{"id":129070,"date":"2024-03-25T08:52:48","date_gmt":"2024-03-24T23:52:48","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e4%b9%b1%e6%95%b0%e3%82%92%e7%94%9f%e6%88%90%e3%81%99%e3%82%8b5%e3%81%a4%e3%81%ae%e6%96%b9%e6%b3%95\/"},"modified":"2024-04-05T10:46:46","modified_gmt":"2024-04-05T01:46:46","slug":"java%e3%81%a7%e4%b9%b1%e6%95%b0%e3%82%92%e7%94%9f%e6%88%90%e3%81%99%e3%82%8b5%e3%81%a4%e3%81%ae%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e4%b9%b1%e6%95%b0%e3%82%92%e7%94%9f%e6%88%90%e3%81%99%e3%82%8b5%e3%81%a4%e3%81%ae%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java\u3067\u4e71\u6570\u3092\u751f\u6210\u3059\u308b5\u3064\u306e\u65b9\u6cd5"},"content":{"rendered":"
    \n
  1. Math.random()\u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3057\u3066\u30010\uff5e1\u307e\u3067\u306e\u4e71\u6570\u3092\u751f\u6210\u3059\u308b<\/li>\n<\/ol>\n
    double<\/span> randomNum<\/span> =<\/span> Math.random();\r\n<\/code><\/pre>\n
      \n
    1. Random\u30af\u30e9\u30b9\u306enextInt()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u3001\u6307\u5b9a\u3057\u305f\u7bc4\u56f2\u306e\u4e71\u6570\u3092\u751f\u6210\u3059\u308b\u3002<\/li>\n<\/ol>\n
      Random<\/span> random<\/span> =<\/span> new<\/span> Random<\/span>();\r\nint<\/span> randomInt<\/span> =<\/span> random.nextInt(100<\/span>); \/\/ \u751f\u62100\u523099\u7684\u968f\u673a\u6574\u6570<\/span>\r\n<\/code><\/pre>\n
        \n
      1. ThreadLocalRandom\u30af\u30e9\u30b9\u306enextInt()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u6307\u5b9a\u7bc4\u56f2\u5185\u3067\u30e9\u30f3\u30c0\u30e0\u306a\u6574\u6570\u5024\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n
        int<\/span> randomInt<\/span> =<\/span> ThreadLocalRandom.current().nextInt(0<\/span>, 100<\/span>); \/\/ \u751f\u62100\u523099\u7684\u968f\u673a\u6574\u6570<\/span>\r\n<\/code><\/pre>\n
          \n
        1. SecureRandom\u30af\u30e9\u30b9\u306enextInt()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5b89\u5168\u306a\u4e71\u6570\u3092\u751f\u6210\u3059\u308b\uff1a<\/li>\n<\/ol>\n
          SecureRandom<\/span> random<\/span> =<\/span> new<\/span> SecureRandom<\/span>();\r\nint<\/span> randomInt<\/span> =<\/span> random.nextInt(100<\/span>); \/\/ \u751f\u62100\u523099\u7684\u5b89\u5168\u968f\u673a\u6574\u6570<\/span>\r\n<\/code><\/pre>\n
            \n
          1. Apache Commons Math\u30e9\u30a4\u30d6\u30e9\u30ea\u306eRandomDataGenerator\u30af\u30e9\u30b9\u3067\u6307\u5b9a\u3055\u308c\u305f\u7bc4\u56f2\u5185\u306e\u4e71\u6570\u3092\u751f\u6210\u3059\u308b\uff1a<\/li>\n<\/ol>\n
            RandomDataGenerator<\/span> randomDataGenerator<\/span> =<\/span> new<\/span> RandomDataGenerator<\/span>();\r\nint<\/span> randomInt<\/span> =<\/span> randomDataGenerator.nextInt(0<\/span>, 100<\/span>); \/\/ \u751f\u62100\u523099\u7684\u968f\u673a\u6574\u6570<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
            Math.random()\u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3057\u3066\u30010\uff5e1\u307e\u3067\u306e\u4e71\u6570\u3092\u751f\u6210\u3059\u308b double randomNum = Math.random(); Random\u30af\u30e9\u30b9\u306enextInt()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u3001\u6307\u5b9a\u3057\u305f\u7bc4\u56f2\u306e\u4e71\u6570\u3092\u751f […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-129070","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava\u3067\u4e71\u6570\u3092\u751f\u6210\u3059\u308b5\u3064\u306e\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u4e71\u6570\u3092\u751f\u6210\u3059\u308b5\u3064\u306e\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u3067\u4e71\u6570\u3092\u751f\u6210\u3059\u308b5\u3064\u306e\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Math.random()\u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3057\u3066\u30010\uff5e1\u307e\u3067\u306e\u4e71\u6570\u3092\u751f\u6210\u3059\u308b double randomNum = Math.random(); 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