kagasu https://blog.hatena.ne.jp/kagasu/ 備忘録 https://kagasu.hatenablog.com/ Java String uuid = UUID.randomUUID().toString(); // uuid = "9115d2c8-a3f4-4c4e-9c44-e65b6f483f90" long seed = Long.valueOf(uuid.substring(0, 8), 16); Random random = new Random(seed); // 0～9999 の乱数 Integer number1 = random.nextInt(10000); // 1～10000 の乱数 Integer number2 = random.nextInt(10000) + 1; 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkagasu.hatenablog.com%2Fentry%2F2016%2F12%2F25%2F231819" title="Java UUIDをシードにして乱数を発生させる - 備忘録" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2016-12-25 23:18:19 rich https://kagasu.hatenablog.com/entry/2016/12/25/231819 1.0 100%