{"author_url":"https://blog.hatena.ne.jp/naosim/","provider_url":"https://hatena.blog","author_name":"naosim","type":"rich","published":"2018-02-14 07:00:00","blog_url":"https://naosim.hatenablog.jp/","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnaosim.hatenablog.jp%2Fentry%2F2018%2F02%2F14%2F070000\" title=\"Optional\u3092\u4f7f\u3046\u3068\u30ab\u30d0\u30ec\u30c3\u30b8\u7387\u304c\u4e0a\u304c\u308b\uff01 - \u306a\u304a\u3057\u3080\u8ad6\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","width":"100%","description":"\u30ab\u30d0\u30ec\u30c3\u30b8\u7387\u306b\u3064\u3044\u3066\u5b9f\u9a13\u3057\u3066\u307f\u308b \u30ab\u30d0\u30ec\u30c3\u30b8\u7387\u304c\u5fae\u5999\u306a\u30b3\u30fc\u30c9 \u307e\u305a\u4f8b\u984c\u3068\u3057\u3066\u3053\u3093\u306a\u30b3\u30fc\u30c9\u304c\u3042\u308b\u3068\u3059\u308b Hoge.java public class Hoge { public static String getOrNull(String str) { if(str == null) { return \"null\"; } return str; } } HogeTest.java public class HogeTest { @Test public void getOrNull() { assert Hoge.getOrNull(\"hello\") == \"hello\"; } } \u3053\u306e\u30c6\u30b9\u30c8\u306f\u2026","version":"1.0","url":"https://naosim.hatenablog.jp/entry/2018/02/14/070000","blog_title":"\u306a\u304a\u3057\u3080\u8ad6","categories":["java"],"title":"Optional\u3092\u4f7f\u3046\u3068\u30ab\u30d0\u30ec\u30c3\u30b8\u7387\u304c\u4e0a\u304c\u308b\uff01","image_url":null}