[ 
https://issues.apache.org/jira/browse/MJAVADOC-793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Gary D. Gregory updated MJAVADOC-793:
-------------------------------------
    Description: 
Plugin throws {{NullPointerException}} when running {{{}javadoc:javadoc{}}}.

See:
 * Failing PR: https://github.com/apache/commons-compress/pull/528
 * Build log: 
[https://github.com/apache/commons-compress/actions/runs/9113449616/job/25054982405?pr=528]

Or:
 # git clone [https://gitbox.apache.org/repos/asf/commons-compress.git]
 # git checkout 542cc5a602a9128932e3fb75503383e481141e7e
 # Edit pom.xml and set the parent POM to version 70
 # Run 'mvn javadoc:javadoc' causes:

{noformat}
[INFO] --- javadoc:3.6.3:javadoc (default-cli) @ commons-compress ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  8.434 s
[INFO] Finished at: 2024-05-16T09:36:02-04:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc (default-cli) on 
project commons-compress: Execution default-cli of goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc failed: Cannot 
invoke "String.length()" because "text" is null -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc (default-cli) on 
project commons-compress: Execution default-cli of goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc failed: Cannot 
invoke "String.length()" because "text" is null
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 
(MojoExecutor.java:333)
    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.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:77)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:568)
    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: org.apache.maven.plugin.PluginExecutionException: Execution 
default-cli of goal org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc 
failed: Cannot invoke "String.length()" because "text" is null
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:133)
    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.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:77)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:568)
    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.NullPointerException: Cannot invoke "String.length()" 
because "text" is null
    at org.codehaus.plexus.util.xml.pull.MXSerializer.writeElementContent 
(MXSerializer.java:912)
    at org.codehaus.plexus.util.xml.pull.MXSerializer.text 
(MXSerializer.java:780)
    at 
org.apache.maven.plugins.javadoc.options.io.xpp3.JavadocOptionsXpp3Writer.writeJavadocOptions
 (JavadocOptionsXpp3Writer.java:287)
    at 
org.apache.maven.plugins.javadoc.options.io.xpp3.JavadocOptionsXpp3Writer.write 
(JavadocOptionsXpp3Writer.java:81)
    at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.buildJavadocOptions 
(AbstractJavadocMojo.java:6017)
    at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.executeReport 
(AbstractJavadocMojo.java:1870)
    at org.apache.maven.plugins.javadoc.JavadocReport.generate 
(JavadocReport.java:135)
    at org.apache.maven.plugins.javadoc.JavadocReport.doExecute 
(JavadocReport.java:304)
    at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.execute 
(AbstractJavadocMojo.java:1825)
    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.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:77)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:568)
    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)
{noformat}

My local env:
{noformat}
Apache Maven 3.9.6 (bc0240f3c744dd6b6ec2920b3cd08dcc295161ae)
Maven home: C:\java\apache-maven-3.9.6
Java version: 17.0.11, vendor: Eclipse Adoptium, runtime: C:\Program 
Files\Eclipse Adoptium\jdk-17.0.11.9-hotspot
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"
{noformat}


  was:
Plugin throws {{NullPointerException}} when running {{{}javadoc:javadoc{}}}.

See:
 * Failing PR: https://github.com/apache/commons-compress/pull/528
 * Build log: 
[https://github.com/apache/commons-compress/actions/runs/9113449616/job/25054982405?pr=528]

Or:
 # git clone [https://gitbox.apache.org/repos/asf/commons-compress.git]
 # git checkout 542cc5a602a9128932e3fb75503383e481141e7e
 # Edit pom.xml and set the parent POM to version 70
 # Run 'mvn javadoc:javadoc' causes:

{noformat}
[INFO] --- javadoc:3.6.3:javadoc (default-cli) @ commons-compress ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  8.434 s
[INFO] Finished at: 2024-05-16T09:36:02-04:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc (default-cli) on 
project commons-compress: Execution default-cli of goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc failed: Cannot 
invoke "String.length()" because "text" is null -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc (default-cli) on 
project commons-compress: Execution default-cli of goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc failed: Cannot 
invoke "String.length()" because "text" is null
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 
(MojoExecutor.java:333)
    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.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:77)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:568)
    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: org.apache.maven.plugin.PluginExecutionException: Execution 
default-cli of goal org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc 
failed: Cannot invoke "String.length()" because "text" is null
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:133)
    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.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:77)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:568)
    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.NullPointerException: Cannot invoke "String.length()" 
because "text" is null
    at org.codehaus.plexus.util.xml.pull.MXSerializer.writeElementContent 
(MXSerializer.java:912)
    at org.codehaus.plexus.util.xml.pull.MXSerializer.text 
(MXSerializer.java:780)
    at 
org.apache.maven.plugins.javadoc.options.io.xpp3.JavadocOptionsXpp3Writer.writeJavadocOptions
 (JavadocOptionsXpp3Writer.java:287)
    at 
org.apache.maven.plugins.javadoc.options.io.xpp3.JavadocOptionsXpp3Writer.write 
(JavadocOptionsXpp3Writer.java:81)
    at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.buildJavadocOptions 
(AbstractJavadocMojo.java:6017)
    at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.executeReport 
(AbstractJavadocMojo.java:1870)
    at org.apache.maven.plugins.javadoc.JavadocReport.generate 
(JavadocReport.java:135)
    at org.apache.maven.plugins.javadoc.JavadocReport.doExecute 
(JavadocReport.java:304)
    at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.execute 
(AbstractJavadocMojo.java:1825)
    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.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:77)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:568)
    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)
{noformat}


