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Ondro Mihályi @OmniFishEE
How to Easily Upgrade to
Jakarta EE 10
Javax to Jakarta Prefix without a Hassle
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Ondro Mihályi @OmniFishEE
Who am I?
Java Champion
Czech JUG lead
(CZJUG)
Jakarta EE
specifications
committer
Director at
OmniFish
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Ondro Mihályi @OmniFishEE
What’s new in Jakarta EE 9?
javax.* → jakarta.*
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Ondro Mihályi @OmniFishEE
So what?
Search & Replace and we’re done...
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Ondro Mihályi @OmniFishEE
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Ondro Mihályi @OmniFishEE
Or
not?
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Ondro Mihályi @OmniFishEE
It’s not that easy
some javax
packages
not renamed
XML
namespaces
renamed
properties
renamed
javax in
dependencies
javax
transitive
dependencies
APIs dropped in
Jakarta EE 10
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Ondro Mihályi @OmniFishEE
Impact of Jakarta EE 9
javax.* → jakarta.*
●
App servers
●
Tomcat, Jetty, …
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Spring 6
●
SpringBoot 3
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Quarkus 3
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The list goes on...
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Ondro Mihályi @OmniFishEE
A lot of mess...
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Ondro Mihályi @OmniFishEE
Is there an easier way?
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Ondro Mihályi @OmniFishEE
Automate!
Eclipse
Transformer
OpenRewrite
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Ondro Mihályi @OmniFishEE
Eclipse Transformer
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Ondro Mihályi @OmniFishEE
OpenRewrite
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Ondro Mihályi @OmniFishEE
Transformer + OpenRewrite = Best Results
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Ondro Mihályi @OmniFishEE
1st step: Transformer for source code
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Ondro Mihályi @OmniFishEE
2nd step: OpenRewrite for source code
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Ondro Mihályi @OmniFishEE
What about dependencies?
Newer version with
jakarta.*
No version with
jakarta.*
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Ondro Mihályi @OmniFishEE
Upgrade dependencies
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Supports jakarta.* → upgrade version
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Provides javax.* and jakarta.* variant
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“jakarta” classifier
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different artifact name
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Ondro Mihályi @OmniFishEE
Transform dependencies
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Doesn't support jakarta.* (yet)
→ Transform JAR with Transformer
→ With all transient dependencies
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Ondro Mihályi @OmniFishEE
Finally!
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Ondro Mihályi @OmniFishEE
Questions
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Ondro Mihályi @OmniFishEE
Demo
Repository with source code of demo
projects:
https://github.com/OmniFish-EE/Presentation-
Upgrade-To-Jakarta-EE-10
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Ondro Mihályi @OmniFishEE
Resources
●
Eclipse Transformer
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OpenRewrite
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Guide at the OmniFish blog
●
https://omnifish.ee
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Ondro Mihályi @OmniFishEE
Thank you!
Jakarta EE
Consultancy
(migrations, tuning)
Jakarta EE
Application
Development
GlassFish
Server
Support
Jakarta EE
Training
omnifish.ee
OmniFish - Jakarta EE Consulting & Support