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Java > Open Source Codes > org > jgrapht > util > StopWatch


1 /* ==========================================
2  * JGraphT : a free Java graph-theory library
3  * ==========================================
4  *
5  * Project Info: http://jgrapht.sourceforge.net/
6  * Project Creator: Barak Naveh (http://sourceforge.net/users/barak_naveh)
7  *
8  * (C) Copyright 2003-2006, by Barak Naveh and Contributors.
9  *
10  * This library is free software; you can redistribute it and/or modify it
11  * under the terms of the GNU Lesser General Public License as published by
12  * the Free Software Foundation; either version 2.1 of the License, or
13  * (at your option) any later version.
14  *
15  * This library is distributed in the hope that it will be useful, but
16  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
18  * License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public License
21  * along with this library; if not, write to the Free Software Foundation,
22  * Inc.,
23  * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
24  */

25 /* -----------------
26  * StopWatch.java
27  * -----------------
28  * (C) Copyright 2005-2006, by Assaf Lehr and Contributors.
29  *
30  * Original Author: Assaf Lehr
31  * Contributor(s): -
32  *
33  * $Id: StopWatch.java 504 2006-07-03 02:37:26Z perfecthash $
34  *
35  * Changes
36  * -------
37  */

38 package org.jgrapht.util;
39
40 /**
41  * @author Assaf
42  * @since May 30, 2005
43  */

44 public class StopWatch
45 {
46
47     //~ Instance fields -------------------------------------------------------
48

49     long beforeTime;
50
51     //~ Methods ---------------------------------------------------------------
52

53     public void start()
54     {
55         this.beforeTime = System.currentTimeMillis();
56     }
57
58     public void stopAndReport()
59     {
60         long deltaTime = System.currentTimeMillis() - beforeTime;
61         if (deltaTime > 9999) {
62             double deltaTimeSec = deltaTime / 1000.0;
63             System.out.println(
64                 "# Performence: " + deltaTimeSec + " full Seconds");
65         } else {
66             String JavaDoc timeDesc;
67             timeDesc =
68                 (deltaTime <= 10) ? "<10ms [less than minumun measurement time]"
69                 : String.valueOf(deltaTime);
70             System.out.println("# Performence: in MiliSeconds:" + timeDesc);
71         }
72     }
73 }
74
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