Package org.jfree.chart.demo

Class Performance2

java.lang.Object

org.jfree.chart.demo.Performance2

public class Performance2
extends Object

A basic performance test for a couple of common operations.

Constructor Summary

Constructors

Constructor	Description
Performance2()	Default constructor.

Method Summary

Modifier and Type	Method	Description
Number	getObject()	Returns the object - caller has to use doubleValue() method.
double	getObjectAsPrimitive()	Returns a double value generated from the Object - should be similar to previous method, but is not!
void	getObjectAsPrimitiveLoop(int count)	Cycles through accessing the object as a primitive.
void	getObjectLoop(int count)	Cycles through accessing the object.
double	getPrimitive()	Just use double value - should be fast.
Number	getPrimitiveAsObject()	Creates a Number object every time the primitive is accessed - should be really slow.
void	getPrimitiveAsObjectLoop(int count)	Cycles through accessing the primitive as an object.
void	getPrimitiveLoop(int count)	Cycles through accessing the primitive.
static void	main(String[] args)	The starting point for the performance test.
void	status(String label, Date start, Date end)	Outputs the current status to the console.

Methods inherited from class java.lang.Object

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

Constructor Details

Performance2

public Performance2()

Default constructor.

Method Details

getPrimitive

public double getPrimitive()

Just use double value - should be fast.

Returns:

the double value.

getPrimitiveAsObject

public Number getPrimitiveAsObject()

Creates a Number object every time the primitive is accessed - should be really slow.

Returns:

creates and returns a Number object.

getObject

public Number getObject()

Returns the object - caller has to use doubleValue() method.

Returns:

an existing Number object.

getObjectAsPrimitive

public double getObjectAsPrimitive()

Returns a double value generated from the Object - should be similar to previous method, but is not!

Returns:

the doubleValue() for the Number.

getPrimitiveLoop

public void getPrimitiveLoop(int count)

Cycles through accessing the primitive.

Parameters:

count - the number of times to access.

getPrimitiveAsObjectLoop

public void getPrimitiveAsObjectLoop(int count)

Cycles through accessing the primitive as an object.

Parameters:

count - the number of times to access.

getObjectAsPrimitiveLoop

public void getObjectAsPrimitiveLoop(int count)

Cycles through accessing the object as a primitive.

Parameters:

count - the number of times to access.

getObjectLoop

public void getObjectLoop(int count)

Cycles through accessing the object.

Parameters:

count - the number of times to access.

status

public void status(String label,
Date start,
Date end)

Outputs the current status to the console.

Parameters:

label - the label.

start - the start time.

end - the end time.

main

public static void main(String[] args)

The starting point for the performance test.

Parameters:

args - ignored.