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Refactor Java

Category: Engineering  ·  Sub-category: code-quality  ·  Last updated:
Comprehensive catalog of 60+ refactoring techniques for Java code based on Martin Fowler's "Refactoring" and Alexander Shvets' "Refactoring Guru". Use this skill whenever the user asks to refactor Java code, improve code quality, eliminate code smells, simplify conditionals, restructure classes, improve API design, or apply any named refactoring technique. Also trigger when the user mentions code smells, legacy code improvement, clean code practices, SOLID principles in Java, or asks "how can I improve this code". Covers Java 8 and Java 11+ examples for every technique. Even if the user just pastes Java code and asks for improvement suggestions, use this skill to identify applicable techniques. También se activa en castellano: "refactorizar", "refactorizar código Java", "mejorar este código", "malos olores del código", "olores de código", "código sucio", "limpiar código", "simplificar condicionales", "principios SOLID", "cómo mejorar este código", "código limpio", "reestructurar clase", "mejorar calidad del código", "técnica de refactorización", "extraer método", "renombrar variable", "mover método", "eliminar código duplicado", "reducir complejidad", "mejorar legibilidad", "reorganizar código".

From the source SKILL.md

A comprehensive, technique-by-technique catalog of refactoring best practices for Java, sourced from Martin Fowler's Refactoring: Improving the Design of Existing Code (2nd Edition) and Alexander Shvets' Refactoring in Java (Refactoring Guru).

What this skill does

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

Who uses this skill

The Refactor Java Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. 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/refactor-java
curl -L https://claudskills.com/skills/refactor-java/SKILL.md \
  -o ~/.claude/skills/refactor-java/SKILL.md

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

Skills live at ~/.claude/skills/refactor-java/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\refactor-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

More Engineering skills

Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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