Friends of OpenJDK Today
What's New?
- Book Review: “OpenJDK Migration for Dummies”
- Book Announcement: “OpenJDK Migration Guide for Dummies”
- Foojay.io at FOSDEM 2023 Trip Report
- Foojay Slack: bit.ly/join-foojay-slack
- How To Submit Your Next Article On Foojay.io
OpenJDK Migration Guide for Dummies
If you have a variety of specialized Java applications, created at different times and running on different JDK versions, you may have some anxiety about making the switch to OpenJDK. But, worry no more, Java Champion Simon Ritter has you covered in a new (free) book.
Download For Free
- JEP 430: String Templates (Preview)
- JEP 431: Sequenced Collections
- JEP 439: Generational ZGC
- JEP 440: Record Patterns
- JEP 441: Pattern Matching for switch
- JEP 442: Foreign Function & Memory API (Third Preview)
- JEP 443: Unnamed Patterns and Variables (Preview)
- JEP 444: Virtual Threads
- JEP 445: Unnamed Classes and Instance Main Methods (Preview)
- JEP 446: Scoped Values (Preview)
- JEP 448: Vector API (Sixth Incubator)
- JEP 449: Deprecate the Windows 32-bit x86 Port for Removal
- JEP 451: Prepare to Disallow the Dynamic Loading of Agents
- JEP 452: Key Encapsulation Mechanism API
- JEP 453: Structured Concurrency (Preview)
OpenJDK 21 LTS Released!
On September 19, 2023, the latest Long Term Support (LTS) release, OpenJDK 21 LTS was released. Get started...
Foojay — a place for friends of OpenJDK
Foojay is the central resource for the OpenJDK community’s daily information needs, the community platform for the OpenJDK ecosystem that brings together and helps developers everywhere.
OpenJDK Release Roadmap
Do you have Java, Kotlin, and other OpenJDK events, meetups, and conferences to share?
Add events to the Foojay.io calendar, no login or credentials needed.- M
- T
- W
- T
- F
- S
- S


Elastic Community Conference
Virtual & FreeApr 11, 2023
We're only two weeks into January, and we have already received 100 presentation submissions for ElasticCC — more than 20 in APJ (Asia-Pacific/Japan) and almost 40 in both EMEA (Europe/Middle East/Africa) and NASA (North/South America). That's an amazing start, and we still have room for some more. Since we know how hard it is ...
What’s Foojay?
Foojay is the central resource for the OpenJDK community’s daily information needs, the community platform for the OpenJDK ecosystem that brings together and helps developers everywhere.
