Stopwatch

java.lang.Object
- Stopwatch

```
public class Stopwatch
extends java.lang.Object
```
Specification for the Stopwatch class. This Stopwatch class will behave like a stopwatch. It can be started, stopped, and asked for the time elapsed. This time can be either computer time (clock ticks), seconds, minutes, or hours.

Constructor Summary

Constructors
Constructor and Description

Stopwatch()
Default constructor Creates a new Stopwatch object

Constructors
Constructor and Description
`Stopwatch()` Default constructor Creates a new Stopwatch object

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`delay()` Inserts a short delay.
`void`	`delay(int delayFactor)` Inserts a delay of the given size.
`double`	`getHours()` Returns the elapsed time in hours, as recorded at the last call to stop().
`double`	`getMilliSeconds()` Returns the elapsed time in milliseconds, as recorded at the last call to stop().
`double`	`getMinutes()` Returns the elapsed time in minutes, as recorded at the last call to stop().
`double`	`getSeconds()` Returns the elapsed time in seconds, as recorded at the last call to stop().
`long`	`getTicks()` Returns the elapsed time in clock ticks, as recorded at the last call to stop().
`static void`	`main(java.lang.String[] args)`
`void`	`start()` Resets this Stopwatch object to the current time.
`void`	`stop()` Records the time elapsed since creation/the last start.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Stopwatch
```
public Stopwatch()
```
    Default constructor Creates a new Stopwatch object
    Post:
    The clock time at the time of declaration has been recorded.
- Method Detail
  - start
```
public void start()
```
    Resets this Stopwatch object to the current time.
    Pre:
    "self" has been declared.
    Post:
    The stopwatch timer has been "started" and the clock time at start time has been recorded.
  - stop
```
public void stop()
```
    Records the time elapsed since creation/the last start.
    Pre:
    start() has been called.
    Post:
    The stopwatch timer has been "stopped" and the accumulated time since start() was called has been recorded, in clock ticks.
  - delay
```
public void delay()
```
    Inserts a short delay. This allows you to artifically lengthen the amount of time taken by the operation you're timing. It's helpful if the operation is normally too fast to clock. Use with care, because improper use can destroy relative timing information.
  - delay
```
public void delay(int delayFactor)
```
    Inserts a delay of the given size. This allows you to artifically lengthen the amount of time taken by the operation you're timing. It's helpful if the operation is normally too fast to clock. Use with care, because improper use can destroy relative timing information.
    
    Parameters:
    
    delayFactor - The multiplier for the amount of artificial time delay to insert
    Pre:
    start() has been called.
    Post:
    An artificial amount of time has been added to the total computer process time as reported by the clock function. In other words, during this delay time the "stopwatch" continues to accumulate time but nothing else happens. Thus this is a way to make an operation appear to take longer than it actually does. It can be used to cause the stopwatch to accumulate time artificially when monitoring the performance of an algorithm on a relatively small data set. This helps us to overcome the problem of trying to measure the amount of time taken to perform a calculation and finding that it took "no time at all". Note that we still cannot measure the absoute time taken, but fortunately we are only interested in measuring the relative time taken by the same algorithm on data sets of different sizes, or by different algorithms on data sets of the same size. The input parameter delayFactor is a linear multiplier for increasing the amount of delay time. For example, a delayFactor of 2 doubles the amount of delay time accumulated by a single call to the delay() member function.
  - getTicks
```
public long getTicks()
```
    Returns the elapsed time in clock ticks, as recorded at the last call to stop().
    
    Returns:
    
    the number of ticks recorded between the previous start/stop sequence.
    Pre:
    start() and stop() have been called (in that order).
    Post:
    Returns the accumulated time between the times when the stopwatch was last started and stopped, in clock ticks.
  - getMilliSeconds
```
public double getMilliSeconds()
```
    Returns the elapsed time in milliseconds, as recorded at the last call to stop().
    
    Returns:
    
    the number of milliseconds recorded between the previous start/stop sequence.
    Pre:
    start() and stop() have been called (in that order).
    Post:
    Returns the accumulated time between the times when the stopwatch was last started and stopped, in seconds.
  - getSeconds
```
public double getSeconds()
```
    Returns the elapsed time in seconds, as recorded at the last call to stop().
    
    Returns:
    
    the number of seconds recorded between the previous start/stop sequence.
    Pre:
    start() and stop() have been called (in that order).
    Post:
    Returns the accumulated time between the times when the stopwatch was last started and stopped, in seconds.
  - getMinutes
```
public double getMinutes()
```
    Returns the elapsed time in minutes, as recorded at the last call to stop().
    
    Returns:
    
    the number of minutes recorded between the previous start/stop sequence.
    Pre:
    start() and stop() have been called (in that order).
    Post:
    Returns the accumulated time between the times wehn the stopwatch was last started and stopped, in minutes.
  - getHours
```
public double getHours()
```
    Returns the elapsed time in hours, as recorded at the last call to stop().
    
    Returns:
    
    the number of hours recorded between the previous start/stop sequence.
    Pre:
    start() and stop() have been called (in that order).
    Post:
    Returns the accumulated time between the times when the stopwatch was last started and stopped, in hours.
  - main
```
public static void main(java.lang.String[] args)
```

Class Stopwatch

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Stopwatch

Method Detail

start

stop

delay

delay

getTicks

getMilliSeconds

getSeconds

getMinutes

getHours

main