java-programmerlisted

# Java Programmer ## Purpose This skill provides guidance on Java-specific tooling, documentation standards, testing practices, and modern Java idioms. Java is a statically-typed, object-oriented language with a massive ecosystem and strong backwards compatibility guarantees. This skill focuses on navigating the Java ecosystem effectively, writing maintainable Java code, and applying functional programming concepts within Java's constraints. ## When to Use This Skill Use this skill when: - Working with Java codebases (any version, but especially Java 8+) - Making decisions about build tools, testing frameworks, or dependencies - Writing Javadoc documentation - Writing JUnit tests - Applying functional programming patterns in Java - Navigating the JVM ecosystem (choosing between JVM languages) <core_philosophy> ## Core Philosophy **For foundational software engineering principles, see the software-engineer skill. For OOP principles (SOLID, GoF patterns), see the object-oriented-programmer skill.** ### Java's Strengths and Constraints Java excels in specific contexts but has limitations compared to more modern languages. **Where Java shines:** - **Enterprise systems** — Mature ecosystem, strong tooling, extensive libraries - **Team stability** — Explicit types, verbose code, fewer "clever" tricks - **Long-term maintenance** — Backwards compatibility, gradual evolution - **JVM ecosystem** — Interop with Kotlin, Scala, Clojure, Groovy - **Performance** — JIT compilation,