{"height":"190","provider_url":"https://hatena.blog","title":"Scala\u3067override\u3057\u305f\u969b\u306e\u5171\u5909\u623b\u308a\u5024\u578b\u3068\u578b\u63a8\u8ad6","type":"rich","url":"https://xuwei-k.hatenablog.com/entry/2023/09/13/124352","author_url":"https://blog.hatena.ne.jp/xuwei/","width":"100%","image_url":null,"blog_title":"xuwei-k's blog","provider_name":"Hatena Blog","version":"1.0","author_name":"xuwei","blog_url":"https://xuwei-k.hatenablog.com/","published":"2023-09-13 12:43:52","categories":["scala"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fxuwei-k.hatenablog.com%2Fentry%2F2023%2F09%2F13%2F124352\" title=\"Scala\u3067override\u3057\u305f\u969b\u306e\u5171\u5909\u623b\u308a\u5024\u578b\u3068\u578b\u63a8\u8ad6 - xuwei-k&#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>","description":"Scala\u3067\u3082Java\u3067\u3082\u3001override\u3059\u308b\u969b\u306b\u3001sub type\u3067override\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002 (\u3059\u3054\u304f\u53e4\u30441.4\u4ee5\u524d\u306eJava\u3067\u306f\u4e0d\u53ef\u80fd\u3060\u3063\u305f\u306f\u305a\u3060\u304c) Java\u306e\u4ed5\u69d8\u66f8\u3067\u82f1\u8a9e\u3060\u3068 covariant return type \u3068\u3044\u3046\u306f\u305a\uff1f\u306e\u6a5f\u80fd\u3067\u3059\u3002"}