{"author_url":"https://blog.hatena.ne.jp/irof/","provider_name":"Hatena Blog","blog_url":"https://irof.hateblo.jp/","published":"2025-03-01 12:18:00","provider_url":"https://hatena.blog","width":"100%","height":"190","categories":["Java"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Firof.hateblo.jp%2Fentry%2F2025%2F03%2F01%2F121800\" title=\"Java21\u306b\u4e0a\u3052\u305f\u3089\u30c6\u30b9\u30c8\u901a\u3089\u306a\u3044\u3093\u3060\u304c - \u65e5\u3005\u5e38\u3005\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"irof","type":"rich","version":"1.0","url":"https://irof.hateblo.jp/entry/2025/03/01/121800","image_url":null,"description":"\u307e\u3060Java17\u306e\u5b50\u304c\u3044\u305f\u306e\u3067\u3001\u96d1\u306bJava21\u306b\u4e0a\u3052\u3066\u307f\u305f\u3089\u30c6\u30b9\u30c8\u843d\u3061\u305f\u306e\u3002 \u300c\u306a\u3093\u3067\u305d\u3093\u306a\u3068\u3053\u843d\u3061\u3093\u306e\uff1f\u300d\u3063\u3066\u611f\u3058\u3060\u3063\u305f\u306e\u3067\u30e1\u30e2\u3002 \u4f55\u5909\u308f\u3063\u305f\u3093\u3060\u308d \u6b63\u898f\u8868\u73fe\u306e \\b \u306e\u6271\u3044\u304c\u5909\u308f\u3063\u3066\u305f\u3063\u307d\u3044\u3067\u3059\u3002 Java17\u3067\u3084\u308b\u3068\u3053\u3046\u3067\u3001 % jshell | JShell\u3078\u3088\u3046\u3053\u305d -- \u30d0\u30fc\u30b8\u30e7\u30f317.0.14 | \u6982\u8981\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044: /help intro jshell> \"\u3042\".matches(\".\\\\b\") $1 ==> true Java21\u3060\u3068\u3053\u3046\u306a\u308a\u307e\u3059\u3002 % jshell | JShell\u3078\u3088\u3046\u3053\u305d -- \u30d0\u30fc\u30b8\u30e7\u30f321.0.6 | \u6982\u8981\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u3092\u5165\u529b\u3057\u3066\u2026","title":"Java21\u306b\u4e0a\u3052\u305f\u3089\u30c6\u30b9\u30c8\u901a\u3089\u306a\u3044\u3093\u3060\u304c","blog_title":"\u65e5\u3005\u5e38\u3005"}