching. Produces a prioritized, senior-engineer performance audit with a score and concrete fixes.
Build03common-security-audit
7 installsProbe for hardcoded secrets, injection surfaces, unguarded routes, business logic flaws, and platform-specific weaknesses across backend (Node, Go, Java, Python, Rust), frontend (React, Angular, Vue), and mobile (iOS, Android, Flutter) codebases. Use when performing security audits, vulnerability scans, secrets detection, or penetration testing.
Buildfrom Multi-Language Standards04front-end-developer
7 installsSenior Front-End Developer expertise in ReactJS, NextJS, JavaScript, TypeScript, HTML, CSS, and modern UI/UX frameworks
Buildfrom Mindrally Skills05exploiting-insecure-deserialization
5 installsIdentifying and exploiting insecure deserialization vulnerabilities in Java, PHP, Python, and .NET applications to achieve remote code execution during authorized penetration tests.
Buildfrom Cybersecurity Skills06java-tooling
4 installsConfigure Maven, Gradle, and static analysis for Java projects. Use for Java-only build and quality tooling such as Spotless, Checkstyle, SpotBugs, SonarLint, JDK versions, and Java service Dockerfiles; defer Kotlin, Android, Flutter, and GitHub Actions-specific configuration.
Buildfrom Multi-Language Standards07chart-visualization
3 installsThis skill should be used when the user wants to visualize data. It intelligently selects the most suitable chart type from 26 available options, extracts parameters based on detailed specifications, and generates a chart image using a JavaScript script.
Buildfrom DeerFlow08javascript-best-practices
2 installsIdiomatic JavaScript patterns and conventions for maintainable existing code. Use when reviewing or refactoring JavaScript language patterns; defer project scaffolding, dependency setup, and tool configuration.
Buildfrom Multi-Language Standards09apk-reverse
2 installs在 CLI 环境下做 Android APK 逆向时使用。适用于 APK 解包、Java 反编译、smali 修改、重打包、Frida 动态 Hook,以及按需切换到 so/native 分析。优先使用本机已安装的 jadx、apktool、frida、adb、ida-reverse、radare2。
Buildfrom Reverse Skill10java-language
2 installsModern Java 21+ language standards including Records, Pattern Matching, and Virtual Threads. Use for Java language constructs or Java-to-Java upgrades; defer Kotlin, tests, formatting/build tools, CompletableFuture, builder patterns, and isolated null-handling questions.
Buildfrom Multi-Language Standards11vertex-ai-api-dev
2 installsGuides the usage of Gemini API on Google Cloud Vertex AI with the Gen AI SDK. Use when the user asks about using Gemini in an enterprise environment or explicitly mentions Vertex AI. Covers SDK usage (Python, JS/TS, Go, Java, C#), capabilities like Live API, tools, multimedia generation, caching, and batch prediction.
Buildfrom Google Gemini12mermaidjs-v11
2 installsCreate diagrams and visualizations using Mermaid.js v11 syntax. Use when generating flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, user journeys, timelines, architecture diagrams, or any of 24+ diagram types. Supports JavaScript API integration, CLI rendering to SVG/PNG/PDF, theming, configuration, and accessibility features. Essential for documentation, technical diagrams, project planning, system architecture, and visual communication.
Buildfrom ClaudeKit Skills13game-engine
2 installsExpert skill for building web-based game engines and games using HTML5, Canvas, WebGL, and JavaScript. Use when asked to create games, build game engines, implement game physics, handle collision detection, set up game loops, manage sprites, add game controls, or work with 2D/3D rendering. Covers techniques for platformers, breakout-style games, maze games, tilemaps, audio, multiplayer via WebRTC, and publishing games.
Buildfrom GitHub Copilot14azure-eventhub-ts
1 installsBuild event streaming applications using Azure Event Hubs SDK for JavaScript (@azure/event-hubs). Use when implementing high-throughput event ingestion, real-time analytics, IoT telemetry, or event-driven architectures with partitioned consumers.
Buildfrom Microsoft15transformers-js
1 installsUse Transformers.js to run state-of-the-art machine learning models directly in JavaScript/TypeScript. Supports NLP (text classification, translation, summarization), computer vision (image classification, object detection), audio (speech recognition, audio classification), and multimodal tasks. Works in browsers and server-side runtimes (Node.js, Bun, Deno) with WebGPU/WASM using pre-trained models from Hugging Face Hub.
Buildfrom Hugging Face16android-tombstone-symbolication
1 installsSymbolicate the .NET runtime frames in an Android tombstone file. Extracts BuildIds and PC offsets from the native backtrace, downloads debug symbols from the Microsoft symbol server, and runs llvm-symbolizer to produce function names with source file and line numbers. USE FOR triaging a .NET MAUI or Mono Android app crash from a tombstone, resolving native backtrace frames in libmonosgen-2.0.so or libcoreclr.so to .NET runtime source code, or investigating SIGABRT, SIGSEGV, or other native signals originating from the .NET runtime on Android. DO NOT USE FOR pure Java/Kotlin crashes, managed .NET exceptions that are already captured in logcat, or iOS crash logs. INVOKES Symbolicate-Tombstone.ps1 script, llvm-symbolizer, Microsoft symbol server.
Buildfrom .NET17bigtable-basics
1 installsAssists in provisioning instances/tables, designing performant schemas, and querying data in Bigtable. Use when designing Bigtable row keys, configuring column families, writing SQL queries or client library code (Java, Go, Python) for Bigtable, or diagnosing performance/hotspotting issues. Also use when provisioning Bigtable clusters using gcloud or cbt CLIs. Don't use for generic Cloud SQL administration.
Buildfrom Google Cloud Skills18adobe-illustrator-scripting
1 installsWrite, debug, and optimize Adobe Illustrator automation scripts using ExtendScript (JavaScript/JSX). Use when creating or modifying scripts that manipulate documents, layers, paths, text frames, colors, symbols, artboards, or any Illustrator DOM objects. Covers the complete JavaScript object model, coordinate system, measurement units, export workflows, and scripting best practices.
Buildfrom GitHub Copilot
Frequently asked questions
Do AI skills understand Spring Boot conventions?
Yes, the api-scaffold and code-review skills detect Spring Boot and emit @RestController / @Service / @Repository layers with proper @Transactional boundaries and ResponseEntity returns.
Can AI generate JUnit 5 tests with Mockito?
Yes. The unit-test skill emits @ExtendWith(MockitoExtension.class), @Mock / @InjectMocks setups, and parametrized tests via @ParameterizedTest with proper @ValueSource / @MethodSource generators.
What's the best AI tool for Java?
Claude Code and Cursor both handle Java well. Cursor's IntelliJ-via-VS-Code-extension or JetBrains plugin is the most popular daily driver; Claude Code excels at multi-module Maven refactors.
Do AI skills handle Java 21 virtual threads?
Yes, modern skills recognize Java 21+ features and use virtual threads where they help (high-fan-out I/O), while staying on platform threads where they don't.