com.numericalmethod.suanshu.stats.descriptive

Class SynchronizedStatistic

java.lang.Object

com.numericalmethod.suanshu.stats.descriptive.SynchronizedStatistic

All Implemented Interfaces:

Statistic, java.io.Serializable

public class SynchronizedStatistic
extends java.lang.Object
implements Statistic

This is a thread-safe wrapper of Statistic by synchronizing all public methods so that only one thread at a time can access the instance. This is essentially the same principle used by Java's synchronized collection class.

See Also:

"Brian Goetz, Tim Peierls, Joshua Bloch and Joseph Bowbeer, "Chapter 5," Java Concurrency in Practice.", Serialized Form

Method Summary

Modifier and Type	Method and Description
void	addData(double... data) Recompute the statistic with more data, incrementally if possible.
long	N() Get the size of the sample.
double	value() Get the value of the statistic.

Methods inherited from class java.lang.Object

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

Method Detail

addData

public void addData(double... data)

Description copied from interface: Statistic

Recompute the statistic with more data, incrementally if possible.

Specified by:

addData in interface Statistic

Parameters:

data - an array of new items

value

public double value()

Description copied from interface: Statistic

Get the value of the statistic.

Specified by:

value in interface Statistic

Returns:

the statistic

N

public long N()

Description copied from interface: Statistic

Get the size of the sample.

Specified by:

N in interface Statistic

Returns:

the sample size