Project 2: Counter

Define a class called Counter that will be used to count things. An object of this class records a count that is a nonnegative integer. The only method that can set the counter is the one that sets it to 0. Include the following methods:

- toString method

- reset the count to 0

- returns the current count value

- equals method

- increment the count by 1

- decrement the count by 1, should not allow the value of the count to become negative

Create a separate tester class to test all the methods in your class definition.