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http://jira.codehaus.org/browse/MNG-4865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
eric zhu closed MNG-4865.
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Resolution: Fixed
Fix Version/s: 2.2.1
I have found the root cause.
I added one line in m2.conf
set MAVEN_OPTS=-Xmx1024m -XX:MaxPermSize=256m
> mvn fails because of null property
> ----------------------------------
>
> Key: MNG-4865
> URL: http://jira.codehaus.org/browse/MNG-4865
> Project: Maven 2 & 3
> Issue Type: Bug
> Components: Command Line
> Affects Versions: 2.2.1
> Environment: windows vista32
> Reporter: eric zhu
> Fix For: 2.2.1
>
>
> I downloaded maven and ran 'maven -version' under
> 'C:\workplace\apache-maven-2.2.1\bin'
> Got the error:
> java.lang.NullPointerException: key can't be null
> at java.lang.System.checkKey(System.java:771)
> at java.lang.System.getProperty(System.java:647)
> at
> org.codehaus.classworlds.Configurator.configure(Configurator.java:240)
> at org.codehaus.classworlds.Launcher.configure(Launcher.java:156)
> at
> org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:426)
> at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
> I ran the same on another XP PC with the same source, everything worked fine
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