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OpenClaw Skills & Use Case Index

ClawIndex is an ecosystem-driven index of OpenClaw skills and real-world use cases.

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Skills with input: Java source code

Browse skills that use this input.

  • spring-data-jpa - Spring Data JPA entity design and repository patterns
    spring-bootspring-data-jpajpaflyway

    ★ 35 · Updated 2026-09-22

    Guides Spring Data JPA entity design, repository pattern implementation, query optimization, N+1 avoidance, and schema migration.

    ⚙ Design JPA entities⚙ Write JpaRepository query methods⚙ Avoid N+1 queries
  • java-architecture-review - Macro-level Java project architecture review and analysis
    javaarchitecturecode-reviewclean-architecture

    ★ 0 · Updated 2026-09-21

    Analyzes Java project architecture at macro level, evaluating package structure, module boundaries, dependency direction, and layering compliance.

    ⚙ Analyze Java package structure⚙ Check layer dependency direction⚙ Identify architectural anti-patterns
  • junit-5-skill - Generate production-grade JUnit 5 tests in Java
    javajunit-5unit-testingintegration-testing

    ★ 281 · Updated 2026-09-18

    Generates JUnit 5 unit and integration tests covering assertions, parameterized tests, lifecycle hooks, Mockito mocking, and nested tests.

    ⚙ Generate JUnit 5 unit tests⚙ Create parameterized tests⚙ Mock dependencies using Mockito
  • code-quality - Code quality checks and formatting rules for the API.
    code-qualityjavaerror-pronenullaway

    ★ 0 · Updated 2026-09-13

    Provides code quality guidelines including javac, Error Prone, NullAway checks, nullability policy, spring-javaformat, and comment rules.

    ⚙ Reformat code using spring-javaformat⚙ Run format, static analysis, and tests⚙ Validate code format and compilation
  • java-junit - Provide best practices for JUnit 5 unit testing.
    junit5javaunit-testingparameterized-testing

    ★ 0 · Updated 2026-09-11

    Provides guidance on writing standard and data-driven unit tests using JUnit 5, Mockito, and Maven or Gradle.

    ⚙ Guide JUnit 5 test structure setup⚙ Provide data-driven testing practices⚙ Guide assertion and exception testing
  • java-performance - JVM Performance Tuning and Analysis
    javajvmperformancegc

    ★ 602 · Updated 2026-09-11

    Optimizes JVM performance through garbage collection tuning, memory analysis, CPU profiling, and benchmarking.

    ⚙ Tune garbage collection⚙ Profile CPU hotspots⚙ Analyze memory leaks
  • build-native-image-gradle - Build GraalVM Native Images with Gradle
    gradlegraalvmnative-imagejava

    ★ 21,695 · Updated 2026-09-11

    Build Java applications into GraalVM native images using Gradle Native Build Tools, configure options, and resolve build or runtime issues.

    ⚙ Compile Java code to native image⚙ Run native executables using Gradle⚙ Execute JUnit tests as native image
  • state-snapshot-instrumenter - Runtime Program State Snapshot Tool
    debuggingstate captureruntime analysiscode instrumentation

    ★ 64 · Updated 2026-05-11

    Instrument Python/C/C++/Java programs to capture runtime snapshots of variables, memory, and call stacks

    ⚙ instrument Python code⚙ instrument C/C++ code⚙ instrument Java code
  • coding - Micronaut Framework Java Implementation
    micronautjavacodingapi-compatibility

    ★ 95 · Updated 2026-05-11

    Implement and review Java code changes for Micronaut framework repositories using maintainer standards

    ⚙ implement Java code⚙ fix framework bugs⚙ evolve internal APIs
  • java-pro - Java 21+ Expert with Spring Boot & Virtual Threads
    Java 21+Spring BootVirtual ThreadsMicroservices

    ★ 0 · Updated 2026-03-26

    Expert Java developer for Java 21+ with Spring Boot 3.x, virtual threads, and cloud-native enterprise applications

    ⚙ develop Java applications⚙ configure Spring Boot⚙ implement virtual threads
  • maven-build - Maven Build Configuration Guide
    MavenJavaBuildTesting

    ★ 602 · Updated 2026-03-20

    Guide for building, testing, and packaging crypto-scout Maven project

    ⚙ build project⚙ run tests⚙ package modules
  • 125-java-concurrency - Java Concurrency Best Practices Implementation
    javaconcurrencythread-safetyscalability

    ★ 57 · Updated 2026-03-09

    Apply Java concurrency best practices for thread safety, scalability and maintainability

    ⚙ validate project compilation⚙ analyze existing concurrency patterns⚙ apply thread safety fundamentals
  • java-coding-standards - Java Coding Standards for Spring Boot Services
    codingJavaSpring Bootbest practices

    ★ 3 · Updated 2026-02-23

    Provides Java coding standards and best practices for Spring Boot services

    ⚙ review Java code⚙ suggest coding standards⚙ provide style guidance
  • java - Java Backend Service Development and Review
    JavaSpring BootBackend DevelopmentAPI Design

    ★ 18 · Updated 2026-02-14

    Build, review, and refactor Java backend services using Spring Boot.

    ⚙ design REST APIs⚙ implement controllers⚙ develop services
  • java - Java Backend Development with Spring Boot
    javaspring-bootbackendrest-api

    ★ 602 · Updated 2026-02-14

    Build, review, and refactor Java backend services using Spring Boot framework

    ⚙ build Java backend services⚙ review Java backend services⚙ refactor Java backend services
  • entity-class-conventions - Entity Class Design Standards
    code-reviewjavaentity-classdatabase

    ★ 5 · Updated 2026-02-12

    Sets standards for entity class design with annotations and database interaction configurations

    ⚙ Review code for guideline compliance⚙ Suggest improvements based on best practices⚙ Explain why patterns are preferred