Chapter 10.2, Problem 7SC

Explanation of Solution

Event Source: The graphical user interface components that act as a source of an event is known as event source. All the event listeners get notified by the event source when an event is occurred and it can also report an event at the time it occurs.

Event Listener: Event listener is responsible for handling events that occur in a program. Every program must indicate which event is required and that is done by event listener object...