{"url":"https://amachang.hatenablog.com/entry/20080415/1208229209","width":"100%","blog_url":"https://amachang.hatenablog.com/","height":"190","author_name":"amachang","blog_title":"IT\u6226\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Famachang.hatenablog.com%2Fentry%2F20080415%2F1208229209\" title=\" Java 5 \u306e\u578b\u63a8\u8ad6\u304c\u5206\u304b\u3089\u306a\u3044 - IT\u6226\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":" Java 5 \u306e\u578b\u63a8\u8ad6\u304c\u5206\u304b\u3089\u306a\u3044","version":"1.0","type":"rich","categories":["Java"],"author_url":"https://blog.hatena.ne.jp/amachang/","provider_name":"Hatena Blog","image_url":null,"description":"\u306a\u3093\u305e\u3053\u308c\uff1e\uff1c Java\u306e\u578b\u63a8\u8ad6Utils\u30af\u30e9\u30b9 - yukoba\u306e\u30d6\u30ed\u30b0 \u3063\u3066\u3053\u3068\u3067\u3084\u3063\u3066\u307f\u305f \u3053\u308c\u306f OK import java.util.ArrayList; import static java.lang.System.out; public class Main { public static <S, T> T cast(S o) { return (T) o; } public static void main(String[] args) { ArrayList a = new ArrayList(); ArrayList<String> b = cast(a); b.add(\u2026","published":"2008-04-15 12:13:29","provider_url":"https://hatena.blog"}