Create a class named
Course should define a primary constructor that accepts three fields: a
String? (the department),
String? (the course number, and yes, this must be a
String) and an
Int (the enrollment).
You are welcome to name these fields however you like, and they should be private.
Your constructor should reject
null departments and numbers and negative enrollments.
You do not need to provide any getters and setters!
Instead, define a single method named
equals method accepts an
Any? as a single parameter.
It should return
true if the passed object is a
Course and has the same values for the department and number,