What does the following do in pom.xml?
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
Configures the compiler compliance level. Source 1.6 means your source code must be according to java 1.6, and target means the generated bytecode should be compatible with a 1.6 compliant JVM.