java-code

java-code is a skill for Claude Code, Codex from DongDuong2001/pudo-code-system. It costs 12 tokens per session (152 once invoked), scanned A, original, MIT.

A guide for developing Java applications and managing the Java Virtual Machine, including enterprise frameworks, memory, garbage collection, and concurrency.

In plain words
What is it for?
Use it with Spring Boot, Jakarta EE, or core Java for object-oriented design, JVM tuning, modern Java features, and safe handling of files or connections.
Why use it?
It helps apply consistent design and resource-management practices while reducing common reliability and concurrency problems.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it with Spring Boot, Jakarta EE, or core Java for object-oriented design, JVM tuning, modern Java features, and safe handling of files or connections.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dongduong2001/pudo-code-system/java
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add DongDuong2001/pudo-code-system --skill java
Clone the repo
git clone --depth 1 https://github.com/DongDuong2001/pudo-code-system

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for java-code

README.md
[![agentmods](https://agentmods.dev/badge/skills/dongduong2001/pudo-code-system/java/github.svg)](https://agentmods.dev/skills/dongduong2001/pudo-code-system/java)
Your own site
<a href="https://agentmods.dev/skills/dongduong2001/pudo-code-system/java"><img src="https://agentmods.dev/badge/skills/dongduong2001/pudo-code-system/java/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for java-code

Your own site · 80×15
<a href="https://agentmods.dev/skills/dongduong2001/pudo-code-system/java"><img src="https://agentmods.dev/badge/skills/dongduong2001/pudo-code-system/java.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 152 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00012 $0.00152
Opus 5.5 $0.00005 $0.00061
Sonnet 5.5 $0.00002 $0.00030
Haiku 4.5 $0.00001 $0.00015

Measured 1mo ago against content hash 194303352c49, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

java-code scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/code/java/SKILL.md · 20 lines

What it actually says

Java Code Skill

This skill is specialized for Java and JVM-based enterprise development.

When to use this skill

  • When working with Spring Boot, Jakarta EE, or core Java.
  • When applying Object-Oriented Programming (OOP) design patterns.
  • When managing memory, garbage collection, and concurrency in JVM.

Guidelines

  • Follow SOLID principles and GoF design patterns.
  • Prefer immutability and final fields where possible to reduce concurrency issues.
  • Leverage modern Java features (Records, Streams, Pattern Matching, Switch Expressions).
  • Ensure resource streams (files, connections) are managed safely (e.g., using try-with-resources).
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 20 lines · 12 tokens per session scan A 194303352c49

Subscribe to this mod's changes

java-code is a skill published in the GitHub repository DongDuong2001/pudo-code-system (5 stars, last pushed 11d ago), licensed MIT. It adds 12 tokens to every session and 152 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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