Octal Observer

Complete this exercise by implementing the code as specified in the UML class diagram shown here.

1. Add your implementation in the src/main/java/ca/uwaterloo/cs446 folder (Implement it in the ca.uwaterloo.cs446 package).

2. To test it out, use the command mvn test from the root directory of the repository. If you need help installing Maven, ask the instructor or TA.