{"id":954,"date":"2018-09-17T18:48:48","date_gmt":"2018-09-17T09:48:48","guid":{"rendered":"https:\/\/chat-messenger.com\/?p=954"},"modified":"2018-12-23T01:52:35","modified_gmt":"2018-12-22T16:52:35","slug":"calculating-dates","status":"publish","type":"post","link":"https:\/\/chat-messenger.com\/ko\/blog\/java\/calculating-dates","title":{"rendered":"Java \ub0a0\uc9dc \ubc0f \uc2dc\uac04 \uacc4\uc0b0 \uac00\uc0b0 \ubc0f \ube7c\uae30 \uc27d\uac8c"},"content":{"rendered":"<h2 class=\"common_title\"><a name=\"0\">Java <strong>\ub0a0\uc9dc\/\uc2dc\uac04 \uacc4\uc0b0<\/strong>\uac00\uc0b0\u00b7\uac10\uc0b0\uc774 \uac04\ub2e8\ud558\uac8c<\/a><\/h2>\n<p>\nJava\ub85c \uc27d\uac8c<strong>\ub0a0\uc9dc\/\uc2dc\uac04 \uac00\uc0b0\/\uac10\uc0b0 \uacc4\uc0b0<\/strong>\ud558\ub294 \uc0d8\ud50c \ud504\ub85c\uadf8\ub7a8\uc744 \uc18c\uac1c\ud569\ub2c8\ub2e4.<br \/>\uc0d8\ud50c \ud504\ub85c\uadf8\ub7a8\uc758 \ud2b9\uc9d5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<ul>\n<li>\ud604\uc7ac, \ub610\ub294 \uc784\uc758\uc758 \uc77c\uc790\u00b7\uc2dc\uac01\uc73c\ub85c\ubd80\ud130 \uc9c0\uc815\uc758 \uc2dc\uac04\ub7c9\uc744 \uac00\uc0b0\u00b7\uac10\uc0b0\ud55c \uacb0\uacfc\ub97c \ub3cc\ub824\uc90d\ub2c8\ub2e4.<\/li>\n<li>\ud50c\ub7ec\uc2a4\uc758 \uc218\uce58\ub97c \uc9c0\uc815\ud588\uc744 \uacbd\uc6b0 \uc2dc\uac04\uc744 \uc9c4\ud589\ud574, \ub9c8\uc774\ub108\uc2a4\uc758 \uacbd\uc6b0\ub294 \ub3cc\ub824\uc90d\ub2c8\ub2e4.<br \/>\n\uc608\ub97c \ub4e4\uc5b4, \ud604\uc7ac \ub0a0\uc9dc \uc2dc\uac04\uc73c\ub85c\ubd80\ud130 10 \uc77c \uc804<strong>\uacc4\uc0b0<\/strong>\ud558\ub294 \uacbd\uc6b0\ub294 \uc774\ud558\uac00 \ub429\ub2c8\ub2e4.<br \/>\n<b>Calendar cal = addMonth(-10);<\/b>\n<\/li>\n<li>\uc5f0, \uc6d4, \uc77c, \uc2dc\uac04, \ubd84, \ucd08 \ubc0f \ubc00\ub9ac\ucd08\uc758 \uac01 \uc2dc\uac04 \ud544\ub4dc\uc5d0 \ub300\ud574 \uc784\uc758\uc758 \uc2dc\uac04\uc744 \uc124\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<br \/>\n\ub610\ud55c \uc9c0\uc815\ub41c \uc2dc\uac04\ubd80\ud130 \uc0c1\ub300\uc801\uc73c\ub85c<strong>\uacc4\uc0b0<\/strong>\uadf8\ub807\ub2e4\uba74 \uc778\uc218\uc5d0 Calendar \ud074\ub798\uc2a4\ub97c \uc804\ub2ec\ud569\ub2c8\ub2e4.<br \/>\n\uc608\ub97c \ub4e4\uc5b4, \ub2e4\uc74c\uc5d0\uc11c\ub294 \uc9c0\uc815\ub41c Calendar \uc778\uc2a4\ud134\uc2a4\uc5d0\uc11c 1\ub144 \uc9c4\ud589\ub429\ub2c8\ub2e4.<br \/>\n<b>Calendar cal = add(\u201c\uc9c0\uc815\ub41c Calendar\u201d,1,0,0,0,0,0,0);<\/b>\n<\/li>\n<li>\uac01 \uc2dc\uac04 \ud544\ub4dc\uc758 \uac12\uc774 \ud574\ub2f9 \ubc94\uc704\ub97c \ucd08\uacfc\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \ud070 \uc2dc\uac04 \ud544\ub4dc\uac00 \uc99d\uac00 \ub610\ub294 \uac10\uc18c\ub429\ub2c8\ub2e4.<br \/>\n\uc608\ub97c \ub4e4\uc5b4, \uc544\ub798\uc5d0\uc11c\ub294 \ud604\uc7ac \uc2dc\uac01\uc73c\ub85c\ubd80\ud130 1\uc2dc\uac04\uacfc 5\ubd84 \uc9c4\ud589\ud558\uac8c \ub429\ub2c8\ub2e4.