Question-7 Stopwatch Design a class named Stophatch. 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 startO that resets the startTime to the current time A method named stopO that sets the endTime to the current time. A method named getElapsedTimeO that returns the elapsed time for the stopwatch in milliseconds. Draw the UML diagram for the class and then implement the class. Write a test program that measures the execution time of sorting 100,000 numbers using selection sort