{"provider_name":"Hatena Blog","image_url":null,"blog_title":"A Memorandum","url":"https://blog1.mammb.com/entry/2016/02/23/224415","author_url":"https://blog.hatena.ne.jp/Naotsugu/","version":"1.0","published":"2016-02-23 22:44:15","author_name":"Naotsugu","title":"Java \u306e Optional \u306f Serializable \u3067\u306f\u306a\u3044","width":"100%","provider_url":"https://hatena.blog","blog_url":"https://blog1.mammb.com/","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog1.mammb.com%2Fentry%2F2016%2F02%2F23%2F224415\" title=\"Java \u306e Optional \u306f Serializable \u3067\u306f\u306a\u3044 - A Memorandum\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["Java"],"description":"Java \u306e Opional \u306f\u95a2\u6570\u306e\u623b\u308a\u5024\u3068\u3057\u3066\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u7126\u70b9\u304c\u5f53\u3066\u3089\u308c\u3066\u3044\u308b\u305f\u3081\u3001Serializable \u3067\u306f\u306a\u3044\u3002 \u3088\u3063\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u305f\u308a\u3001 private Optional<String> name; \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306b\u5165\u308c\u305f\u308a\u3001 List<Optional<String>> list; \u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3067\u53d7\u3051\u305f\u308a\u3001 public void foo(Optional<String> param) { \u30fb\u30fb\u30fb } \u3068\u3044\u3063\u305f\u4f7f\u3044\u65b9\u306f\u8a2d\u8a08\u610f\u56f3\u306b\u53cd\u3059\u308b\u3002 Optional \u306f\u3042\u304f\u307e\u3067\u3082\u3001\u95a2\u6570\u306e\u623b\u308a\u5024\u304c\u7a7a\u304b\u3082\u3057\u308c\u306a\u3044 \u3068\u3044\u3046\u610f\u56f3\u3092\u8868\u73fe\u3059\u308b\u3082\u306e\u3067\u3042\u308b\u3002","height":"190"}