java-language-syntax

Name: java-language-syntax
Availability: InStock
Author: rinto

Compare Java syntax availability across LTS baselines for baseline-safe code changes.

Updated Apr 9, 2026

Search Tags:#migration #syntax #java #baseline #pattern-matching #lts #records

Ready to run

npx skills add https://github.com/ririnto/sinon --skill java-language-syntax

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: java-language-syntax
Source: https://github.com/ririnto/sinon/tree/main/plugins/java/skills/java-language-syntax
Command: npx skills add https://github.com/ririnto/sinon --skill java-language-syntax

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Explain Java syntax availability across LTS baselines, compare expression forms between Java versions, rewrite code for older or newer targets, and choose foundational java.base package families. Use when the user asks about Java grammar, var, switch expressions, records, pattern matching, sealed classes, text blocks, unnamed patterns, or whether a syntax form compiles on a given Java baseline.

Core Features & Use Cases

LTS-aware syntax guidance for common language features and baseline constraints.
Baseline migration assistance with clear fallbacks and guidance on preview/withdrawn statuses.
Foundational java.base guidance to help select appropriate packages and standard-library boundaries.

Quick Start

Provide your target Java LTS baseline and ask for the most baseline-safe syntax recommendation.

Frequently Asked Questions about java-language-syntax

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I check if Java syntax like records or pattern matching compiles on a specific LTS baseline?▼

To check Java syntax availability, identify your target LTS baseline and compare expression forms to ensure baseline-safe code changes. This process distinguishes stable features from preview features, providing fallback guidance for unsupported syntax on older Java versions.

Can I use switch expressions and text blocks in Java 11?▼

Switch expressions and text blocks are not available in the Java 11 baseline. You must target Java 17 or later to use these syntax forms safely, and this guidance provides fallback patterns for rewriting code to compile on older LTS baselines.

What is the best way to migrate Java code to a newer LTS version without breaking syntax?▼

The best way to migrate Java code is to compare syntax availability across LTS baselines and apply baseline-safe code changes. This approach enforces target baseline identification and distinguishes stable versus preview features to prevent compilation failures.

How do I rewrite var and sealed classes for an older Java baseline?▼

To rewrite var and sealed classes for an older Java baseline, apply the provided fallback guidance to replace unsupported syntax. This ensures your code adheres to foundational java.base package boundaries and compiles correctly on the target version.

Does Java pattern matching require preview features to compile?▼

Java pattern matching availability depends on the specific LTS baseline, as some forms remain preview features while others are stable. Identifying the target baseline determines whether preview status applies and what fallback guidance is needed for compilation.