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Java 20, JRE System Library, Maven [message #1859129]

Sun, 14 May 2023 00:56

Tom Kratzke

Messages: 4
Registered: June 2011

Junior Member

I'm using Java 20 with Maven, and my JRE Runtime Library keeps reverting to JavaSE-19.

I am using Eclipse Version: 2023-03 (4.27.0), Build id: 20230309-1520, and:
Eclipse JDT (Java Development Tools) Source Patch with Java 20 support for 2023-03 development stream 1.2.300.v20230322-1359_BETA_JAVA20.

Java 20 is the only Jdk or Java that I have installed, JAVA_HOME is set to the jdk-20 directory, compliance is set to 20, and I have edited the build path's runtime library to use the execution environment, which I have set to JavaSE-20.

But when I update the Maven project, the runtime library reverts to JavaSE-19.

A little more detail: I'm using Maven from within Eclipse, and I started the Maven project with apache's maven-archetype-quickstart. I added the line <maven.compiler.release>20</maven.compiler.release>
into my properties section within my pom.xml, did a "Maven-Update Project" and JavaSE-19 shows up as my runtime library.

Am I missing something?

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Re: Java 20, JRE System Library, Maven [message #1859130 is a reply to message #1859129]

Sun, 14 May 2023 03:20

Eitan Rosenberg

Messages: 143
Registered: October 2018

Senior Member

Hi,

There was a bug, see:
https://github.com/eclipse-m2e/m2e-core/issues/1326

The remedy at the moment is to use:
Java 20 support now available from:
https://download.eclipse.org/technology/m2e/snapshots/latest/
I use it once to fix the problem, and it is ok now.

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