Java · Refactoring

A practical Java reference for Builder, Factory, Singleton, Strategy, Observer and other patterns, with a table matching problems to patterns.

decebals/claude-code-java

Provides idiomatic Kotlin extension (KTX) patterns, reactive Flow event streams, and multi-subscriber shareIn rules for Google Maps SDK for Android and its Utility Library.

googlemaps/android-maps-ktx

A skill your agent uses when implementing, debugging, refactoring, or testing existing BootUI Java code, including framework-neutral engine logic, Spring MVC and WebFlux adapters, Quarkus runtime…

jdubois/boot-ui

Idiomatic Go - package and interface design, error wrapping, table-driven tests, generics, the modern standard library (slices/maps/cmp/errors.Join), current syntax, and logging discipline.

inference-gateway/inference-gateway

A skill your agent uses to produce a risk-based refactor + test plan for recently-changed code on a diff/branch/PR by computing CRAP (complexity × untested) on changed methods.

swingerman/engineer

Guide for writing modern Java 21 in a Grails and Groovy codebase: records, sealed classes, pattern matching, text blocks and how Java works alongside Groovy.

apache/grails-core

Maintain and extend the arangodb/spring-data repository. An agent skill from arangodb/spring-data.

arangodb/spring-data

IntelliJ IDEA MCP for Java code analysis, testing, refactoring, and project navigation.

dtprj/dongting

Code refactoring expert for improving code quality, readability, maintainability, and performance.

yennanliu/CS_basics

Implement and review Java code changes for Micronaut framework repositories using maintainer standards, including JSpecify null-safety conventions.

micronaut-projects/micronaut-openapi

Enforces coding best practices: deep-read before modify, LSP-first navigation, TDD red-green-refactor, minimal changes, self-review, verification.

KaimingWan/oh-my-kiro

Map of the EDT-MCP plugin's target architecture — where the shared helpers live, the layering rules, and the canonical way to do project/metadata/code resolution.

DitriXNew/EDT-MCP

Code review automation for TypeScript, JavaScript, Python, Go, Swift, Kotlin, C, .NET, Java, C, C++, Rust, Ruby, PHP, and Dart/Flutter.

alirezarezvani/claude-skills

Design, implement, and refactor Ports & Adapters systems with clear domain boundaries, dependency inversion, and testable use-case orchestration across TypeScript, Java, Kotlin, and Go services.

yamcodes/arkenv

Perform housekeeping tasks to manage the complexity of the code base.

axelixlabs/axelix

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

github/awesome-copilot

Refactoring using Remove Parameter in Java Language. An agent skill from github/awesome-copilot.

github/awesome-copilot

Hexagonal architecture layering for Java services with strict boundaries.

Gentleman-Programming/Gentleman-Skills

A skill your agent uses when Java design, refactoring, or implementation tradeoffs should be evaluated with Kent Beck's simple design rules, including passes the tests, reveals intention, has no…

jabrena/plinth

A skill your agent uses when reviewing, improving, or refactoring Java object-oriented design, including applying SOLID, DRY, or YAGNI; improving classes and interfaces; correcting encapsulation…

jabrena/plinth

A skill your agent uses when you need to review, improve, or refactor Java code for generics quality — including avoiding raw types, applying the PECS (Producer Extends Consumer Super) principle for…

jabrena/plinth

A skill your agent uses when you need to refactor Java code to adopt modern Java features (Java 8+) — including migrating anonymous classes to lambdas, replacing Iterator loops with Stream API…

jabrena/plinth

A skill your agent uses when you need to apply functional programming principles in Java — including writing immutable objects and Records, pure functions, functional interfaces, lambda expressions…

jabrena/plinth

A skill your agent uses when you need to apply data-oriented programming best practices in Java — including separating code (behavior) from data structures using records, designing immutable data…

jabrena/plinth

A skill your agent uses when you need to refactor Java code for high performance — including memory/allocation reduction, CPU hot-path optimization, and syntax/API/control-flow improvements.

jabrena/plinth

A skill your agent uses when you need to refactor Java code based on trusted profiling analysis findings — including reviewing repository-owned or maintainer-sanitized…

jabrena/plinth

A skill your agent uses when you need to verify Java performance optimizations by comparing profiling results before and after refactoring — including baseline validation, post-refactoring report…

jabrena/plinth

A skill your agent uses when you need to generate or improve Java project documentation — including README.md files, package-info.java files, and Javadoc enhancements — through a modular, step-based…

jabrena/plinth

Detects and safely removes unused code (imports, functions, classes) across multiple languages.

aiskillstore/marketplace

A skill your agent uses when writing, reviewing or refactoring modern Java (21+, 25 LTS) — records and sealed interfaces as algebraic data types, exhaustive pattern-matching switch over instanceof…

ericrisco/rsc-harness

Automatically generate regression tests for Java codebases by analyzing changes between old and new code versions.

ArabelaTso/Skills-4-SE

Modern Java (17/21+ LTS) idioms: records, sealed classes, pattern matching switch, Optional hygiene, streams, and JUnit 5 testing.

irahardianto/awesome-agv

Update Java test classes and methods to work with new code versions after refactoring or modifications.

ArabelaTso/Skills-4-SE