(Stopwatch) Design a class named StopWatch. The class contains: Private data fields startTime and endT i me with getter methods. A no-arg constructor that initializes startTime with the current time. A method named start () that resets the startTime to the current time. - A method named stop () that sets the endTime to the current time. A method named getEl apsedTime () that returns the elapsed time for the stopwatch in milliseconds. Draw the UML diagram for the class then implement the class. Write a test program that measures the execution time of sorting 100,000 numbers using selection sort