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Official agent skill

Java Refactoring Extract Method

by github in github/awesome-copilot

Refactoring using Extract Methods in Java Language. An agent skill from github/awesome-copilot.

OfficialMITAuto-check passedDevelopment

Install Java Refactoring Extract Method

skills CLI
$ npx skills add github/awesome-copilot --skill java-refactoring-extract-method -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install github/awesome-copilot java-refactoring-extract-method --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/github/awesome-copilot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/java-refactoring-extract-method .claude/skills/java-refactoring-extract-method && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
java-refactoring-extract-method
GitHub stars
40k
Used in
1 other repo
Token cost
~873 tokens
SKILL.md length
170 words
Files
1
Skills in repo
417
Repo updated
First seen
Licence
MIT

At a glance

Refactoring using Extract Methods in Java Language. An agent skill from github/awesome-copilot.

  • Tasks that involve Refactoring
  • SKILL.md covers Role, Code Before Refactoring 1:, Code After Refactoring 1: and Code Before Refactoring 2:, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Java Refactoring Extract Method is an agent skill from github/awesome-copilot, published by the product's own GitHub organization. Refactoring using Extract Methods in Java Language

Its SKILL.md is about 870 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Refactoring. It works with Java. The repository describes itself as: Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot. The licence is MIT.

When your agent uses it

  • Tasks that involve Refactoring

Example prompts

  • “/java-refactoring-extract-method”

What it can do on your machine

Read from SKILL.md and the folder at commit 7cce7cf. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are java).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Java Refactoring Extract Method loads about 873 tokens when it runs. Until then it costs about 21 tokens; SKILL.md has 170 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~21
When it runs · the whole SKILL.md, loaded when a task matches
~873

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from github/awesome-copilot at commit 7cce7cf, republished under its MIT licence (© github). 170 words, ~873 tokens.

Download SKILL.mdSave it as .claude/skills/java-refactoring-extract-method/SKILL.md (or your agent's skills folder).
name
java-refactoring-extract-method
description
Refactoring using Extract Methods in Java Language

Refactoring Java Methods with Extract Method

Role

You are an expert in refactoring Java methods.

Below are 2 examples (with titles code before and code after refactoring) that represents Extract Method.

Code Before Refactoring 1:

java
public FactLineBuilder setC_BPartner_ID_IfValid(final int bpartnerId) {
	assertNotBuild();
	if (bpartnerId > 0) {
		setC_BPartner_ID(bpartnerId);
	}
	return this;
}

Code After Refactoring 1:

java
public FactLineBuilder bpartnerIdIfNotNull(final BPartnerId bpartnerId) {
	if (bpartnerId != null) {
		return bpartnerId(bpartnerId);
	} else {
		return this;
	}
}
public FactLineBuilder setC_BPartner_ID_IfValid(final int bpartnerRepoId) {
	return bpartnerIdIfNotNull(BPartnerId.ofRepoIdOrNull(bpartnerRepoId));
}

Code Before Refactoring 2:

java
public DefaultExpander add(RelationshipType type, Direction direction) {
     Direction existingDirection = directions.get(type.name());
     final RelationshipType[] newTypes;
     if (existingDirection != null) {
          if (existingDirection == direction) {
               return this;
          }
          newTypes = types;
     } else {
          newTypes = new RelationshipType[types.length + 1];
          System.arraycopy(types, 0, newTypes, 0, types.length);
          newTypes[types.length] = type;
     }
     Map<String, Direction> newDirections = new HashMap<String, Direction>(directions);
     newDirections.put(type.name(), direction);
     return new DefaultExpander(newTypes, newDirections);
}

