Found the solution! In the project's pom.xml, simply add the following inside <configuration>
:
<compiler>C:\Program Files (x86)\Java\jdk1.6.0_37\bin\javac.exe</compiler>
i.e.
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>xmlbeans-maven-plugin</artifactId>
<version>2.3.3</version>
<executions>
<execution>
<goals>
<goal>xmlbeans</goal>
</goals>
</execution>
</executions>
<inherited>true</inherited>
<configuration>
<schemaDirectory>${basedir}/src/main/xsd</schemaDirectory>
<compiler>C:\Program Files (x86)\Java\jdk1.6.0_37\bin\javac.exe</compiler>
</configuration>
</plugin>
Also, be sure to point the Window -> Preferences -> Java -> installed JREs
to the JDK's, not JRE's: C:\Program Files (x86)\Java\jdk1.6.0_37
. As described in this thread.