[MJAVADOC-542] Unsupported class file major version 55

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.1.0
• Assignee: Robert Scholte
• Reporter: Mark Raynsford
• Created: 28/Oct/18 19:46
• Updated: 03/Mar/19 13:18
• Resolved: 24/Nov/18 11:06

Description

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:

    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)

Overriding the version of asm used to the 7.0 release that came out yesterday works around the issue.

      <!-- 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>

Issue Links

• is duplicated by: MJAVADOC-553 Unsupported class file major version 55
• is duplicated by: MJAVADOC-582 Getting "Unsupported class file major version 55" when trying to run Javadoc