<br \/>\n<b>Calendar cal = addMinute(65);<\/b>\n<\/li>\n<\/ul>\n<p><script type=\"text\/javascript\" src=\"https:\/\/chat-messenger.com\/js\/common.js?dd12sssas2223\" charset=\"UTF-8\"><\/script><br \/>\n<script type=\"text\/javascript\"> writePR(); <\/script><\/p>\n<h2 class=\"common_title\"><a name=\"2\">\uc0d8\ud50c \ud504\ub85c\uadf8\ub7a8<\/a><\/h2>\n<p><textarea readonly=\"readonly\" style=\"font-size: 13px;height: 400px;\" class=\"src\" onclick=\"this.focus();this.select()\">\/**<br \/>\n * \u73fe\u5728\u306e\u65e5\u4ed8\u30fb\u6642\u523b\u304b\u3089\u6307\u5b9a\u306e\u3010\u5e74\u6570\u3011\u3092\u52a0\u7b97\u30fb\u6e1b\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n * @param addYera \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u5e74\u6570<br \/>\n * @return    \u8a08\u7b97\u5f8c\u306e Calendar \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3002<br \/>\n *\/<br \/>\npublic static Calendar addYera(int addYera){<br \/>\n    return add(null,addYera,0,0,0,0,0,0);<br \/>\n}<br \/>\n\/**<br \/>\n * \u73fe\u5728\u306e\u65e5\u4ed8\u30fb\u6642\u523b\u304b\u3089\u6307\u5b9a\u306e\u3010\u6708\u6570\u3011\u3092\u52a0\u7b97\u30fb\u6e1b\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n * @param addMonth \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u6708\u6570<br \/>\n * @return    \u8a08\u7b97\u5f8c\u306e Calendar \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3002<br \/>\n *\/<br \/>\npublic static Calendar addMonth(int addMonth){<br \/>\n    return add(null,0,addMonth,0,0,0,0,0);<br \/>\n}<br \/>\n\/**<br \/>\n * \u73fe\u5728\u306e\u65e5\u4ed8\u30fb\u6642\u523b\u304b\u3089\u6307\u5b9a\u306e\u3010\u65e5\u6570\u3011\u3092\u52a0\u7b97\u30fb\u6e1b\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n * @param addDate \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u65e5\u6570<br \/>\n * @return    \u8a08\u7b97\u5f8c\u306e Calendar \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3002<br \/>\n *\/<br \/>\npublic static Calendar addDate(int addDate){<br \/>\n    return add(null,0,0,addDate,0,0,0,0);<br \/>\n}<br \/>\n\/**<br \/>\n * \u73fe\u5728\u306e\u65e5\u4ed8\u30fb\u6642\u523b\u304b\u3089\u6307\u5b9a\u306e\u3010\u6642\u9593\u3011\u3092\u52a0\u7b97\u30fb\u6e1b\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n * @param addHour \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u6642\u9593<br \/>\n * @return    \u8a08\u7b97\u5f8c\u306e Calendar \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3002<br \/>\n *\/<br \/>\npublic static Calendar addHour(int addHour){<br \/>\n    return add(null,0,0,0,addHour,0,0,0);<br \/>\n}<br \/>\n\/**<br \/>\n * \u73fe\u5728\u306e\u65e5\u4ed8\u30fb\u6642\u523b\u304b\u3089\u6307\u5b9a\u306e\u3010\u5206\u3011\u3092\u52a0\u7b97\u30fb\u6e1b\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n * @param addMinute \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u5206<br \/>\n * @return    \u8a08\u7b97\u5f8c\u306e Calendar \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3002<br \/>\n *\/<br \/>\npublic static Calendar addMinute(int addMinute){<br \/>\n    return add(null,0,0,0,0,addMinute,0,0);<br \/>\n}<br \/>\n\/**<br \/>\n * \u73fe\u5728\u306e\u65e5\u4ed8\u30fb\u6642\u523b\u304b\u3089\u6307\u5b9a\u306e\u3010\u79d2\u3011\u3092\u52a0\u7b97\u30fb\u6e1b\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n * @param addSecond \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u79d2<br \/>\n * @return    \u8a08\u7b97\u5f8c\u306e Calendar \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3002<br \/>\n *\/<br \/>\npublic static Calendar addSecond(int addSecond){<br \/>\n    return add(null,0,0,0,0,0,addSecond,0);<br \/>\n}<br \/>\n\/**<br \/>\n * \u73fe\u5728\u306e\u65e5\u4ed8\u30fb\u6642\u523b\u304b\u3089\u6307\u5b9a\u306e\u6642\u9593\u91cf\u3092\u52a0\u7b97\u30fb\u6e1b\u7b97\u3057\u305f\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n * \u5e74\u3001\u6708\u3001\u65e5\u3001\u6642\u9593\u3001\u5206\u3001\u79d2\u3001\u30df\u30ea\u79d2\u306e\u5404\u6642\u9593\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5bfe\u3057\u3001<br \/>\n * \u4efb\u610f\u306e\u6642\u9593\u91cf\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<br \/>\n * \u305f\u3068\u3048\u3070\u3001\u73fe\u5728\u306e\u65e5\u4ed8\u6642\u523b\u304b\u3089 10 \u65e5\u524d\u3092\u8a08\u7b97\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u3068\u306a\u308a\u307e\u3059\u3002<br \/>\n * Calendar cal = add(null,0,0,-10,0,0,0,0);<br \/>\n *<br \/>\n * \u5404\u6642\u9593\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5024\u304c\u305d\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u305f\u5834\u5408\u3001\u6b21\u306e\u5927\u304d\u3044\u6642\u9593\u30d5\u30a3\u30fc\u30eb\u30c9\u304c<br \/>\n * \u5897\u5206\u307e\u305f\u306f\u6e1b\u5206\u3055\u308c\u307e\u3059\u3002<br \/>\n * \u305f\u3068\u3048\u3070\u3001\u4ee5\u4e0b\u3067\u306f1\u6642\u9593\u30685\u5206\u9032\u3081\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n * Calendar cal = add(null,0,0,0,0,65,0,0);<br \/>\n *<br \/>\n * \u5404\u6642\u9593\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u8a2d\u5b9a\u3059\u308b\u6570\u91cf\u304c0\u306e\u5834\u5408\u306f\u3001\u73fe\u5728\u306e\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002<br \/>\n * java.util.GregorianCalendar\u306e\u5185\u90e8\u51e6\u7406\u3067\u306f\u4ee5\u4e0b\u306e\u5206\u5c90\u3092\u884c\u3063\u3066\u3044\u308b\u3002<br \/>\n *     if (amount == 0) {<br \/>\n *         return;<br \/>\n *     }<br \/>\n *<br \/>\n * @param cal \u65e5\u4ed8\u6642\u523b\u306e\u6307\u5b9a\u304c\u3042\u308c\u3070\u30bb\u30c3\u30c8\u3059\u308b\u3002<br \/>\n *     