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Upgrade a Java project to a newer JDK v1.0.0

Use this resource to upgrade a Java project to a newer JDK and adopt its new features

New

  • 420 downloads
  • 128 likes
  • 165 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install java-version-upgrade-guide

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent detects the Java version in your build files, then loads only the guide for that migration. It guides you step by step and suggests new language features to adopt safely. For a fully automated end-to-end upgrade, it points to the modernize-java plugin.

Mostly picked by

Updated November 2, 2026

Card for the “Upgrade a Java project to a newer JDK” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

Similar resources

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What you get

  • references/java-11-to-17.md, java-17-to-21.md, java-21-to-25.md: per-version guides
  • references/upstream-sources.md: official sources to read before upgrading
  • SKILL.md: upgrade workflow and rules to follow

Good fit for

  • Your project still runs on Java 11 or 17 and must move up
  • You want to modernize code with records and pattern matching

Not for

    Tags

    • java
    • migration
    • jdk
    • modernization

    About

    You say

    “Upgrade this Maven project from Java 17 to Java 21 and adopt virtual threads where it makes sense.”

    Card for the “Upgrade a Java project to a newer JDK” skill

    Skill published by github under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to upgrade a Java project to a newer JDK and adopt its new features
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/java-11-to-17.md21.5 KB
    • references/java-17-to-21.md13.7 KB
    • references/java-21-to-25.md9.7 KB
    • references/upstream-sources.md2.3 KB
    • SKILL.md4.8 KB

    Origin and licence

    Listed unmodified

    Author
    github
    Source
    github.com/github/awesome-copilot/tree/0fe6545b950671641b2b14b44eb56678fea6c6b4/skills/java-upgrade
    Licence
    MIT

    Notice

    « java-upgrade » (github, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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