Java 21 supported?

[Ulrik Lejon]

Hi,

According to https://www.jacoco.org/jacoco/trunk/doc/changes.html Release 0.8.9 includes experimental support for Java 21 class files. 
I just tried using version 0,8.10 of the jacoco-maven-plugin in my project but getting an error (Unsupported class file major version 65).

How do I use the experimental support for Java 21?

[Marc Hoffmann]

Hi,

please provide the full stack trace of the error (run Maven with -X).

Thanks,

-marc

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[Ulrik Lejon]

Hi,

Here is the full stack trace:

[INFO] diff content saved to '/code/target/site/diff.patch'
[DEBUG] Loading exec data /code/target/jacoco-merged
[DEBUG] Found modified file: b/.githooks
[DEBUG] Found modified file: /dev/null
[DEBUG] Found modified file: b/Jenkinsfile
[DEBUG] Found modified file: b/pom.xml
[DEBUG] File b/.githooks has 2 modified lines
[DEBUG] File b/Jenkinsfile has 1 modified lines
[DEBUG] File b/pom.xml has 10 modified lines
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  6.826 s
[INFO] Finished at: 2023-09-26T12:22:55+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Error while analyzing /code/target/classes/Role.class. Unsupported class file major version 65
java.io.IOException: Error while analyzing /code/target/classes/Role.class.
    at org.jacoco.core.internal.analysis.FilteringAnalyzer.analyzerError (FilteringAnalyzer.kt:89)
    at org.jacoco.core.internal.analysis.FilteringAnalyzer.analyzeClass (FilteringAnalyzer.kt:28)
    at org.jacoco.core.analysis.Analyzer.analyzeClass (Analyzer.java:158)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:195)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:228)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at com.form.coverage.report.ReportGenerator.analyzeStructure (ReportGenerator.kt:81)
    at com.form.coverage.report.ReportGenerator.create (ReportGenerator.kt:55)
    at com.form.coverage.report.ReportGenerator.create (ReportGenerator.kt:37)
    at com.github.surpsg.DiffCoverageMojo.execute (DiffCoverageMojo.kt:62)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:328)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:316)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:174)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:75)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:162)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:159)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:906)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:283)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:206)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:283)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:226)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:407)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:348)
Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 65
    at org.objectweb.asm.ClassReader.<init> (ClassReader.java:199)
    at org.objectweb.asm.ClassReader.<init> (ClassReader.java:180)
    at org.objectweb.asm.ClassReader.<init> (ClassReader.java:166)
    at org.jacoco.core.internal.instr.InstrSupport.classReaderFor (InstrSupport.java:280)
    at org.jacoco.core.internal.analysis.FilteringAnalyzer.analyzeClass (FilteringAnalyzer.kt:34)
    at org.jacoco.core.internal.analysis.FilteringAnalyzer.analyzeClass (FilteringAnalyzer.kt:26)
    at org.jacoco.core.analysis.Analyzer.analyzeClass (Analyzer.java:158)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:195)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:228)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at org.jacoco.core.analysis.Analyzer.analyzeAll (Analyzer.java:223)
    at com.form.coverage.report.ReportGenerator.analyzeStructure (ReportGenerator.kt:81)
    at com.form.coverage.report.ReportGenerator.create (ReportGenerator.kt:55)
    at com.form.coverage.report.ReportGenerator.create (ReportGenerator.kt:37)
    at com.github.surpsg.DiffCoverageMojo.execute (DiffCoverageMojo.kt:62)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:328)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:316)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:174)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:75)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:162)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:159)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:906)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:283)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:206)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke (DirectMethodHandleAccessor.java:103)
    at java.lang.reflect.Method.invoke (Method.java:580)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:283)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:226)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:407)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:348)

[Ulrik Lejon]

Might have been premature to post this question here, since I use JaCoCo via a third party maven plugin. Looks like that plugin needs to update to JaCoCo 0.8.10.

Cheers

Ulrik

[Marc Hoffmann]

Hi,

this indicates you’re actually using a JaCoCo version older than 0.8.8. Since 0.8.8 we print the JaCoCo version with the exception message (which is missing in your stack trace).

For Java 21 support you need at least 0.8.9.

Regards,

-marc

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