I'm running the following command:
javac -jar maze-environment.jar Broken.java

And receiving the following error message:
Broken.java:30: cannot find symbol
symbol : variable ControlTest
location : class Broken
   ControlTest.test(direction,ControlTest.NORTHCONTROLLER,robot);
                              ^

The file 'ControlTest.class' is in the same directory as Broken.java and maze-environment.jar.