title: How to connect multiple classes and all around understanding Java
body: <p>I just started coding in Java and my professor is not the best and teaching it. We were assigned a program that I vaguely understand. I'd really like to understand how it works and how I should look at the problem. Ex. how do I create a department, then store professors in it, leave and make more departments and such, then come back and retrieve the professors from other departments. I don't understand how I am supposed to do that in Java. If anyone could help a beginner out that would be great. Thanks.</p>
  
  <p><strong>Picture of my assignment:</strong></p>
  
  <p><img src="https://i.stack.imgur.com/25sno.png" alt="Picture of my assignment"></p>