```
public class Counter
extends Object
```
Counting mechanism capable of tracking occurrences and rates.

Constructor Summary

Constructors
Constructor Description

Counter()
Creates a new counter.

Counter(long start, long total, long end)
Creates a new counter in a specific state.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(long count)`	Adds the specified number of occurrences to the counter.
`double`	`duration()`	Returns the duration expressed in fractional number of seconds.
`boolean`	`equals(Object obj)`
`void`	`freeze()`	Freezes the counter in the current state including the counts and times.
`int`	`hashCode()`
`void`	`reset()`	Resets the counter, by zeroing out the count and restarting the timer.
`double`	`throughput()`	Returns the number of occurrences per second.
`String`	`toString()`
`long`	`total()`	Returns the total number of occurrences counted.

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

- Constructor Detail
  - Counter
```
public Counter()
```
    Creates a new counter.
  - Counter
```
public Counter(long start,
               long total,
               long end)
```
    Creates a new counter in a specific state. If non-zero end time is specified, the counter will be frozen.
    
    Parameters:
    
    start - start time
    
    total - total number of items to start with
    
    end - end time; if non-ze
- Method Detail
  - reset
```
public void reset()
```
    Resets the counter, by zeroing out the count and restarting the timer.
  - freeze
```
public void freeze()
```
    Freezes the counter in the current state including the counts and times.
  - add
```
public void add(long count)
```
    Adds the specified number of occurrences to the counter. No-op if the counter has been frozen.
    
    Parameters:
    
    count - number of occurrences
  - throughput
```
public double throughput()
```
    Returns the number of occurrences per second.
    
    Returns:
    
    throughput in occurrences per second
  - total
```
public long total()
```
    Returns the total number of occurrences counted.
    
    Returns:
    
    number of counted occurrences
  - duration
```
public double duration()
```
    Returns the duration expressed in fractional number of seconds.
    
    Returns:
    
    fractional number of seconds since the last reset
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Constructor	Description
`Counter()`	Creates a new counter.
`Counter(long start, long total, long end)`	Creates a new counter in a specific state.

Class Counter

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Counter

Counter

Method Detail

reset

freeze

add

throughput

total

duration

hashCode

equals

toString