"mvn exec:java" as described in Ch 4, "Maven: The Definitive Guide", fails for 
me with error message shown below
-----------------------------------------------------------------------------------------------------------------

                 Key: MEXEC-71
                 URL: http://jira.codehaus.org/browse/MEXEC-71
             Project: Maven 2.x Exec Plugin
          Issue Type: Bug
          Components: exec
         Environment: Windows NT, MS-DOS
            Reporter: Robert Kruck
            Priority: Minor
         Attachments: pom.xml_CAN_INSTALL, pom.xml_COPIED

1) I was using the expanded simple-weather pom.xml that was downloaded with the 
other "Maven: The Definitive Guide", Ch4 example files.

2) I find that I get a successful "simple-weather" mvn install, with 
simple-weather in the state it is in as of page 47, if I delete the <parent> 
... </parent> section of the provided pom.xml that I uploaded along with this 
Issue.

3) With the <parent> ... </parent> section deleted I can do "mvn install" but 
now get a complaint about a missing class when running the command —

mvn exec:java -Dexec.mainClass=org.sonatype.mavenbook.weather.Main

[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] An exception occured while executing the Java class. 
org.sonatype.mavenbook.weather.Main

Caused by: java.lang.ClassNotFoundException: org.sonatype.mavenbook.weather.Main

My current pom.xml file is attached (includes CAN_INSTALL in its name).

The Maven book's CH4 pom.xml, which I downloaded from www.sonatype.org, is also 
attached. This pom.xml can neither "mvn install" nor "mvn exec:java"

Does anyone have a pom.xml that can be used to do mvn exec:java 
-Dexec.mainClass=org.sonatype.mavenbook.weather.Main for the "Maven: The 
Definitive Guide" Chapter 4 example "simple-weather" ?

My java version is: java version "1.6.0_17"

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