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Java 13 compile but not run? [message #1818240]

Tue, 10 December 2019 15:02

Eclipse User

Using Eclipse 4.7.3, I installed OpenJDK 13, set it as the default compiler, and built my project. The Java Compliance Level is still set at Java 1.8.
It all builds fine, but when I try to run it, Eclipse tells me:
"jre not compatible with workspace .class file compatibility: 1.8"

I thought newer java could run older java class files?

Re: Java 13 compile but not run? [message #1818245 is a reply to message #1818240]

Tue, 10 December 2019 16:04

Eclipse User

Eclipse 4.7.3 was released in Feb 2018. It cannot recognize the version of your JRE (Sep 2019) and hence it doesn't know it's compatible.

Re: Java 13 compile but not run? [message #1818270 is a reply to message #1818240]

Wed, 11 December 2019 04:37

Eclipse User

Hello,

Using Version: 2019-09 R (4.13.0) on windows 10

Java openjdk-13.0.1_windows-x64_bin.zip

Settings:

index.php/fa/36953/0/

Works just fine.

Regards.

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