> java.lang.NullPointerException: Cannot invoke "String.length()" because 
> "text" is null
> --------------------------------------------------------------------------------------
>
>                 Key: MJAVADOC-793
>                 URL: https://issues.apache.org/jira/browse/MJAVADOC-793
>             Project: Maven Javadoc Plugin
>          Issue Type: Bug
>    Affects Versions: 3.6.3
>            Reporter: Gary D. Gregory
>            Priority: Blocker
>
> Plugin throws {{NullPointerException}} when running {{{}javadoc:javadoc{}}}.
> See:
>  * Failing PR: https://github.com/apache/commons-compress/pull/528
>  * Build log: 
> [https://github.com/apache/commons-compress/actions/runs/9113449616/job/25054982405?pr=528]
> Or:
>  # git clone [https://gitbox.apache.org/repos/asf/commons-compress.git]
>  # git checkout 542cc5a602a9128932e3fb75503383e481141e7e
>  # Edit pom.xml and set the parent POM to version 70
>  # Run 'mvn javadoc:javadoc' causes:
> {noformat}
> [INFO] --- javadoc:3.6.3:javadoc (default-cli) @ commons-compress ---
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] BUILD FAILURE
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] Total time:  8.434 s
> [INFO] Finished at: 2024-05-16T09:36:02-04:00
> [INFO] 
> ------------------------------------------------------------------------
> [ERROR] Failed to execute goal 
> org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc (default-cli) on 
> project commons-compress: Execution default-cli of goal 
> org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc failed: Cannot 
> invoke "String.length()" because "text" is null -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute 
> goal org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc 
> (default-cli) on project commons-compress: Execution default-cli of goal 
> org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc failed: Cannot 
> invoke "String.length()" because "text" is null
>     at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 
> (MojoExecutor.java:333)
>     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.NativeMethodAccessorImpl.invoke0 (Native Method)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
> (NativeMethodAccessorImpl.java:77)
>     at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke (Method.java:568)
>     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: org.apache.maven.plugin.PluginExecutionException: Execution 
> default-cli of goal 
> org.apache.maven.plugins:maven-javadoc-plugin:3.6.3:javadoc failed: Cannot 
> invoke "String.length()" because "text" is null
>     at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
> (DefaultBuildPluginManager.java:133)
>     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.NativeMethodAccessorImpl.invoke0 (Native Method)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
> (NativeMethodAccessorImpl.java:77)
>     at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke (Method.java:568)
>     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.NullPointerException: Cannot invoke "String.length()" 
> because "text" is null
>     at org.codehaus.plexus.util.xml.pull.MXSerializer.writeElementContent 
> (MXSerializer.java:912)
>     at org.codehaus.plexus.util.xml.pull.MXSerializer.text 
> (MXSerializer.java:780)
>     at 
> org.apache.maven.plugins.javadoc.options.io.xpp3.JavadocOptionsXpp3Writer.writeJavadocOptions
>  (JavadocOptionsXpp3Writer.java:287)
>     at 
> org.apache.maven.plugins.javadoc.options.io.xpp3.JavadocOptionsXpp3Writer.write
>  (JavadocOptionsXpp3Writer.java:81)
>     at 
> org.apache.maven.plugins.javadoc.AbstractJavadocMojo.buildJavadocOptions 
> (AbstractJavadocMojo.java:6017)
>     at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.executeReport 
> (AbstractJavadocMojo.java:1870)
>     at org.apache.maven.plugins.javadoc.JavadocReport.generate 
> (JavadocReport.java:135)
>     at org.apache.maven.plugins.javadoc.JavadocReport.doExecute 
> (JavadocReport.java:304)
>     at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.execute 
> (AbstractJavadocMojo.java:1825)
>     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.NativeMethodAccessorImpl.invoke0 (Native Method)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
> (NativeMethodAccessorImpl.java:77)
>     at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke (Method.java:568)
>     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)
> {noformat}
> My local env:
> {noformat}
> Apache Maven 3.9.6 (bc0240f3c744dd6b6ec2920b3cd08dcc295161ae)
> Maven home: C:\java\apache-maven-3.9.6
> Java version: 17.0.11, vendor: Eclipse Adoptium, runtime: C:\Program 
> Files\Eclipse Adoptium\jdk-17.0.11.9-hotspot
> Default locale: en_US, platform encoding: Cp1252
> OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"
> {noformat}



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