{"type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Firof.hateblo.jp%2Fentry%2F2024%2F05%2F11%2F235619\" title=\"2021\u5e74\u306eJava\u3068null\u306e\u8a71 - \u65e5\u3005\u5e38\u3005\" 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%","version":"1.0","published":"2024-05-11 23:56:19","title":"2021\u5e74\u306eJava\u3068null\u306e\u8a71","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/i/irof/20210421/20210421013620.png","categories":[],"author_url":"https://blog.hatena.ne.jp/irof/","url":"https://irof.hateblo.jp/entry/2024/05/11/235619","height":"190","blog_title":"\u65e5\u3005\u5e38\u3005","author_name":"irof","blog_url":"https://irof.hateblo.jp/","provider_url":"https://hatena.blog","description":"\u30d6\u30ed\u30b0\u306e\u4e0b\u66f8\u304d\u3092\u773a\u3081\u3066\u305f\u3089\u9577\u6587\u304c\u307f\u3064\u304b\u3063\u305f\u306e\u3067\u4f9b\u990a\u3057\u3066\u304a\u304d\u307e\u3059\u3002 TODO\u304cDO\u3055\u308c\u308b\u304b\u306f\u308f\u304b\u308a\u307e\u305b\u3093\u3002\u5fc3\u306e\u76ee\u3067\u898b\u3066\u304f\u3060\u3055\u3044\u3002 Java\u306b\u306f null \u304c\u3042\u3063\u3066\u3001\u3053\u306e\u5b50\u304c\u3044\u306a\u3044\u4e16\u754c\u304c\u3044\u3044\u3093\u3067\u3059\u3051\u3069\u3001\u3044\u306a\u304f\u306a\u3063\u305f\u308a\u306f\u3057\u3066\u304f\u308c\u306a\u3044\u306e\u3067\u3001\u4ed5\u65b9\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u3044\u3044\u611f\u3058\u306b\u4ed8\u304d\u5408\u3063\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u306d\u30fc\u3063\u3066\u8a71\u3092\u66f8\u304d\u307e\u3059\u3002\u95a2\u9023\u30a8\u30f3\u30c8\u30ea\u3068\u304b\u30b9\u30e9\u30a4\u30c9\u306f\u3053\u306e\u8fba\u3002 \u3075\u3064\u3046\u306eJava\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0 2017\u5e74\u306eJJUG CCC\u306e\u30b9\u30e9\u30a4\u30c9\u3002\u306a\u3093\u304b\u3044\u3044\u3053\u3068\u66f8\u3044\u3066\u308b\u3002 null\u304c\u5acc\u3044 2019\u5e74\u3001\u66f8\u3044\u305f\u306e\u306f2015\u5e74\u3060\u3063\u3066\u8a00\u3044\u8a33\u3057\u306a\u304c\u3089\u6295\u3052\u305f\u30dd\u30a8\u30e0\u3002 Optional\u306e\u53d6\u308a\u6271\u3044\u304b\u305f 2015\u5e74\u3001Java8\u3067\u767b\u5834\u3057\u305f Optiona\u2026","provider_name":"Hatena Blog"}