{"height":"190","author_name":"eller","blog_title":"Kengo's blog","categories":["original","java","Maven"],"provider_url":"https://hatena.blog","type":"rich","provider_name":"Hatena Blog","published":"2012-01-28 13:13:21","image_url":null,"url":"https://blog.kengo-toda.jp/entry/2012/01/28/131321","title":"Goodbye, checkNotNull","author_url":"https://blog.hatena.ne.jp/eller/","blog_url":"https://blog.kengo-toda.jp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.kengo-toda.jp%2Fentry%2F2012%2F01%2F28%2F131321\" title=\"Goodbye, checkNotNull - Kengo&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","description":"Precondition checking like null-checking is very important element for program, but sometimes it becomes boring because it's a defensive technique and far apart from our purpose -- hacking. null\u30c1\u30a7\u30c3\u30af\u306e\u3088\u3046\u306a\u524d\u63d0\u6761\u4ef6\u78ba\u8a8d\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u5927\u5207\u306a\u8981\u7d20\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u9632\u5fa1\u7684\u3067\u3042\u308a\u76ee\u7684\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u6642\u306b\u3064\u307e\u3089\u306a\u3044\u4f5c\u696d\u306b\u306a\u308a\u304c\u3061\u3067\u3059\u3002 public MyClass(String \u2026","version":"1.0"}