{"id":189,"date":"2023-02-11T05:38:37","date_gmt":"2023-02-09T06:42:33","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/java%e3%81%aesimpledateformat%e3%81%af%e3%80%81java%e3%81%ae%e6%97%a5%e4%bb%98%e5%bd%a2%e5%bc%8f%e3%81%a7%e3%81%99%e3%80%82\/"},"modified":"2024-03-19T23:09:13","modified_gmt":"2024-03-19T14:09:13","slug":"java%e3%81%aesimpledateformat%e3%81%af%e3%80%81java%e3%81%ae%e6%97%a5%e4%bb%98%e5%bd%a2%e5%bc%8f%e3%81%a7%e3%81%99%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%aesimpledateformat%e3%81%af%e3%80%81java%e3%81%ae%e6%97%a5%e4%bb%98%e5%bd%a2%e5%bc%8f%e3%81%a7%e3%81%99%e3%80%82\/","title":{"rendered":"Java\u306eSimpleDateFormat\u306f\u3001Java\u306e\u65e5\u4ed8\u5f62\u5f0f\u3067\u3059\u3002"},"content":{"rendered":"<h3>\u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3<\/h3>\n<p>Java\u306eSimpleDateFormat\u3068DateFormat\u30af\u30e9\u30b9\u306f\u3001\u65e5\u4ed8\u306e\u66f8\u5f0f\u8a2d\u5b9a\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001Java\u306e\u65e5\u4ed8\u3068\u6642\u523b\u306e\u6a5f\u80fd\u3092\u8868\u793a\u3084\u5229\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u6240\u3067\u4e3b\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30af\u30e9\u30b9\u306f\u3001com.text\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>Java\u306eDateFormat<\/h2>\n<ul class=\"post-ul\">\n<li>DateFormat is used for formatting a date into String based on specific locale that is provided as input.<\/li>\n<li>The locale is used for specifying the region and language for making the code more locale to the user.<\/li>\n<li>The way of writing date is different in different regions of the world. For example, 31st Dec 2017 will be written in India as 31-12-2017 but the same thing will be written in the United States of America as 12-31-2017.<\/li>\n<li>DateFormat classes are not synchronized, it\u2019s recommended to create separate instance for each thread.<\/li>\n<\/ul>\n<p>DateFormat\u30af\u30e9\u30b9\u306egetDateInstance()\u30e1\u30bd\u30c3\u30c9\u3068getTimeInstance()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001DateFormat\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">Locale<\/span> loc <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"en\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"US\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">DateFormat<\/span> dateFormat <span class=\"token operator\">=<\/span> <mark><span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getDateInstance<\/span><span class=\"token punctuation\">(<\/span><\/mark><span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">DEFAULT<\/span><span class=\"token punctuation\">,<\/span> loc<mark><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">Note<\/p>\n<div>\u6ce8\uff1a\u30d0\u30fc\u30b8\u30e7\u30f319\u4ee5\u964d\u3001Locale(String, String)\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u975e\u63a8\u5968\u3067\u3059\u3002<br \/>\nLocale loc = new Locale.Builder().setLanguage(&#8220;en&#8221;).setRegion(&#8220;US&#8221;).build();<\/div>\n<\/div>\n<p>DateFormat\u306egetDateInstance\u30e1\u30bd\u30c3\u30c9\u306f\u30012\u3064\u306e\u5165\u529b\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u5fc5\u8981\u3067\u3059\u3002\u6700\u521d\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u4f7f\u7528\u3059\u308bDateFormat\u3092\u6307\u5b9a\u3057\u30012\u756a\u76ee\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u30ed\u30b1\u30fc\u30eb\u3067\u3059\u3002<\/p>\n<h3>\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u4ee5\u4e0b\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u30aa\u30d7\u30b7\u30e7\u30f3\u306f1\u3064\u3060\u3051\u5fc5\u8981\u3067\u3059\u3002<\/h3>\n<p>\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u5229\u7528\u3057\u3066\u3001\u4e0b\u8a18\u306e\u5185\u5bb9\u3092\u65e5\u672c\u8a9e\u306b\u81ea\u7136\u306a\u8868\u73fe\u3067\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u4e00\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3060\u3051\u3092\u793a\u3057\u3066\u3044\u305f\u3060\u3051\u308c\u3070\u7d50\u69cb\u3067\u3059\u3002<\/p>\n<p>DateFormat\u30af\u30e9\u30b9\u306b\u306f\u3001\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u62c5\u5f53\u3059\u308bformat\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">Locale<\/span> locale <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"fr\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"FR\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">DateFormat<\/span> dateFormat <span class=\"token operator\">=<\/span> <span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getDateInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">DEFAULT<\/span><span class=\"token punctuation\">,<\/span> locale<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">String<\/span> date <span class=\"token operator\">=<\/span> dateFormat<span class=\"token punctuation\">.<\/span><mark><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><\/mark><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><mark><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u65e5\u4ed8\u3092\u30d5\u30e9\u30f3\u30b9\u8a9e\uff08fr\uff09\u3067\u8868\u793a\u3057\u3001\u30d5\u30e9\u30f3\u30b9\uff08FR\uff09\u5730\u57df\u306e\u5f62\u5f0f\u306b\u6574\u3048\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>3 janv. 2018<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<h3>getTimeInstance() \u3092\u4f7f\u7528<\/h3>\n<p>DateFormat\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u3001getDateInstance()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6642\u9593\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u6642\u9593\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u5fc5\u8981\u3067\u3059\u3002\u6642\u9593\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u306f\u3001getTimeInstance()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">Locale<\/span> locale <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"fr\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"FR\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">DateFormat<\/span> dateFormat <span class=\"token operator\">=<\/span> <span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><mark><span class=\"token function\">getTimeInstance<\/span><span class=\"token punctuation\">(<\/span><\/mark><span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">DEFAULT<\/span><span class=\"token punctuation\">,<\/span> locale<mark><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">String<\/span> date <span class=\"token operator\">=<\/span> dateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u30d5\u30e9\u30f3\u30b9\u8a9e\uff08fr\uff09\u306e\u8a00\u8a9e\u3068\u30d5\u30e9\u30f3\u30b9\uff08FR\uff09\u306e\u5730\u57df\u3067\u6642\u9593\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>11:03:01<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<h2>Java\u306eSimpleDateFormat<\/h2>\n<p>SimpleDateFormat\u306fDateFormat\u306b\u985e\u4f3c\u3057\u3066\u3044\u307e\u3059\u3002\u4e21\u8005\u306e\u4e3b\u306a\u9055\u3044\u306f\u3001SimpleDateFormat\u306f\u30ed\u30b1\u30fc\u30eb\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u6301\u3064\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\uff08\u65e5\u4ed8\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\uff09\u3068\u89e3\u6790\uff08\u6587\u5b57\u5217\u3092\u65e5\u4ed8\u306b\u5909\u63db\u3059\u308b\uff09\u306b\u4f7f\u7528\u3067\u304d\u308b\u70b9\u3067\u3059\u304c\u3001DateFormat\u306f\u30ed\u30b1\u30fc\u30eb\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u6301\u3061\u307e\u305b\u3093\u3002DateFormat\u306f\u65e5\u4ed8\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3068\u89e3\u6790\u306e\u57fa\u672c\u7684\u306a\u30b5\