{"blog_title":"\u6280\u8853\u958b\u767a\u65e5\u8a18","url":"https://kechanzahorumon.hatenadiary.com/entry/2015/03/13/175702","published":"2015-03-13 17:57:02","blog_url":"https://kechanzahorumon.hatenadiary.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkechanzahorumon.hatenadiary.com%2Fentry%2F2015%2F03%2F13%2F175702\" title=\"Java8\u306eOptional\u306e\u4f7f\u3044\u6240 - \u6280\u8853\u958b\u767a\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","description":"\u305d\u3082\u305d\u3082Optional\u3068\u306f Optional\u306fT\u578b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u3059\u308b\u30e9\u30c3\u30d1\u30fc\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u305f\u308a\u3001null\u3060\u3063\u305f\u5834\u5408\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308bJava8\u304b\u3089\u8ffd\u52a0\u3055\u308c\u305f\u30af\u30e9\u30b9\u3002 Null\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u8fd1\u3044\u611f\u3058\u3067\u3057\u3087\u3046\u304b\u3002 \u3069\u3046\u3044\u3063\u305f\u3068\u3053\u308d\u3067\u4f7f\u3046\u306e\u304b \u30fbStream\u30e1\u30bd\u30c3\u30c9\u306e\u8fd4\u5374\u5024\u3068\u3057\u3066Optional\u578b\u3092\u8fd4\u3059\u306e\u304c\u3044\u304f\u3064\u304b\u3042\u308b\u306e\u3067(findFirst,findAny,min,max,flatMap,etc...) \u305d\u306e\u8fd4\u5374\u5024\u306b\u5bfe\u3057\u3066\u51e6\u7406\u3092\u8ffd\u52a0\u3057\u305f\u3044\u3068\u304d\u3002\u30fb\u30e1\u30bd\u30c3\u30c9\u306e\u8fd4\u5374\u5024\u304cnull\u3067\u3042\u308b\u53ef\u80fd\u6027\u3092\u660e\u793a\u7684\u306b\u793a\u3057\u305f\u3044\u3068\u304d\u3002\u30fb\u7169\u308f\u3057\u3044null\u30c1\u30a7\u30c3\u30af\u306e\u51e6\u7406\u3092\u9664\u304d\u305f\u3044\u3068\u304d\u3002\u30fb\u2026","height":"190","version":"1.0","author_url":"https://blog.hatena.ne.jp/keichanzahorumon0405/","categories":["Java"],"width":"100%","author_name":"keichanzahorumon0405","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","image_url":null,"title":"Java8\u306eOptional\u306e\u4f7f\u3044\u6240"}