{"type":"rich","image_url":null,"height":"190","description":"\u518d\u5e30\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u3092\u7528\u3044\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u305f\u3068\u3059\u308b\u3002 Hoge\u3092\u7d99\u627f\u3057\u305f\u578b\u3092\u4f5c\u3063\u305f\u5834\u5408\u306b\u5177\u8c61\u578b\u3092\u5f97\u308bgetThis()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3048\u308b\u3088\u3046\u306b\u3057\u305f\u3044\u308f\u3051\u3060\u3002 public class Hoge<T extends Hoge<T>> { @SuppressWarnings(\"unchecked\") public T getThis() { return (T) this; } } \u3053\u306eHoge\u578b\u306eT\u306b\u578b\u3092\u30d0\u30a4\u30f3\u30c9\u3059\u308b\u306b\u306f\u7d99\u627f\u3092\u7528\u3044\u308b\u3002\u4e00\u90e8\u306e\u65b9\u306b\u306f\u304a\u306a\u3058\u307f\u3067\u3059\u306d\u3002 public class Piyo extends Hoge<Piyo> {} \u3053\u3046\u3057\u305f\u5834\u5408\u3001Piyo\u578b\u306b\u306f\u306a\u3093\u306e\u5b9f\u88c5\u3082\u884c\u3063\u3066\u3044\u306a\u2026","blog_url":"https://nagise.hatenablog.jp/","author_name":"Nagise","version":"1.0","author_url":"https://blog.hatena.ne.jp/Nagise/","categories":["Java","Generics"],"published":"2012-12-21 01:02:17","url":"https://nagise.hatenablog.jp/entry/20121221/1356105737","blog_title":"\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306e\u8133\u307f\u305d","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","title":" \u518d\u5e30\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u306ethis\u3068T\u306e\u4e92\u63db\u6027","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnagise.hatenablog.jp%2Fentry%2F20121221%2F1356105737\" title=\" \u518d\u5e30\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u306ethis\u3068T\u306e\u4e92\u63db\u6027 - \u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306e\u8133\u307f\u305d\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}