{"published":"2010-02-25 01:14:31","blog_title":"IT\u6226\u8a18","image_url":"http://serif.hatelabo.jp/images/cache/a2504c7ccb748c24565b1feb73f6bf2192e81383/97425c21b5d7654724f239129dc90473ac9ea988.gif","width":"100%","url":"https://amachang.hatenablog.com/entry/20100225/1267114471","height":"190","type":"rich","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Famachang.hatenablog.com%2Fentry%2F20100225%2F1267114471\" title=\" Effective Java \u8aad\u66f8\u4f1a 8 \u65e5\u76ee \u300c\u305d\u308c enum \u3067\u51fa\u6765\u308b\u3088\u300d - IT\u6226\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"amachang","categories":["Java"],"author_url":"https://blog.hatena.ne.jp/amachang/","provider_url":"https://hatena.blog","title":" Effective Java \u8aad\u66f8\u4f1a 8 \u65e5\u76ee \u300c\u305d\u308c enum \u3067\u51fa\u6765\u308b\u3088\u300d","provider_name":"Hatena Blog","description":"\u306f\u3058\u3081\u306b \u4eca\u65e5\u8aad\u3093\u3060\u3068\u3053\u308d 143 \u30da\u30fc\u30b8\u301c 159 \u30da\u30fc\u30b8 \u524d\u56de\u306f\u3053\u3061\u3089 Effective Java \u8aad\u66f8\u4f1a 7 \u65e5\u76ee \u300cPECS! PECS! PECS!\u300d - IT\u6226\u8a18 int \u5b9a\u6570\u3068\u304b\u4f7f\u308f\u306a\u3044 \u578b\u5b89\u5168\u3058\u3083\u306a\u3044\u304b\u3089 enum \u4f7f\u3046 enum Hoge { FOO, BAR; } \u7c21\u5358 \u30e1\u30bd\u30c3\u30c9\u3082\u6301\u3066\u308b enum Hoge { FOO, BAR; void a() { /* (snip) */ } } \u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4f7f\u3046 Hoge.FOO.a(); \u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u3082 \u6700\u8fd1\u306e Java \u3067\u306f enum \u3067\u3084\u308b\u3089\u3057\u3044\uff01 switch \u6587\u306e\u4ee3\u308f\u308a\u306b\u56fa\u6709\u30e1\u30bd\u30c3\u30c9 enum Hoge { FOO \u2026","blog_url":"https://amachang.hatenablog.com/"}