Design a class named StopWatch. The class contains:
■■ Private data fields startTime and endTime 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 getElapsedTime() 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.