{"description":"\u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u306a\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3055\u308c\u305f\u30b3\u30fc\u30c9\u3092\u3088\u304f\u76ee\u306b\u3059\u308b\u3002 class Singleton { private volatile static Singleton instance; public static Singleton getInstance() { if (instance == null) { synchronized(Singleton.class) { if (instance == null) { instance = new Singleton(); //(1) } } } return instance; } \u3053\u308c\u306f\u3001\uff11\u5ea6\u3057\u304binstance\u3092\u751f\u2026","title":" \u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u3068\u9045\u5ef6\u521d\u671f\u5316","height":"190","categories":["java"],"type":"rich","blog_url":"https://kenmaz.hatenadiary.jp/","url":"https://kenmaz.hatenadiary.jp/entry/20091102/1257175621","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","blog_title":"kenmaz\u306e\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkenmaz.hatenadiary.jp%2Fentry%2F20091102%2F1257175621\" title=\" \u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u3068\u9045\u5ef6\u521d\u671f\u5316 - kenmaz\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2009-11-02 00:27:01","image_url":null,"version":"1.0","author_name":"kenmaz","author_url":"https://blog.hatena.ne.jp/kenmaz/","width":"100%"}