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Java 20 will be Java 20 was released in March 2023. It is not an LTS release and will be obsoleted at the release of Java 21 in September 2023.

Status: Initial Release Candidate

Page last updated: 2023-02-17, EA 36.

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Schedule:

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2022-12-08 Rampdown Phase One

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2023-01-19 Rampdown Phase Two

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2023-02-09 Initial Release Candidate

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2023-02-23 Final Release Candidate

General Availability

Resources:

• https://jdk.java.net/20/release-notes

• http://jdk.java.net/20/

• Schedule, status and features

Selected Changes Targeted to Java 20

• JDK-8249627: Thread.suspend/resume changed to throw UnsupportedOperationException

• JDK-8284842: Support Unicode 15.0

• JDK-8289610: Thread.Stop changed to throw UnsupportedOperationException

• https://bugs.openjdk.org/browse/JDK-8294241

• https://bugs.openjdk.org/browse/JDK-8297030
  ”In this release the default idle connection timeout value for the HTTP/1.1 and HTTP/2 connections created by the java.net.http.HttpClient has been reduced from 1200 seconds to 30 seconds.”

•  https://openjdk.org/jeps/429

• JEP 432: Record Patterns (Second Preview)

• JEP 433: Pattern Matching for switch (Fourth Preview)

•  https://openjdk.org/jeps/436

• https://openjdk.org/jeps/437

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