null\u306e\u5834\u5408\u3001\u73fe\u5728\u306e\u65e5\u4ed8\u6642\u523b\u3067\u65b0\u3057\u3044Calendar\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u3002<br \/>\n * @param addYera \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u5e74\u6570<br \/>\n * @param addMonth \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u6708\u6570<br \/>\n * @param addDate \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u65e5\u6570<br \/>\n * @param addHour \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u6642\u9593<br \/>\n * @param addMinute \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u5206<br \/>\n * @param addSecond \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u79d2<br \/>\n * @param addMillisecond \u52a0\u7b97\u30fb\u6e1b\u7b97\u3059\u308b\u30df\u30ea\u79d2<br \/>\n * @return    \u8a08\u7b97\u5f8c\u306e Calendar \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3002<br \/>\n *\/<br \/>\npublic static Calendar add(Calendar cal,<br \/>\n                           int addYera,int addMonth,int addDate,<br \/>\n                           int addHour,int addMinute,int addSecond,<br \/>\n                           int addMillisecond){<br \/>\n    if (cal == null) {<br \/>\n        cal = Calendar.getInstance();<br \/>\n    }<br \/>\n    cal.add(Calendar.YEAR, addYera);<br \/>\n    cal.add(Calendar.MONTH, addMonth);<br \/>\n    cal.add(Calendar.DATE, addDate);<br \/>\n    cal.add(Calendar.HOUR_OF_DAY, addHour);<br \/>\n    cal.add(Calendar.MINUTE, addMinute);<br \/>\n    cal.add(Calendar.SECOND, addSecond);<br \/>\n    cal.add(Calendar.MILLISECOND, addMillisecond);<br \/>\n    return cal;<br \/>\n}<br \/>\n<\/textarea><br \/>\n<\/p>\n<h2 class=\"common_title\"><a name=\"3\">\uc2e4\ud589<\/a><\/h2>\n<p>\n\uc0d8\ud50c \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c\ub294 \ub9ac\ud134\uac12\uc73c\ub85c<strong>\uacc4\uc0b0 \ud6c4<\/strong>\uc758 \uc77c\uc790\ub97c \ubcf4\uad00 \uc720\uc9c0\ud558\ub294 java.util.Calendar \uac1d\uccb4\ub97c \ucde8\ub4dd\ud560 \uc218 \uc788\uc73c\ubbc0\ub85c, java.util.Calendar#getTime() \uba54\uc18c\ub4dc\uc5d0 \uc758\ud574, java.util.Date\ub85c \ubcc0\ud658\ud574 java.text.SimpleDateFormat \uc5d0 \uc758\ud574 \uc77c\uc790 \uce90\ub9ad\ud130 \ub77c\uc778\uc73c\ub85c \ubcc0\ud658\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.\n<\/p>\n<p>\u25c6\uc2e4\ud589\uc608<\/p>\n<pre class=\"sample_src\">public static void main(String[] args) { SimpleDateFormat f = new SimpleDateFormat(&quot;yyyy\/MM\/dd HH:mm:ss&quot;); System.out.println(&quot;\ud604\uc7ac \ub0a0\uc9dc\/\uc2dc\uac04 = &quot;+ f.format( add(null,0,0,0,0,0,0,0).getTime())); System.out.println(&quot;1\ub144 \ud6c4 \ub0a0\uc9dc \ubc0f \uc2dc\uac04 = &quot;+ f.format(addYera(1) .getTime())); System.out.println(&quot;1\uac1c\uc6d4 \uc804 \ub0a0\uc9dc\/\uc2dc\uac04 = &quot;+ f.format(addMonth(-1).getTime())); System.out.println(&quot;3\uc2dc\uac04 \ud6c4 \ub0a0\uc9dc\/\uc2dc\uac04 = &quot;+ f.format(addHour(3).getTime())); System.out.println(&quot;30\uc2dc\uac04 \uc804 \ub0a0\uc9dc\/\uc2dc\uac04 = &quot;+ f.format(addHour(-30).getTime) ())); System.out.println(&quot;40\ubd84 \ud6c4 \ub0a0\uc9dc\/\uc2dc\uac04 = &quot;+ f.format(addMinute(40).getTime())); System.out.println(&quot;80\ucd08 \ud6c4 \ub0a0\uc9dc time = &quot;+ f.format(addSecond(80).getTime())); -1,4,0,0,0,0).getTime())); }\r\n<\/pre>\n<p>\u25c6\uc2e4\ud589 \uacb0\uacfc<br \/>\n\ud604\uc7ac \ub0a0\uc9dc \uc2dc\uac04\uc740 2008\/03\/25 00:00:00\uc785\ub2c8\ub2e4.<\/p>\n<pre class=\"console\">\ud604\uc7ac \ub0a0\uc9dc \/ \uc2dc\uac04 = 2008\/03\/25 00:00:00 1 \ub144 \ud6c4 \ub0a0\uc9dc \/ \uc2dc\uac04 = 2009\/03\/25 00:00:00 1 \uac1c\uc6d4 \uc804 \ub0a0\uc9dc \/ \uc2dc\uac04 = 2008\/02\/25 00:00 :00 3\uc2dc\uac04 \ud6c4\uc758 \ub0a0\uc9dc\u30fb\uc2dc\uac04 = 2008\/03\/25 03:00:00 30\uc2dc\uac04 \uc804\uc758 \ub0a0\uc9dc\u30fb\uc2dc\uac04 = 2008\/03\/23 18:00:00 40\ubd84 \ud6c4\uc758 \ub0a0\uc9dc\u30fb\uc2dc\uac04 = 2008\/03\/ 25 00:40:00 80\ucd08 \ud6c4\uc758 \ub0a0\uc9dc\u30fb\uc2dc\uac04 = 2008\/03\/25 00:01:20 1\uac1c\uc6d4 \uc804\ubd80\ud130, 4\uc77c \ud6c4\uc758 \ub0a0\uc9dc\u30fb\uc2dc\uac04 = 2008\/02\/29\r\n<\/pre>\n<p>\u203b2008\ub144\uc740 \uc724\ub144 \ub54c\ubb38\uc5d0 2\uc6d4\uc758 \uc6d4\ub9d0 \uc77c\uc790\ub294 29\uc77c\uc774 \ub429\ub2c8\ub2e4.<\/p>\n<p>\uc774 \uc0d8\ud50c \ud504\ub85c\uadf8\ub7a8\uc740 Chat &amp; Messenger\uc758 &quot;<a href=\"https:\/\/chat-messenger.com\/ko\/manual\/schedule_calendar\/calendar\/\" title=\"\uce98\ub9b0\ub354 \uc77c\uc815 \uad00\ub9ac \uae30\ub2a5\">\uce98\ub9b0\ub354 \uc77c\uc815 \uad00\ub9ac \uae30\ub2a5<\/a>&quot;\uc5d0\uc11c \uc2e4\uc81c\ub85c \uc0ac\uc6a9\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>Java \ub0a0\uc9dc\uc640 \uc2dc\uac04\uc758 \uacc4\uc0b0 \uac00\uc0b0\u00b7\uac10\uc0b0\uc774 \uac04\ub2e8\ud558\uac8c Java \ub85c \uac04\ub2e8\ud558\uac8c \uc77c\uc790\u00b7\uc2dc\uac04\uc758 \uac00\uc0b0\u00b7\uac10\uc0b0\uc744 \uacc4\uc0b0\ud558\ub294 \uc0d8\ud50c\ud504 [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":""},"categories":[19],"tags":[],"_links":{"self":[{"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/posts\/954"}],"collection":[{"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/comments?post=954"}],"version-history":[{"count":6,"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/posts\/954\/revisions"}],"predecessor-version":[{"id":1877,"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/posts\/954\/revisions\/1877"}],"wp:attachment":[{"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/media?parent=954"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/categories?post=954"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chat-messenger.com\/ko\/wp-json\/wp\/v2\/tags?post=954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}