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https://issues.apache.org/jira/browse/MJAVADOC-542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17957923#comment-17957923
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Olivier Lamy commented on MJAVADOC-542:
---------------------------------------
This project has moved from Jira to GitHub Issues. This issue was migrated to
[apache/maven-javadoc-plugin#830|https://github.com/apache/maven-javadoc-plugin/issues/830].
> Unsupported class file major version 55
> ---------------------------------------
>
> Key: MJAVADOC-542
> URL: https://issues.apache.org/jira/browse/MJAVADOC-542
> Project: Maven Javadoc Plugin (Moved to GitHub Issues)
> Issue Type: Bug
> Reporter: Mark Raynsford
> Assignee: Robert Scholte
> Priority: Major
> Fix For: 3.1.0
>
>
> It seems that when running the plugin on Java 11 (targeting Java 11 bytecode)
> on a project that includes a module descriptor, you'll get a:
> {code}
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:213) at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:154) at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:146) at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:117) at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:81) at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
> (SingleThreadedBuilder.java:56) at
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute
> (LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute
> (DefaultMaven.java:305) at org.apache.maven.DefaultMaven.doExecute
> (DefaultMaven.java:192) at org.apache.maven.DefaultMaven.execute
> (DefaultMaven.java:105) at org.apache.maven.cli.MavenCli.execute
> (MavenCli.java:954) at org.apache.maven.cli.MavenCli.doMain
> (MavenCli.java:288) at org.apache.maven.cli.MavenCli.main
> (MavenCli.java:192) at
> jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at
> jdk.internal.reflect.NativeMethodAccessorImpl.invoke
> (NativeMethodAccessorImpl.java:62) at
> jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
> (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke
> (Method.java:566) at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced
> (Launcher.java:289) at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
> (Launcher.java:415) at
> org.codehaus.plexus.classworlds.launcher.Launcher.main
> (Launcher.java:356)Caused by:
> org.apache.maven.plugin.PluginExecutionException: Execution attach-javadocs
> of goal org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:jar failed:
> Unsupported class file major version 55 at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:148) at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:208) at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:154) at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:146) at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:117) at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:81) at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
> (SingleThreadedBuilder.java:56) at
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute
> (LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute
> (DefaultMaven.java:305) at org.apache.maven.DefaultMaven.doExecute
> (DefaultMaven.java:192) at org.apache.maven.DefaultMaven.execute
> (DefaultMaven.java:105) at org.apache.maven.cli.MavenCli.execute
> (MavenCli.java:954) at org.apache.maven.cli.MavenCli.doMain
> (MavenCli.java:288) at org.apache.maven.cli.MavenCli.main
> (MavenCli.java:192) at
> jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at
> jdk.internal.reflect.NativeMethodAccessorImpl.invoke
> (NativeMethodAccessorImpl.java:62) at
> jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
> (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke
> (Method.java:566) at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced
> (Launcher.java:289) at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
> (Launcher.java:415) at
> org.codehaus.plexus.classworlds.launcher.Launcher.main
> (Launcher.java:356)Caused by: java.lang.IllegalArgumentException: Unsupported
> class file major version 55 at org.objectweb.asm.ClassReader.<init>
> (ClassReader.java:166) at org.objectweb.asm.ClassReader.<init>
> (ClassReader.java:148) at org.objectweb.asm.ClassReader.<init>
> (ClassReader.java:136) at org.objectweb.asm.ClassReader.<init>
> (ClassReader.java:237) at
> org.codehaus.plexus.languages.java.jpms.AsmModuleInfoParser.parse
> (AsmModuleInfoParser.java:115) at
> org.codehaus.plexus.languages.java.jpms.AsmModuleInfoParser.getModuleDescriptor
> (AsmModuleInfoParser.java:99) at
> org.codehaus.plexus.languages.java.jpms.LocationManager.resolvePaths
> (LocationManager.java:127) at
> org.apache.maven.plugins.javadoc.AbstractJavadocMojo.addJavadocOptions
> (AbstractJavadocMojo.java:4696) at
> org.apache.maven.plugins.javadoc.AbstractJavadocMojo.executeReport
> (AbstractJavadocMojo.java:2069) at
> org.apache.maven.plugins.javadoc.JavadocJar.doExecute (JavadocJar.java:190)
> at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.execute
> (AbstractJavadocMojo.java:1912) at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:137) at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:208) at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:154) at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:146) at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:117) at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:81) at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
> (SingleThreadedBuilder.java:56) at
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute
> (LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute
> (DefaultMaven.java:305) at org.apache.maven.DefaultMaven.doExecute
> (DefaultMaven.java:192) at org.apache.maven.DefaultMaven.execute
> (DefaultMaven.java:105) at org.apache.maven.cli.MavenCli.execute
> (MavenCli.java:954) at org.apache.maven.cli.MavenCli.doMain
> (MavenCli.java:288) at org.apache.maven.cli.MavenCli.main
> (MavenCli.java:192) at
> jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at
> jdk.internal.reflect.NativeMethodAccessorImpl.invoke
> (NativeMethodAccessorImpl.java:62) at
> jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
> (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke
> (Method.java:566) at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced
> (Launcher.java:289) at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
> (Launcher.java:415) at
> org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
> {code}
> Overriding the version of asm used to the 7.0 release that came out yesterday
> works around the issue.
> {noformat}
> <!-- Produce a javadoc jar -->
> <plugin>
> <artifactId>maven-javadoc-plugin</artifactId>
> <dependencies>
> <dependency>
> <groupId>org.ow2.asm</groupId>
> <artifactId>asm</artifactId>
> <version>7.0</version>
> </dependency>
> </dependencies>
> </plugin>
> {noformat}
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