{"id":111544,"date":"2024-03-22T18:41:33","date_gmt":"2024-03-22T09:41:33","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%8b%e6%96%b9%e6%b3%95\/"},"modified":"2024-03-28T09:56:33","modified_gmt":"2024-03-28T00:56:33","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%8b%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%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java \u3067\u4e71\u6570\u3092\u751f\u6210\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"

Java\u3067\u306f\u3001java.util.Random\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u4e71\u6570\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u305d\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n

    \n
  1. 0 \u304b\u3089 n \u307e\u3067\u306e\u7bc4\u56f2\u306e\u6574\u6570\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u751f\u6210\u3059\u308b<\/li>\n<\/ol>\n
    import<\/span> java.util.Random;\r\n\r\npublic<\/span> class<\/span> RandomNumberGenerator<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        int<\/span> n<\/span> =<\/span> 10<\/span>; \/\/ \u8303\u56f4\u4e0a\u9650<\/span>\r\n        Random<\/span> rand<\/span> =<\/span> new<\/span> Random<\/span>();\r\n        int<\/span> randomNumber<\/span> =<\/span> rand.nextInt(n); \/\/ \u751f\u6210\u968f\u673a\u6574\u6570<\/span>\r\n        System.out.println(randomNumber);\r\n    }\r\n}\r\n<\/code><\/pre>\n
      \n
    1. a\u304b\u3089b\u307e\u3067\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u6574\u6570\u3092\u751f\u6210\u3059\u308b<\/li>\n<\/ol>\n
      import<\/span> java.util.Random;\r\n\r\npublic<\/span> class<\/span> RandomNumberGenerator<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        int<\/span> a<\/span> =<\/span> 5<\/span>; \/\/ \u8303\u56f4\u4e0b\u9650<\/span>\r\n        int<\/span> b<\/span> =<\/span> 10<\/span>; \/\/ \u8303\u56f4\u4e0a\u9650<\/span>\r\n        Random<\/span> rand<\/span> =<\/span> new<\/span> Random<\/span>();\r\n        int<\/span> randomNumber<\/span> =<\/span> rand.nextInt(b - a + 1<\/span>) + a; \/\/ \u751f\u6210\u968f\u673a\u6574\u6570<\/span>\r\n        System.out.println(randomNumber);\r\n    }\r\n}\r\n<\/code><\/pre>\n
        \n
      1. 0\u304b\u30891\u306e\u7bc4\u56f2\u3067\u4e71\u6570\u3092\u751f\u6210\u3057\u307e\u3059<\/li>\n<\/ol>\n
        import<\/span> java.util.Random;\r\n\r\npublic<\/span> class<\/span> RandomNumberGenerator<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        Random<\/span> rand<\/span> =<\/span> new<\/span> Random<\/span>();\r\n        double<\/span> randomNumber<\/span> =<\/span> rand.nextDouble(); \/\/ \u751f\u6210\u968f\u673a\u6d6e\u70b9\u6570<\/span>\r\n        System.out.println(randomNumber);\r\n    }\r\n}\r\n<\/code><\/pre>\n
          \n
        1. \u3042\u308b\u7bc4\u56f2\u5185\u306e\u4e71\u6570\u3092\u751f\u6210\u3059\u308b\uff1a<\/li>\n<\/ol>\n
          import<\/span> java.util.Random;\r\n\r\npublic<\/span> class<\/span> RandomNumberGenerator<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        double<\/span> a<\/span> =<\/span> 0.5<\/span>; \/\/ \u8303\u56f4\u4e0b\u9650<\/span>\r\n        double<\/span> b<\/span> =<\/span> 1.5<\/span>; \/\/ \u8303\u56f4\u4e0a\u9650<\/span>\r\n        Random<\/span> rand<\/span> =<\/span> new<\/span> Random<\/span>();\r\n        double<\/span> randomNumber<\/span> =<\/span> a + (b - a) * rand.nextDouble(); \/\/ \u751f\u6210\u968f\u673a\u6d6e\u70b9\u6570<\/span>\r\n        System.out.println(randomNumber);\r\n    }\r\n}\r\n<\/code><\/pre>\n
          \u30e9\u30f3\u30c0\u30e0\u306a\u6570\u304c\u3088\u308a\u30e9\u30f3\u30c0\u30e0\u306b\u306a\u308b\u3088\u3046\u3001Java.util.Random\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u30b7\u30fc\u30c9\u5024(Random\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u5f15\u6570)\u3092\u6e21\u305b\u308b\u3068\u8a00\u3046\u3053\u3068\u3092\u899a\u3048\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002\u4f8b\u3048\u3070Random rand = new Random(System.currentTimeMillis())\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          Java\u3067\u306f\u3001java.util.Random\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u4e71\u6570\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u305d\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002 0 \u304b\u3089 n \u307e\u3067\u306e\u7bc4\u56f2\u306e\u6574\u6570\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u751f\u6210\u3059\u308b import java.util.Random; […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-111544","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava \u3067\u4e71\u6570\u3092\u751f\u6210\u3059\u308b\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\u308b\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\u308b\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Java\u3067\u306f\u3001java.util.Random\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u4e71\u6570\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u305d\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002 0 \u304b\u3089 n \u307e\u3067\u306e\u7bc4\u56f2\u306e\u6574\u6570\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u751f\u6210\u3059\u308b import java.util.Random; 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