compilation error

[geopamplona]

Hello,
I'm trying to compile the project and I get the following error.
I think it could be the java version that I use to compile

What version should be used to compile the project? 1.7? 1.8?

could you distribute a new release with the compiled connector?

Thank you !

[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] Failure executing javac, but could not parse the error:
javac: invalid target release: 1.8
Usage: javac <options> <source files>
use -help for a list of possible options

[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.370 s
[INFO] Finished at: 2018-03-22T12:30:15+01:00
[INFO] Final Memory: 10M/229M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project kafka-connect-rest: Compilation failure
[ERROR] Failure executing javac, but could not parse the error:
[ERROR] javac: invalid target release: 1.8
[ERROR] Usage: javac <options> <source files>
[ERROR] use -help for a list of possible options

edit:

finally I have been able to compile correctly configuring java_home to java 1.8
It would be nice to define it in the documentation