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u62bd\u8c61\u30af\u30e9\u30b9\u3067\u3059\u3002SimpleDateFormat\u306f\u305d\u308c\u3092\u62e1\u5f35\u3057\u305f\u5177\u8c61\u30af\u30e9\u30b9\u3067\u3059\u3002<\/p>\n<p>SimpleDateFormat\u306fSimpleDateFormat\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u4f7f\u7528\u3057\u3066\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u30d1\u30e9\u30e1\u30fc\u30bf\u5316\u3055\u308c\u305f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u3042\u308a\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u6587\u5b57\u5217\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"MM-dd-yyyy\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <mark><span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span><\/mark>pattern<mark><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u300cString\u306e\u30d1\u30bf\u30fc\u30f3\u300d\u306f\u3001\u65e5\u4ed8\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u4f7f\u308f\u308c\u308b\u30d1\u30bf\u30fc\u30f3\u3067\u3042\u308a\u3001\u51fa\u529b\u306f\u300cMM-dd-yyyy\u300d\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u30d1\u30bf\u30fc\u30f3<\/h3>\n<p>\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30d1\u30bf\u30fc\u30f3\u306b\u4f7f\u7528\u3059\u308b\u3079\u304d\u30d1\u30bf\u30fc\u30f3\u69cb\u6587\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>Letter for Pattern<\/th>\n<th>Date or Time component<\/th>\n<th>Examples<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>G<\/td>\n<td>Era designator<\/td>\n<td>AD<\/td>\n<\/tr>\n<tr>\n<td>y<\/td>\n<td>Year<\/td>\n<td>2018 (yyyy), 18 (yy)<\/td>\n<\/tr>\n<tr>\n<td>M<\/td>\n<td>Month in year<\/td>\n<td>July (MMMM), Jul (MMM), 07 (MM)<\/td>\n<\/tr>\n<tr>\n<td>w<\/td>\n<td>Results in week in year<\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td>W<\/td>\n<td>Results in week in month<\/td>\n<td>3<\/td>\n<\/tr>\n<tr>\n<td>D<\/td>\n<td>Gives the day count in the year<\/td>\n<td>266<\/td>\n<\/tr>\n<tr>\n<td>d<\/td>\n<td>Day of the month<\/td>\n<td>09 (dd), 9(d)<\/td>\n<\/tr>\n<tr>\n<td>F<\/td>\n<td>Day of the week in month<\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td>E<\/td>\n<td>Day name in the week<\/td>\n<td>Tuesday, Tue<\/td>\n<\/tr>\n<tr>\n<td>u<\/td>\n<td>Day number of week where 1 represents Monday, 2 represents Tuesday and so on<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>a<\/td>\n<td>AM or PM marker<\/td>\n<td>AM<\/td>\n<\/tr>\n<tr>\n<td>H<\/td>\n<td>Hour in the day (0-23)<\/td>\n<td>12<\/td>\n<\/tr>\n<tr>\n<td>k<\/td>\n<td>Hour in the day (1-24)<\/td>\n<td>23<\/td>\n<\/tr>\n<tr>\n<td>K<\/td>\n<td>Hour in am\/pm for 12 hour format (0-11)<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>h<\/td>\n<td>Hour in am\/pm for 12 hour format (1-12)<\/td>\n<td>12<\/td>\n<\/tr>\n<tr>\n<td>m<\/td>\n<td>Minute in the hour<\/td>\n<td>59<\/td>\n<\/tr>\n<tr>\n<td>s<\/td>\n<td>Second in the minute<\/td>\n<td>35<\/td>\n<\/tr>\n<tr>\n<td>S<\/td>\n<td>Millisecond in the minute<\/td>\n<td>978<\/td>\n<\/tr>\n<tr>\n<td>z<\/td>\n<td>Timezone<\/td>\n<td>Pacific Standard Time; PST; GMT-08:00<\/td>\n<\/tr>\n<tr>\n<td>Z<\/td>\n<td>Timezone offset in hours (RFC pattern)<\/td>\n<td>-0800<\/td>\n<\/tr>\n<tr>\n<td>X<\/td>\n<td>Timezone offset in ISO format<\/td>\n<td>-08; -0800; -08:00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p>\u6708\u3068\u3044\u3046\u8a00\u8449\u306e\u4f7f\u3044\u65b9\u306b\u306f\u3001\u7d50\u679c\u304c\u7570\u306a\u308b\u5834\u5408\u3067\u3082\u3001\u7570\u306a\u308b\u91cf\u306e\u6587\u5b57\u304c\u4f7f\u308f\u308c\u308b\u3079\u304d\u3067\u3059\u3002<\/p>\n<div>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>Type<\/th>\n<th>Pattern<\/th>\n<th>Example Output<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Full Month<\/td>\n<td><code>MMMM<\/code><\/td>\n<td>July<\/td>\n<\/tr>\n<tr>\n<td>Abbreviated Month<\/td>\n<td><code>MMM<\/code><\/td>\n<td>Jul<\/td>\n<\/tr>\n<tr>\n<td>Numeric Month<\/td>\n<td><code>MM<\/code><\/td>\n<td>07<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h4>\u4ee5\u4e0b\u306e\u4f8b\u6587\u3092\u65e5\u672c\u8a9e\u3067\u81ea\u7136\u306a\u8a00\u3044\u65b9\u306b\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u30021\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u5fc5\u8981\u3067\u3059\uff1a<\/h4>\n<p>\u4f8b\uff1a<br \/>\n1. I like to eat sushi.