A basic performance test for a couple of common operations
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ----------------
* Performance.java
* ----------------
* (C) Copyright 2002-2004, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited).
* Contributor(s): -;
*
* $Id: Performance.java,v 1.10 2004/04/26 19:12:00 taqua Exp $
*
* Changes (since 11-Oct-2002)
* ---------------------------
* 11-Oct-2002 : Fixed errors reported by Checkstyle (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.geom.Line2D;
import java.util.Date;
/**
* A basic performance test for a couple of common operations.
*
*/
public class Performance {
/** The value. */
private double value = 2.0;
/** The number. */
private Double number = new Double(this.value);
/**
* Default constructor.
*/
public Performance() {
super();
}
/**
* Creates lines in a loop.
*
* @param count the number of lines to create.
*/
public void createLines(final int count) {
Line2D line = new Line2D.Double();
for (int i = 0; i < count; i++) {
line = new Line2D.Double(1.0, 1.0, 1.0, 1.0);
}
System.out.println(line.toString());
}
/**
* Creates one line, then repeatedly calls the setLine method.
*
* @param count the number of times to call the setLine method.
*/
public void setLines(final int count) {
final Line2D line = new Line2D.Double(0.0, 0.0, 0.0, 0.0);
for (int i = 0; i < count; i++) {
line.setLine(1.0, 1.0, 1.0, 1.0);
}
}
/**
* Repeatedly grabs a value from a Number instance.
*
* @param count the number of times to call doubleValue().
*/
public void getNumber(final int count) {
double d = 0.0;
for (int i = 0; i < count; i++) {
d = this.number.doubleValue();
}
System.out.println(d);
}
/**
* Repeatedly grabs a value from a double.
*
* @param count the number of times to fetch the value.
*/
public void getValue(final int count) {
double d = 0.0;
for (int i = 0; i < count; i++) {
d = this.value;
}
System.out.println(d);
}
/**
* Writes the current time to the console.
*
* @param text the prefix.
* @param time the time.
*/
public void writeTime(final String text, final Date time) {
System.out.println(text + " : " + time.getTime());
}
/**
* Starting point for the application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final Performance p = new Performance();
System.out.println("Simple performance tests.");
final Date start1 = new Date();
p.createLines(100000);
final Date end1 = new Date();
final Date start2 = new Date();
p.setLines(100000);
final Date end2 = new Date();
p.writeTime("Start create lines", start1);
p.writeTime("Finish create lines", end1);
p.writeTime("Start set lines", start2);
p.writeTime("Finish set lines", end2);
final Date start3 = new Date();
p.getNumber(1000000);
final Date end3 = new Date();
final Date start4 = new Date();
p.getValue(1000000);
final Date end4 = new Date();
p.writeTime("Start get number", start3);
p.writeTime("Finish get number", end3);
p.writeTime("Start get value", start4);
p.writeTime("Finish get value", end4);
}
}
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