Code After Refactoring 2:

java
public DefaultExpander add(RelationshipType type, Direction direction) {
     Direction existingDirection = directions.get(type.name());
     final RelationshipType[] newTypes;
     if (existingDirection != null) {
          if (existingDirection == direction) {
               return this;
          }
          newTypes = types;
     } else {
          newTypes = new RelationshipType[types.length + 1];
          System.arraycopy(types, 0, newTypes, 0, types.length);
          newTypes[types.length] = type;
     }
     Map<String, Direction> newDirections = new HashMap<String, Direction>(directions);
     newDirections.put(type.name(), direction);
     return (DefaultExpander) newExpander(newTypes, newDirections);
}
protected RelationshipExpander newExpander(RelationshipType[] types,
          Map<String, Direction> directions) {
     return new DefaultExpander(types, directions);
}

Task

Apply Extract Method to improve readability, testability, maintainability, reusability, modularity, cohesion, low coupling, and consistency.

Always return a complete and compilable method (Java 17).

Perform intermediate steps internally:

  • First, analyze each method and identify those exceeding thresholds:
    • LOC (Lines of Code) > 15
    • NOM (Number of Statements) > 10
    • CC (Cyclomatic Complexity) > 10
  • For each qualifying method, identify code blocks that can be extracted into separate methods.
  • Extract at least one new method with a descriptive name.
  • Output only the refactored code inside a single java block.
  • Do not remove any functionality from the original method.
  • Include a one-line comment above each new method describing its purpose.

Code to be Refactored:

Now, assess all methods with high complexity and refactor them using Extract Method

© github, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/java-refactoring-extract-method of github/awesome-copilot.

Open the folder on GitHubat commit 7cce7cf

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in github/awesome-copilot, which our catalogue first saw on October 7, 2026.

Compare with similar skills

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Works with

Categories

Questions about Java Refactoring Extract Method

What does Java Refactoring Extract Method do?

Refactoring using Extract Methods in Java Language. An agent skill from github/awesome-copilot. Java Refactoring Extract Method is an agent skill from github/awesome-copilot, published by the product's own GitHub organization.

When should I use Java Refactoring Extract Method?

Java Refactoring Extract Method fits situations like: tasks that involve Refactoring.

How do I install Java Refactoring Extract Method in Claude Code?

Run `npx skills add github/awesome-copilot --skill java-refactoring-extract-method -a claude-code`. Or copy the skill folder (skills/java-refactoring-extract-method in github/awesome-copilot) into .claude/skills/java-refactoring-extract-method in your project. Claude Code loads it when a task matches its description.

How do I install Java Refactoring Extract Method in Codex?

Run `npx skills add github/awesome-copilot --skill java-refactoring-extract-method -a codex`. Or copy the skill folder (skills/java-refactoring-extract-method in github/awesome-copilot) into .agents/skills/java-refactoring-extract-method in your project. Codex loads it when a task matches its description.

Can I use Java Refactoring Extract Method in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add github/awesome-copilot --skill java-refactoring-extract-method -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/java-refactoring-extract-method, .gemini/skills/java-refactoring-extract-method, .github/skills/java-refactoring-extract-method and .opencode/skills/java-refactoring-extract-method in your project.

What does Java Refactoring Extract Method need to run?

SKILL.md names no scripts, command-line tools or credentials: Java Refactoring Extract Method is instructions for the agent only.

Does Java Refactoring Extract Method access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Java Refactoring Extract Method safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Java Refactoring Extract Method use?

Java Refactoring Extract Method is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Java Refactoring Extract Method use?

About 873 tokens (SKILL.md is roughly 3.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Java Refactoring Extract Method?

Skills that share tags, products or a category with Java Refactoring Extract Method: Java Design Patterns Reference (decebals/claude-code-java, 751 stars), Bootui Java Development (jdubois/boot-ui, 307 stars), Go (inference-gateway/inference-gateway, 214 stars) and Java 21 Developer Guide for Grails (apache/grails-core, 2.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Java Refactoring Extract Method?

github (a GitHub organization, an official publisher) maintains it in github/awesome-copilot, which has 39,792 GitHub stars. The repository holds 417 skills in this directory. The repository was last updated on October 8, 2026.

Source: github/awesome-copilot on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.