For now the easiest way to get started is using code.quarkus.io or use the Quarkus CLI:

Mind you that at this stage, while all the core extensions are available, only parts of the Quarkus platform is present. Not all extensions have yet migrated to Jakarta packages (e.g. Camel Quarkus or Kogito are not yet available).

For existing applications where all extensions are available, we have an early OpenRewrite recipe that you can try.

There is a one-liner that attempts to do it automatically using a JBang script:

For Linux:

For Windows:

You can also do it manually by downloading the OpenRewrite recipe and apply it manually with the following Maven command:

Once this has been run your project should have its dependencies and source code updated to use Quarkus 3.

If it does not work for you, it could be we missed something or you are using extensions not yet supporting Quarkus 3.

Let us know in either case so we can together improve the migration script.

We value your feedback a lot so please report bugs, ask for improvements…​ Let’s build something great together!

If you are a Quarkus user or just curious, don’t be shy and join our welcoming community:

• provide feedback on GitHub;

• craft some code and push a PR;

• discuss with us on Zulip and on the mailing list;

• ask your questions on Stack Overflow.