Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Clock |
|
| 1.5;1.5 |
1 | /* | |
2 | * Copyright (C) 1998-2000 Semiotek Inc. All Rights Reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted under the terms of either of the following | |
6 | * Open Source licenses: | |
7 | * | |
8 | * The GNU General Public License, version 2, or any later version, as | |
9 | * published by the Free Software Foundation | |
10 | * (http://www.fsf.org/copyleft/gpl.html); | |
11 | * | |
12 | * or | |
13 | * | |
14 | * The Semiotek Public License (http://webmacro.org/LICENSE.) | |
15 | * | |
16 | * This software is provided "as is", with NO WARRANTY, not even the | |
17 | * implied warranties of fitness to purpose, or merchantability. You | |
18 | * assume all risks and liabilities associated with its use. | |
19 | * | |
20 | * See www.webmacro.org for more information on the WebMacro project. | |
21 | */ | |
22 | ||
23 | ||
24 | package org.webmacro.util; | |
25 | ||
26 | import java.util.Date; | |
27 | ||
28 | /** | |
29 | * This is an optimization. "System.currentTimeMillis()" is a relatively | |
30 | * slow method, and "new Date()" is an incredibly expensive operation. | |
31 | * | |
32 | * Update: System.ctm is no longer all that slow; replaced with a version | |
33 | * that caches the Date but not the time. | |
34 | */ | |
35 | final public class Clock | |
36 | { | |
37 | ||
38 | /** Disallow instantiation. */ | |
39 | private Clock() | |
40 | 0 | { |
41 | 0 | } |
42 | ||
43 | /** | |
44 | * Every tick interval the following variable is updated with the current system time. | |
45 | */ | |
46 | 0 | static public long TIME = System.currentTimeMillis(); |
47 | ||
48 | /** | |
49 | * Date information. | |
50 | */ | |
51 | 0 | private static Date date = new Date(); |
52 | ||
53 | /** | |
54 | * The current date. This object is updated not faster than once per second. | |
55 | */ | |
56 | public synchronized static Date getDate () | |
57 | { | |
58 | 0 | long time = System.currentTimeMillis(); |
59 | 0 | if ((TIME - time) > 1000) { |
60 | 0 | TIME = time; |
61 | 0 | date = new Date(TIME); |
62 | } | |
63 | 0 | return date; |
64 | } | |
65 | ||
66 | } | |
67 | ||
68 |