Build Teaql App
teaql/teaql-agent-kit
Build or change a TeaQL application in Java, Rust, Go, Swift, Python, C/.NET, or TypeScript, including Kotlin/JVM applications that consume Java-generated libraries.
Modern Java 21+ language standards including Records, Pattern Matching, and Virtual Threads.
Install Java Language
$ npx skills add HoangNguyen0403/agent-skills-standard --skill java-language -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard java-language --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/java/java-language .claude/skills/java-language && rm -rf skills-srcUse ~/.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/
Install the "java-language" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/java/java-language into .claude/skills/java-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "java-language", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/java/java-languageType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add HoangNguyen0403/agent-skills-standard --skill java-language -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard java-language --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/java/java-language .agents/skills/java-language && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "java-language" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/java/java-language into .agents/skills/java-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "java-language", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add HoangNguyen0403/agent-skills-standard --skill java-language -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard java-language --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/java/java-language .cursor/skills/java-language && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "java-language" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/java/java-language into .cursor/skills/java-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "java-language", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/HoangNguyen0403/agent-skills-standard.git --path skills/java/java-language--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add HoangNguyen0403/agent-skills-standard --skill java-language -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard java-language --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/java/java-language .gemini/skills/java-language && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "java-language" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/java/java-language into .gemini/skills/java-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "java-language", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install HoangNguyen0403/agent-skills-standard java-languageInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add HoangNguyen0403/agent-skills-standard --skill java-language -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/java/java-language .github/skills/java-language && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "java-language" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/java/java-language into .github/skills/java-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "java-language", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add HoangNguyen0403/agent-skills-standard --skill java-language -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard java-language --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/java/java-language .opencode/skills/java-language && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "java-language" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/java/java-language into .opencode/skills/java-language/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "java-language", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
java-language- GitHub stars
- 571
- Token cost
- ~616 tokens
- SKILL.md length
- 210 words
- Files
- 3 (incl. references)
- Skills in repo
- 211
- Repo updated
- First seen
- Licence
- MIT
At a glance
Modern Java 21+ language standards including Records, Pattern Matching, and Virtual Threads.
- Java language constructs
- SKILL.md covers Priority: P0 (CRITICAL), Implementation Guidelines, Anti-Patterns and References, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Java-to-Java upgrades
What it does
Java Language is an agent skill from HoangNguyen0403/agent-skills-standard. Modern Java 21+ language standards including Records, Pattern Matching, and Virtual Threads. Use for Java language constructs or Java-to-Java upgrades; defer Kotlin, tests, formatting/build tools, CompletableFuture, builder patterns, and isolated null-handling questions.
Its SKILL.md is about 620 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `evals/evals.json` and `references/example.md`).
It sits in Mobile, covering Android development. It works with Java and Kotlin. The repository describes itself as: A collection of Agent Skills Standard and Best Practice for Programming Languages, Frameworks that help our AI Agent follow best practies on frameworks and programming laguages. The licence is MIT.
When your agent uses it
- Java language constructs
- Java-to-Java upgrades
- Formatting/build tools
- CompletableFuture
Example prompts
- “/java-language”
What it can do on your machine
Read from SKILL.md and the folder at commit 266fd75. 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.
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 Language loads about 616 tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 71 tokens; SKILL.md has 210 words of instructions outside code blocks.
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 HoangNguyen0403/agent-skills-standard at commit 266fd75, republished under its MIT licence (© HoangNguyen0403). 210 words, ~616 tokens.
Download SKILL.mdSave it as
.claude/skills/java-language/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- java-language
- description
- Modern Java 21+ language standards including Records, Pattern Matching, and Virtual Threads. Use for Java language constructs or Java-to-Java upgrades; defer Kotlin, tests, formatting/build tools, CompletableFuture, builder patterns, and isolated null-handling questions.
Java Language Patterns
Priority: P0 (CRITICAL)
Implementation Guidelines
- Records: Use record for immutable DTOs/Value Objects. Records auto-generate equals, hashCode, toString. Avoid Lombok @Data on Pojos.
- Local Variables: Use
varfor inferred types. Explicitly type interface variables. - Switch: Use Switch Expressions (->) and Pattern Matching over complex if/else chains.
- Text Blocks: Use
"" (Text Blocks)for JSON, SQL, or multi-line strings. - Pattern Matching: Use
instanceofwith pattern binding:if (obj instanceof String s). - Sealed Classes: Use sealed interface/class with permits clause for domain-driven restricted hierarchies. Switch expressions then exhaustive switch (compiler-verified).
- Collections: Use
List.of(),Map.of(), andSet.of()for immutable collections. - Streams: Use
stream()pipelines for functional transformations. Use.toList()(Java 16+). - Optional: Utilize
Optional<T>for return types. Use.ifPresentOrElse()or.orElseThrow(). - Virtual Threads: Favor
Executors.newVirtualThreadPerTaskExecutor()for I/O-heavy workloads.
Anti-Patterns
- No Nulls: Return Optional or empty collections; avoid null parameters.
- No Raw Types: Always use generics; never use raw List or Map.
- No Old Switch: Use switch expressions (->); avoid fall-through.
- No Manual get/set: Use Records or value objects instead.
- No synchronized blocks: Use java.util.concurrent or Virtual Threads instead.
