Maven pointing to JRE instead of jdk

Question

I've been working with a co-worker on a problem I have been experiencing on a new project I just joined. Long story short, maven isn't building my .war file correctly. When I give my co-worker my war file, he experiences the same problem I have, and when he gives me his compiled .war file, everything works. We are both working with the same source. So, I am trying to get maven setup correctly (the same as his), we both have the same version of maven now. However, I think maven is looking at the java_home incorrectly.

when I do an mvn -version command, I get the following:

C:\java\KME_workspace\CU-KME>mvn -version
Apache Maven 3.0.4 (r1232337; 2012-01-17 03:44:56-0500)
Maven home: C:\java\tools\apache-maven-3.0.4
Java version: 1.6.0_45, vendor: Sun Microsystems Inc.
Java home: C:\java\jdks\jdk1.6.0_45\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"

My system's JAVA_HOME variable is set correctly to C:\java\jdks\jdk1.6.0_45.

Anyone know my maven is looking at the jre, and how do I set it correctly back to the JDK? It's possible I am looking at the problem in correctly too, so if you have any ideas, that would be great.

Thanks.

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As some noted, the JRE reference in the java home in the maven version was a red herring rabbit hole on my part. Upon further testing I have some new interesting information. I am running maven commands directly from the command line. I check out code from our svn repository with eclipse, and try to run a maven package on that code, and the .war doesn't build correctly. However, if I do a team export in eclipse to a new directory, and the run the maven package on that, it builds the .war fine and works perfectly. As I understand it, the team export in eclipse removes all the subversion files in the exported directory. Anyone have any ideas on how to solve this?

Answer 1

From the Maven Properties Guide:

${java.home} specifies the path to the current JRE_HOME environment use with relative paths to get for example: ${java.home}../bin/java.exe

java.home property is not the same thing as JAVA_HOME environment setting. It is actually dynamic property showing you which JRE is running your code. 

Try setting the java.home property correctly and see if it works.

Answer 2

In Eclipse, Window>Preferences>Java>Installed JREs> make sure jdk is present and selected.

If jdk and jre both are present, then delete jre from Installed JREs.