Want to understand the difference between an Oracle JDK and an OpenJDK from the AdoptOpenJDK community?
Why OpenJDK with Eclipse Open J9 is the best Java™ runtime, with fast startup, small footprint and great performance.
OpenJ9 is a drop-in replacement for the Hotspot VM. Learn about the slight runtime differences and get migration hints.
Boost startup speeds with shared classes caching, dynamic AOT and more.
Learn about garbage collection tradeoffs and tuning with OpenJ9.
IBM joins Eclipse Adoptium and offers free certified JDKs with Eclipse OpenJ9.