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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 capability: Apply nullability rules

Browse skills that share this capability.

  • modern-java-21 - Modern Java 21+ Coding Standard
    JavaJava 21coding standardscode review

    ★ 39 · Updated 2026-10-07

    Applies Java 21+ coding rules when Java files are created, modified, refactored, fixed, or reviewed.

    ⚙ Clean and order imports⚙ Use modern Java features⚙ Prefer immutable data