<\/p>\n<p>\u7b54\u3048\uff1a<br \/>\n1. \u5bff\u53f8\u3092\u98df\u3079\u308b\u306e\u304c\u597d\u304d\u3067\u3059\u3002<\/p>\n<p>\u3055\u3042\u3001\u65e5\u4ed8\u3068\u6642\u9593\u306e\u7570\u306a\u308b\u5f62\u5f0f\u306e\u3044\u304f\u3064\u304b\u306e\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>Pattern<\/th>\n<th>Result<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code>MM\/dd\/yyyy<\/code><\/td>\n<td>01\/02\/2018<\/td>\n<\/tr>\n<tr>\n<td><code>dd-M-yyyy hh:mm:ss<\/code><\/td>\n<td>02-1-2018 06:07:59<\/td>\n<\/tr>\n<tr>\n<td><code>dd MMMM yyyy<\/code><\/td>\n<td>02 January 2018<\/td>\n<\/tr>\n<tr>\n<td><code>dd MMMM yyyy zzzz<\/code><\/td>\n<td>02 January 2018 India Standard Time<\/td>\n<\/tr>\n<tr>\n<td><code>E, dd MMM yyyy HH:mm:ss z<\/code><\/td>\n<td>Tue, 02 Jan 2018 18:07:59 IST<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h3>SimpleDateFormat()\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/h3>\n<p>\u65e5\u4ed8\u3092\u89e3\u6790\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u4f7f\u7528\u3057\u3066SimpleDateFormat\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u5f8cformat()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"MM-dd-yyyy\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">String<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u300cMM-dd-yyyy\u300d\u3068\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>01-02-2018<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u3001&#8221;\u5e74\u306e\u4e2d\u306e\u6708&#8221;\u3001&#8221;\u6708\u306e\u4e2d\u306e\u65e5&#8221;\u3001\u304a\u3088\u3073&#8221;\u5e74&#8221;\u3092\u51fa\u529b\u3057\u307e\u3059\u3002\u6587\u5b57\u306e\u7a2e\u985e\uff08\u5927\u6587\u5b57\u3068\u5c0f\u6587\u5b57\uff09\u3084\u6587\u5b57\u6570\u306f\u3001\u6587\u5b57\u5217\u306b\u5bc4\u4e0e\u3057\u307e\u3059\u3002\u6708\u306f2\u6841\u3001\u65e5\u306f2\u6841\u3001\u5e74\u306f4\u6841\u3067\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u300c2018\u5e741\u67082\u65e5\u300d\u306e\u65e5\u4ed8\u3092\u300c01-02-2018\u300d\u3068\u8868\u793a\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u6642\u9593\u306e\u89e3\u6790\u306e\u305f\u3081\u306b\u3001SimpleDateFormat\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u4f5c\u6210\u6642\u306b\u30d1\u30bf\u30fc\u30f3\u3092\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"HH:mm:ss.SSSZ\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">String<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u300cHH:mm:ss.SSSZ\u300d\u3092\u51fa\u529b\u3057\u307e\u3059\u3002 (Kono k\u014ddo wa &#8220;HH:mm:ss.SSSZ&#8221; o shutsuryoku shimasu.)<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>13:03:15.454+0530<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u300c\u6642\u9593\u300d\u300c\u5206\u300d\u300c\u79d2\u300d\u300c\u30df\u30ea\u79d2\u300d\u3068\u300c\u6642\u5dee\u30aa\u30d5\u30bb\u30c3\u30c8\uff08RFC\u30d1\u30bf\u30fc\u30f3\uff09\u300d\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u6642\u9593\u3092\u300c13:03:15.454+0530\u300d\u3068\u3057\u3066\u8868\u793a\u3057\u307e\u3057\u305f\u3002<\/p>\n<h3>parse() \u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<\/h3>\n<p>\u89e3\u6790\u3068\u306f\u3001String\u3092java.util.Date\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u3067\u3059\u3002SimpleDateFormat\u30af\u30e9\u30b9\u306eparse()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u6587\u5b57\u5217\u