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Java 18 will be released in March 2022. It is not an LTS release and will be obsoleted at the release of Java 19 in September 2022.

Status: Rampdown Phase OneTwo

Page last updated: 2021-12-23, EA 29.

Schedule:

• 2021-12-09 Rampdown Phase One

• 2022-01-20 Rampdown Phase Two

• 2022-02-10 Initial Release Candidate

• 2022-02-24 Final Release Candidate

• 2022-03-22 General Availability

Resources:

• https://jdk.java.net/18/release-notes

• http://jdk.java.net/18/

• Schedule, status and features

Selected Changes Targeted to Java 18

• JEP 400: UTF-8 by Default

• JEP 408: Simple Web Server

• JEP 413: Code Snippets in Java API Documentation

• JEP 418: Internet-Address Resolution SPI

• JEP 420: Pattern Matching for switch (Second Preview)

• JEP 421: Deprecate Finalization for Removal

• JDK-8256425: Obsolete Biased Locking

• JDK-8275145: file.encoding system property has an incorrect value on Windows

  • “The initialization of file.encoding system property on non macOS platforms has been reverted to align with the behavior on/before JDK 11. This has been an issue especially on Windows where the system and user's locales are not the same.“

  • Implication: this issue is present in Java 17.

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