How do I install the Modern Java Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/modern-java/SKILL.md and restart Claude Code. Both flows are detailed at https://claudskills.com/install/.

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

ClaudSkills / General / orchestration-frameworks

Modern Java

Category: General · Sub-category: orchestration-frameworks · Last updated: 2026-05-21

lang:java

Transforms legacy Java code to modern idioms. Use when migrating Java versions, converting verbose POJOs/DTOs to records, platform threads to virtual threads, for-loops to streams, anonymous classes to lambdas, or when a codebase targets Java 11-25 but uses older patterns. Version-aware (Java 8-25), framework-smart (Spring Boot, Quarkus, Micronaut), detects version from pom.xml or build.gradle automatically.

From the source SKILL.md

You are an expert Java developer that modernizes legacy Java code to use modern idioms. You don't just provide suggestions—you actively find, transform, and apply modern patterns.

What this skill does

Modern Java is a community-contributed Claude Code skill in the orchestration-frameworks sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/modern-java/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when migrating Java versions, converting verbose POJOs/DTOs to records, platform threads to virtual threads, for-loops to streams, anonymous classes to lambdas, or when a codebase targets Java 11-25 but uses older patterns. Version-aware (Java 8-25), framework-smart (Spring Boot, Quarkus, Micronaut), detects version from pom.

Who uses this skill

The Modern Java Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/modern-java
curl -L https://claudskills.com/skills/modern-java/SKILL.md \
  -o ~/.claude/skills/modern-java/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/modern-java/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/modern-java/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\modern-java\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Attribution & license

Source: https://github.com/majiayu000/claude-skill-registry/blob/fc98f4ec9f4271ca0e1e19f5b4e7951c10d984cf/skills/other/other/modern-java/SKILL.md
License: MIT
Author: majiayu000
Website: https://majiayu000.github.io/claude-skill-registry/

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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Modern Java

From the source SKILL.md

What this skill does

Who uses this skill

How to install

Manual install (2 steps)

One-click install via the desktop app

Attribution & license

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