17.2. Core Concepts of EDP

Try these first

1. 1.

   Define an event in the context of EDP.

   Hint

   Think about user interactions, like clicks.

2. 2.

   What is an event source?

   Hint

   Consider the elements in a graphical user interface.

3. 3.

   What is an event in EDP?

   • A user action
   • A response function
   • An interface

   Hint

   Think about how interactions in software are defined.

4. 4.

   True or False: An event dispatcher notifies listeners of events.

   • True
   • False

   Hint

   Consider the role of communication in event handling.

5. 5.

   Design a simple event-driven program for a library system where users can borrow books. Identify the event sources, listeners, and handle the borrowing event.

   Hint

   Think about how users interact with book borrowing in a real library setting.

6. 6.

   Explain how a web application can handle multiple user inputs simultaneously using EDP principles, including event sources and handling.

   Hint

   Consider the interaction of all web elements when multiple users engage.