Consider a class that provides a method to read integers one at a time from the keyboard. The class tracks the smallest, largest, and average of the integers it has read so far. a. Write an interface...

Consider a class that provides a method to read integers one at a time from the keyboard. The class tracks the smallest, largest, and average of the integers it has read so far.

a. Write an interface for the class. Include comments suitable for javadoc that specify the methods of the class.

b. Implement and demonstrate the class.