How to debug Maven compile?

[Peter Nabbefeld <pe...@gmx.de>]

Hello,

I get a strange error compiling a NetBeans module using Maven (see debug 
output at the bottom; the file "Bundle.properties" exists, of course). 
This exception only is thrown when compiling first time, second time 
compilation works (but other errors exist, so it's no option to just 
ignore the exception).

The problem for me is, the stack trace shows only classes in external 
modules, so my question is: where can I set a breakpoint to see what 
happens? Are there any documents describing how Maven is used to start 
the lifecycle steps? E.g. I'd like to know how and when NB annotations 
are processed in Maven context - obviously this is related to my problems.

Kind regards

Peter




org.apache.maven.lifecycle.LifecycleExecutionException: Failed to 
execute goal 
org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile 
(default-compile) on project ApacheHttpdConfigurator: Compilation failure
de/epdv/tools/configurator/httpd/CfgEdTopComponent.java:[33,14] Cannot 
find resource de/epdv/tools/configurator/httpd/Bundle.properties

     at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
     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:116)
     at 
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
     at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
     at 
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
     at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
     at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
     at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
     at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
     at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
     at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
     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: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.compiler.CompilationFailureException: 
Compilation failure
de/epdv/tools/configurator/httpd/CfgEdTopComponent.java:[33,14] Cannot 
find resource de/epdv/tools/configurator/httpd/Bundle.properties

     at 
org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1215)
     at 
org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:188)
     at 
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
     at 
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
     ... 20 more


For more information about the errors and possible solutions, please 
read the following articles:
[Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException


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