Guide for upgrading Java projects between major versions (8→11→17→21→25). Use when user says "upgrade Java", "migrate to Java 25", "update Java version", or when modernizing legacy projects.
How to install java-migration?
decebals/claude-code-java/java-migration
$npx -y skills add decebals/claude-code-java --skill java-migrationInstalls into the current project.
›Prefer a prompt? Paste this to your agent
Run `npx skills use "https://github.com/decebals/claude-code-java" --skill "decebals/claude-code-java/java-migration"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/decebals/claude-code-java" that are relevant to the current task. Run `npx skills add "https://github.com/decebals/claude-code-java"` and select the relevant skills, then follow their instructions.
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