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142 Java Functional Programming

Checked
jabrena·vlatest·backend·Apache-2.0

Generates clean, efficient Java code using functional programming principles to solve backend development challenges.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add jabrena/plinth --skill 142-java-functional-programming -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

jabrena

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned jabrena/cursor-rules-java at 8ac07fb219.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
8ac07fb219
Manifest
skills/142-java-functional-programming/SKILL.md
Scanned
1 file, 76 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill enables AI agents to write Java code using functional programming paradigms. It facilitates the creation of concise, expressive, and maintainable code through techniques like lambda expressions, streams, and immutability. The skill allows for efficient data processing and transformation within a Java environment.

When to use it

  • Data Transformation: When needing to process large datasets in Java, such as cleaning or aggregating information from CSV files.
  • Event Handling: For building reactive systems where code needs to respond to asynchronous events using functional callbacks.
  • Parallel Processing: To leverage multi-core processors for faster execution of computationally intensive tasks by utilizing streams and parallel operations.
  • Code Refactoring: When modernizing existing Java codebases to improve readability and reduce boilerplate through the adoption of functional constructs.

Key capabilities

  • Lambda expressions
  • Streams API
  • Functional interfaces
  • Immutability
  • Parallel processing with streams

Example prompts

  • "Write a Java function using streams to filter a list of integers and return only even numbers."
  • "Create a lambda expression in Java that takes a string as input and returns its length."
  • "Generate a Java program using functional programming principles to calculate the sum of squares of elements in an array."

Tips & gotchas

  • Requires a basic understanding of Java syntax and object-oriented programming.
  • Functional programming can sometimes be less performant than imperative approaches for certain tasks, so profiling is recommended.