3092\u65e5\u4ed8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u89e3\u6790\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002String\u3092Date\u306b\u89e3\u6790\u3059\u308b\u305f\u3081\u306b\u306f\u3001SimpleDateFormat\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u5165\u529b\u3068\u3057\u3066\u306e\u6587\u5b57\u5217\u30d1\u30bf\u30fc\u30f3\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"MM-dd-yyyy\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">Date<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">parse<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"12-01-2018\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u306f\u6307\u5b9a\u3055\u308c\u305f\u6642\u523b\u306a\u3057\u3067\u65e5\u4ed8 (12-01-2018) \u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Sat Dec 01 00:00:00 IST 2018<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4eca\u5ea6\u306f\u3001\u6642\u9593\u3092\u89e3\u6790\u3059\u308b\u305f\u3081\u306eSimpleDateFormat\u306e\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"HH:mm:ss\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">Date<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">parse<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"22:00:03\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u65e5\u4ed8\u306a\u3057\u3067\u3001\u6642\u523b (22:00:03) \u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Thu Jan 01 22:00:03 IST 1970<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u65e5\u4ed8\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u30a8\u30dd\u30c3\u30af\u3092\u65e5\u4ed8\u3068\u3057\u3066\u8003\u616e\u3057\u307e\u3057\u305f\uff08\u3064\u307e\u308a\u30011970\u5e741\u67081\u65e5\uff09\u3002<\/p>\n<h3>\u30ed\u30b1\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b<\/h3>\n<p>\u79c1\u305f\u3061\u306f\u3001DateFormat\u306e\u4e00\u90e8\u3068\u3057\u3066Locale\u3068\u4e00\u7dd2\u306b\u4f5c\u696d\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u30ed\u30b1\u30fc\u30eb\u306f\u5730\u57df\u306b\u57fa\u3065\u3044\u3066\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"EEEEE MMMMM yyyy HH:mm:ss.SSSZ\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"fr\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"FR\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">Date<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u73fe\u5728\u306e\u6642\u9593\u3092\u30d5\u30e9\u30f3\u30b9\u8a9e\uff08fr\uff09\u3067\u3001\u304a\u3088\u3073\u30d5\u30e9\u30f3\u30b9\uff08FR\uff09\u5730\u57df\u3067\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>mardi janvier 2018 14:51:02.354+0530<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30ed\u30b1\u30fc\u30eb\u306b\u57fa\u3065\u3044\u3066\u3001\u65e5\u4ed8\u3068\u6708\u306f\u30d5\u30e9\u30f3\u30b9\u8a9e\u3067\u540d\u524d\u304c\u4ed8\u3051\u3089\u308c\u307e\u3059\u3002mardi\u306f\u300c\u706b\u66dc\u65e5\u300d\u3092\u610f\u5473\u3057\u3001janvier\u306f\u300c1\u6708\u300d\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Java\u306eSimpleDateFormat\u3068DateFormat\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3057\u305f\u3002<\/p>\n<p>\u53c2\u7167\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>SimpleDateFormat API Doc<\/li>\n<li>DateFormat API Doc<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3 Java\u306eSimpleDateFormat\u3068DateFormat\u30af\u30e9\u30b9\u306f\u3001\u65e5\u4ed8\u306e\u66f8\u5f0f\u8a2d\u5b9a\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001Java\u306e\u65e5\u4ed8\u3068\u6642\u523b\u306e\u6a5f\u80fd\u3092\u8868\u793a\u3084\u5229\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u6240\u3067\u4e3b\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30af\u30e9 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-189","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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