{"provider_name":"Hatena Blog","height":"190","provider_url":"https://hatena.blog","published":"2015-08-29 00:59:07","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhjm333.hatenablog.com%2Fentry%2F2015%2F08%2F29%2F005907\" title=\"\u3010Effective Java\u3011\u9805\u76ee\uff11\uff10\uff1atoString \u3092\u5e38\u306b\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3059\u308b - The King&#39;s Museum\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/hjm333/","width":"100%","version":"1.0","categories":["Effective Java","Java"],"author_name":"hjm333","blog_url":"https://hjm333.hatenablog.com/","description":"toString \u3092\u30aa\u30fc\u30d0\u30e9\u30a4\u30c9\u3057\u3066\u610f\u5473\u306e\u3042\u308b\u6587\u5b57\u5217\u3092\u8fd4\u3059\u3088\u3046\u306b\u3059\u308b\u3002 toString \u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9 java.lang.Object \u306f toString() \u3092\u5b9f\u88c5\u3057\u3066\u3044\u308b\u304c\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u3088\u3044\u60c5\u5831\u3092\u8fd4\u3059\u308f\u3051\u3067\u306f\u306a\u3044\u3002 Object obj = new Object(); // \u300c\u30af\u30e9\u30b9\u540d@\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u5024\u300d\u306e\u5f62\u5f0f\u3068\u306a\u308b obj.toString // => java.lang.Object@549d1e83 equals \u3084 hashCode \u306e\u4e00\u822c\u5951\u7d04\u307b\u3069\u306e\u91cd\u8981\u6027\u306f\u306a\u3044\u304c\u3001toString() \u306f\u305d\u306e\u30af\u30e9\u30b9\u3092\u4f7f\u3044\u3084\u3059\u304f\u3059\u308b\u3002 \u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b PhoneNumber \u306e t\u2026","type":"rich","image_url":null,"blog_title":"The King's Museum","title":"\u3010Effective Java\u3011\u9805\u76ee\uff11\uff10\uff1atoString \u3092\u5e38\u306b\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3059\u308b","url":"https://hjm333.hatenablog.com/entry/2015/08/29/005907"}