[MJAVADOC-604] javadoc:fix on JDK8: NullPointerException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Pending Closed
• Affects Version/s: 3.1.0
• Component/s: fix
• Environment: openjdk version "1.8.0_212" ; OpenJDK Runtime Environment (build 1.8.0_212-b04) ; OpenJDK 64-Bit Server VM (build 25.212-b04, mixed mode)
• Assignee: Robert Scholte
• Reporter: Graham Leggett
• Created: 09/May/19 10:31
• Updated: 24/Apr/21 17:33
• Resolved: 24/Apr/21 17:33

Description

While attempting to run javadoc:fix on JDK8, we get the following NullPointerException:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.1.0:fix (default-cli) on project x-db: Execution default-cli of goal org.apache.maven.plugins:maven-javadoc-plugin:3.1.0:fix failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.1.0:fix (default-cli) on project x-db: Execution default-cli of goal org.apache.maven.plugins:maven-javadoc-plugin:3.1.0:fix failed.
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-cli of goal org.apache.maven.plugins:maven-javadoc-plugin:3.1.0:fix failed.
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
	... 19 more
Caused by: java.lang.NullPointerException
	at org.apache.maven.plugins.javadoc.AbstractFixJavadocMojo.writeParamTag(AbstractFixJavadocMojo.java:2119)
	at org.apache.maven.plugins.javadoc.AbstractFixJavadocMojo.updateJavadocTags(AbstractFixJavadocMojo.java:2011)
	at org.apache.maven.plugins.javadoc.AbstractFixJavadocMojo.updateJavadocTags(AbstractFixJavadocMojo.java:1923)
	at org.apache.maven.plugins.javadoc.AbstractFixJavadocMojo.updateJavadocComment(AbstractFixJavadocMojo.java:1755)
	at org.apache.maven.plugins.javadoc.AbstractFixJavadocMojo.updateEntityComment(AbstractFixJavadocMojo.java:1621)
	at org.apache.maven.plugins.javadoc.AbstractFixJavadocMojo.fixMethodComment(AbstractFixJavadocMojo.java:1475)
	at org.apache.maven.plugins.javadoc.AbstractFixJavadocMojo.processFix(AbstractFixJavadocMojo.java:1089)
	at org.apache.maven.plugins.javadoc.AbstractFixJavadocMojo.execute(AbstractFixJavadocMojo.java:472)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
	... 20 more
[ERROR] 
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException