Problems analyzing with java 8

SonarQube Server / Community Build
1

Hello,

we have a sonar Developer Edition Version 8.2 (build 32929) server, we are trying to migrate to Developer Edition Version 10.5

We have several types of repositories that are being tested.
We have a problem with our java projects, they are using java8 because our code is not updated to java 17, the plugin we use from gradle to sonar is:
id "org.sonarqube" version "2.6.2".

With that version, using java 8 and sonar Developer EditionVersion 8.2 everything works fine.

Now, with sonar 10.5 we get a message:
Caused by: java.lang.UnsupportedClassVersionError: org/sonar/batch/bootstrapper/EnvironmentInformation has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0

We have seen that the solution is to use a higher java version java 17, but we cannot upgrade the project to java 17 right now.

Is there any version of the gradle plugin that avoids this error?

Should we do the analysis using sonar-scanner tool instead of using the gradle plugin since the gradle plugin should be used with java 17?

Regards
Eloy

2

Hey there.

Indeed, analyzing code with SonarQube 10.5 requires using Java 17, but only for the scanning portion.

This means you can build with Java 8, switch the JVM used, and then analyze with Java 17.

You can check out the docs here.

While you’re at it, you should probably update the SonarScanner for Gradle to a recent version.