Hi,
Inorder to get checkstyle report of my project I executed following
command
C:\>mvn checkstyle:checkstyle
For this I am getting following exception:
constituent[22]: file:/C:/maven-2.0/bin/../lib/doxia-
sink-api-1.0-alpha-4.jar
---------------------------------------------------
java.lang.NullPointerException
at
org.apache.maven.usability.diagnostics.DiagnosisUtils.appendRootCause
IfPresentAndUnique(DiagnosisUtils.java:89)
at
org.apache.maven.usability.diagnostics.ErrorDiagnostics$PuntErrorDiag
noser.diagnose(ErrorDiagnostics.java:132)
at org.apache.maven.usability.diagnostics.ErrorDiagnostics.diagnose
(Erro
rDiagnostics.java:104)
at org.apache.maven.DefaultMaven.logDiagnostics(DefaultMaven.java
:693)
at org.apache.maven.DefaultMaven.logFatal(DefaultMaven.java:627)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:143)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java
:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java
:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
I want reason for this exception...
Thanks in advance
-----
Deepika.S
