Maven setup error in Ubuntu

Question

I have a small nanoPC with Ubuntu 14.04 LTS installed and Jenkins, but I've found myself needing to install Maven to use with Jenkins. I have installed Maven, but when I try to check the version using mvn --version, I get the following:

I have:

• Set the Java environment variables and tested it with java -version.
• Set the Maven environment variables.
• Tried navigating to that location in the terminal and doing ls, getting the files list wich includes java.
• Tried executing java and get the list of available commands.

What am I missing here?