Design a class named StopWatch. The class contains:■ The private data fields startTime and endTime with get methods.■ A 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 thestop watch in milliseconds.Draw the UML diagram for the class, and then implement the class. Write a test program that measures the execution time of adding numbers from 1 to 1,000,000.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Design a class named StopWatch. The class contains:
■ The private data fields startTime and endTime with get methods.
■ A 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
stop watch in milliseconds.
Draw the UML diagram for the class, and then implement the class. Write a test program that measures the execution time of adding numbers from 1 to 1,000,000.

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