I like to define a class as a collection of common items that make-up an object's functionality. You'll also hear definitions like, "a class is the blueprint from which individual objects are created." We'll create a class called TV. The TV class will have regular TV operations such as Turn On, Turn Off, Volume Up, Volume Down, Channel Up, Channel Down, Set Channel and even Set Volume. We'll then instantiate that class from the TestTV class. You may notice that in order to instantiate the TV class, we set the data-type as the class name: TV tv1 = new TV(); "A class is essentially a programmer-defined type." Fun Fact: Arrays in Java are treated as objects. The code should be pretty straightforward. Overview of TV.java: Initialize the channel variable and set it to 1 Initialize the volumeLevel variable and set it to 1 Set the on variable to false so that the TV is in the default off position. turnOn() method to turn the TV on turn...