{"image_url":null,"width":"100%","title":"Java \u306e isLeapYear \u304c\u4f7f\u3048\u306a\u3044\u4ef6","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fredcat-prog.hatenadiary.org%2Fentry%2F20120515%2F1337021741\" title=\"Java \u306e isLeapYear \u304c\u4f7f\u3048\u306a\u3044\u4ef6 - \u4f3c\u975e\u30d7\u30ed\u30b0\u30e9\u30de\u306e\u899a\u3048\u66f8\u304d\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://redcat-prog.hatenadiary.org/","categories":["Java","Ruby"],"url":"https://redcat-prog.hatenadiary.org/entry/20120515/1337021741","published":"2012-05-15 03:55:41","version":"1.0","provider_name":"Hatena Blog","type":"rich","height":"190","description":"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u4e2d\u306b\u300c\u305d\u3046\u3044\u3084\u4eca\u5e74\u3063\u3066\u3046\u308b\u3046\u5e74\u3060\u3063\u3051\u300d\u3068\u3044\u3046\u5224\u5b9a\u3092\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\u306f\u307e\u307e\u3042\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002Java \u306e\u5834\u5408\u3001java.util.GregorianCalendar \u30af\u30e9\u30b9\u306b isLeapYear \u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u304c\u3044\u307e\u3044\u3061\u4f7f\u3044\u306b\u304f\u3044\u3002\u4f55\u6545\u304b\u3068\u3044\u3046\u3068 \u897f\u66a6\u3092\u6574\u6570\u578b\u3067\u5f15\u6570\u3068\u3057\u3066\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308b static \u30e1\u30bd\u30c3\u30c9\u3067\u306f\u306a\u304f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308b \u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u3064\u307e\u308a GregorianCalendar cal = new GregorianCalendar(); \u3067\u73fe\u5728\u306e\u6642\u523b\u3092\u53d6\u5f97\u3057\u3066\u3082\u7d50\u5c40 cal.isLeapYear(cal.get(Calenda\u2026","provider_url":"https://hatena.blog","author_name":"redcat_prog","author_url":"https://blog.hatena.ne.jp/redcat_prog/","blog_title":"\u4f3c\u975e\u30d7\u30ed\u30b0\u30e9\u30de\u306e\u899a\u3048\u66f8\u304d"}