References
Canonical response anchors
When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant:
- DTOs/Value Objects
- Lombok
- exhaustive switch
- if/else chains
- sealed interface/class
© HoangNguyen0403, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 2 other files (references) in skills/java/java-language of HoangNguyen0403/agent-skills-standard.
- SKILL.md
- evals/evals.json
- references/example.md
Open the folder on GitHubat commit 266fd75
Compare with similar skills
Java Language next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Java Language this skillHoangNguyen0403/agent-skills-standard | 571 | — | ~616 | Automated safety check: Pass | MIT | |
| Build Teaql Appteaql/teaql-agent-kit | 2.8k | — | ~4.6k | Automated safety check: Pass | MIT | |
| Android Maps Ktxgooglemaps/android-maps-ktx | 360 | — | ~897 | Automated safety check: Pass | Apache-2.0 | |
| Code StyleJetBrains/intellij-community | 21k | — | ~795 | Automated safety check: Pass | Custom licence | |
| Android Audio E2Ehyochan/react-native-nitro-sound | 961 | — | ~814 | Automated safety check: Pass | MIT | |
| Stabilizing Compose TypesrosuH/EasyWatermark | 1.9k | 1 repos | ~4.4k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Android Maps Ktx
googlemaps/android-maps-ktx
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.
- Official
Code Style
JetBrains/intellij-community
Apply IntelliJ Kotlin and Java code style when writing or reviewing.
Android Audio E2E
hyochan/react-native-nitro-sound
Build and run device-backed Android end-to-end checks for react-native-nitro-sound permissions, recording, playback, listeners, pause/resume, seek, speed, audio focus, lifecycle behavior, and rapid…
Stabilizing Compose Types
rosuH/EasyWatermark
A skill your agent uses to fix unstable Jetpack Compose types once a stability diagnosis has identified them.
Project Binding Adapter From Source
afkT/DevUtils
根据用户给出的 Java/Kotlin 工具类或 View 相关源码，设计并实现 androidx.databinding.BindingAdapter。
More from HoangNguyen0403/agent-skills-standard
All 211 skills in this repoSubagent-Driven Development
HoangNguyen0403/agent-skills-standard
Runs a multi-task implementation plan by sending each task to a fresh implementer subagent, reviewing it independently, then reviewing the whole branch.
draw.io Architecture Diagramming
HoangNguyen0403/agent-skills-standard
Draws architecture diagrams as editable draw.io files from a JSON spec, with a fixed house style, one C4 level per diagram and evidence-tagged shapes.
Android Navigation 3 Guide
HoangNguyen0403/agent-skills-standard
Implements and migrates to Jetpack Navigation 3 in Compose: NavDisplay, typed route objects, a state-list back stack, deep links, multiple back stacks and dialog scenes.
Angular HttpClient Standards
HoangNguyen0403/agent-skills-standard
Sets rules for Angular HTTP code: functional interceptors, typed requests, services that own every call, and httpResource for reactive data loading in Angular 17+.
Angular Tooling
HoangNguyen0403/agent-skills-standard
Angular CLI usage, code generation, build configuration, and bundle optimization.
Common Code Review
HoangNguyen0403/agent-skills-standard
Conduct high-quality, persona-driven code reviews. An agent skill from HoangNguyen0403/agent-skills-standard.
Related
Categories
Questions about Java Language
What does Java Language do?
Modern Java 21+ language standards including Records, Pattern Matching, and Virtual Threads. Java Language is an agent skill from HoangNguyen0403/agent-skills-standard. Modern Java 21+ language standards including Records, Pattern Matching, and Virtual Threads.
When should I use Java Language?
Java Language fits situations like: java language constructs; java-to-Java upgrades; formatting/build tools; completableFuture.
How do I install Java Language in Claude Code?
Run `npx skills add HoangNguyen0403/agent-skills-standard --skill java-language -a claude-code`. Or copy the skill folder (skills/java/java-language in HoangNguyen0403/agent-skills-standard) into .claude/skills/java-language in your project. Claude Code loads it when a task matches its description.
How do I install Java Language in Codex?
Run `npx skills add HoangNguyen0403/agent-skills-standard --skill java-language -a codex`. Or copy the skill folder (skills/java/java-language in HoangNguyen0403/agent-skills-standard) into .agents/skills/java-language in your project. Codex loads it when a task matches its description.
Can I use Java Language 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 HoangNguyen0403/agent-skills-standard --skill java-language -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-language, .gemini/skills/java-language, .github/skills/java-language and .opencode/skills/java-language in your project.
What does Java Language need to run?
SKILL.md names no scripts, command-line tools or credentials: Java Language is instructions for the agent only.
Does Java Language 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 Language 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 Language use?
Java Language 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 Language use?
About 616 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 505 tokens, read only when the agent opens those files.
What are the alternatives to Java Language?
Skills that share tags, products or a category with Java Language: Build Teaql App (teaql/teaql-agent-kit, 2.8k stars), Android Maps Ktx (googlemaps/android-maps-ktx, 360 stars), Code Style (JetBrains/intellij-community, 21k stars) and Android Audio E2E (hyochan/react-native-nitro-sound, 961 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Java Language?
HoangNguyen0403 (a GitHub user) maintains it in HoangNguyen0403/agent-skills-standard, which has 571 GitHub stars. The repository holds 211 skills in this directory. The repository was last updated on October 9, 2026.
Source: HoangNguyen0403/agent-skills-standard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.