The observer pattern is often used to implement event-driven programming. In event-driven programming, objects are notified of events that occur in the system. For example, a button click event ...

This is where the main class is located. It doesn't do much, it just creates two windows, one being the observer, the other being the subject, and it adds the observer in the subject's list. This is ...

This assignment will give you practice in using the Observer ... to the design of the project. You may find it helpful to model Trades of each stock similar to the Bid.java class. This application is ...