Package edu.odu.cs.cs350

Class Stopwatch

java.lang.Object

edu.odu.cs.cs350.Stopwatch

public class Stopwatch
extends Object

A simple utility class for measuring elapsed execution time.

The Stopwatch records the starting time when start() is called, and computes elapsed time on demand using elapsedSeconds() or elapsedMilliseconds().

This class does not automatically stop; the stopwatch is considered to "stop" at the moment an elapsed time method is called. This makes it suitable for profiling individual operations or measuring the total runtime of a program segment.

Constructor Summary

Constructors

Constructor	Description
Stopwatch()

Method Summary

Modifier and Type	Method	Description
long	elapsedMilliseconds()	Returns the elapsed time in milliseconds since the last call to start().
double	elapsedSeconds()	Returns the elapsed time in seconds since the last call to start().
void	start()	Starts or restarts the stopwatch.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Stopwatch

public Stopwatch()

Method Details

start

public void start()

Starts or restarts the stopwatch.

This method captures the current time in nanoseconds and overwrites any previously stored start time.

elapsedSeconds

public double elapsedSeconds()

Returns the elapsed time in seconds since the last call to start().

This method does not stop the stopwatch; it simply computes the elapsed difference between the current time and startTime.

Returns:

elapsed time in seconds as a double

elapsedMilliseconds

public long elapsedMilliseconds()

Returns the elapsed time in milliseconds since the last call to start().

Returns:

elapsed time in milliseconds as a long