| 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 |