Episode 2 “Java 15 is Here!” [AtA]

David Delabassee discusses the latest Java release, Java 15, with Mikael Vidstedt, Director of JVM Development.

Show Notes

New or updated Java language feature, Java SE API feature and JDK API

• Sealed Classes (Preview)

• Hidden Classes

• Reimplement the Legacy DatagramSocket API

• Text Blocks

• Foreign-Memory Access API (Second Incubator)

• Records (Second Preview)

• Pattern Matching for instanceof (Second Preview)

Garbage Collectors

• ZGC: A Scalable Low-Latency Garbage Collector

• Shenandoah: A Low-Pause-Time Garbage Collector

• JDK 15 G1/Parallel GC changes

• Improving G1 out-of-the-box performance

Deprecation & Removal

• Remove the Solaris and SPARC Ports

• Remove the Nashorn JavaScript Engine

Security

• Edwards-Curve Digital Signature Algorithm (EdDSA)

• Support for certificate_authorities Extension

Other Features (JDK 14 & JDK 15)

• Cgroups v2: Container awareness

• JFR Event Streaming

OpenJDK projects discussed in this episode

• ZGC

• Project Loom

• Project Panama

• Project Amber

• Project Valhalla

Additional Resources

• dev.java: the destination for Java developers

• OpenJDK: the place to collaborate on the Java Platform and related projects

• Oracle Java: the #1 programming language and development platform

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