CS 342 - 09/07/17

Event-Driven Programming
   - the input is asynchronous

Such code normally have some event handling environment.

Code is divided in 3 scetions

    1.   Set-up Code
            1a.   Set up the widgets as instance varaibles
            1b.   Set up the JFrame
            1c.   Set up Widgets
            1d.   Set up connections between Widgets and
                      Event Handling code
            1e.   Add Widgets to the JFrame

            1y.   Set the JFrame Size
            1z.   Make the JFrame Visable

    2.   Event Loop
            - This is (HOPEFULLY!) provided for us.
            - Execution started in code of JFrame constructor

    3.   Event Handler(s)
            - Code that reacts to a user event
            - Code is called from the Event Loop
            - Method Names, parameters, return types for the
                Event Handlers was determined by the author
                of the Event Loop
            - In Java, interfaces are used quite heavily for this.