{"id":2585,"date":"2024-03-13T16:45:07","date_gmt":"2024-03-13T07:45:07","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/"},"modified":"2024-03-20T05:33:24","modified_gmt":"2024-03-19T20:33:24","slug":"2585-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/","title":{"rendered":""},"content":{"rendered":"

DecimalFormat\u306f\u6570\u5b57\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u305f\u3081\u306eJava\u306e\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u6307\u5b9a\u3055\u308c\u305f\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3063\u3066\u6570\u5b57\u3092\u7279\u5b9a\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u6574\u5f62\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306fDecimalFormat\u3092\u4f7f\u7528\u3059\u308b\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u3067\u3059\uff1a<\/p>\n

    \n
  1. DecimalFormat\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b:<\/li>\n<\/ol>\n
    DecimalFormat<\/span> df<\/span> =<\/span> new<\/span> DecimalFormat<\/span>(\"#,###.00\"<\/span>); \/\/ \u521b\u5efa\u4e00\u4e2a\u5e26\u6709\u5343\u4f4d\u5206\u9694\u7b26\u548c\u5c0f\u6570\u70b9\u7684\u683c\u5f0f<\/span>\r\n<\/code><\/pre>\n
      \n
    1. \u6570\u5b57\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u5316:<\/li>\n<\/ol>\n
      double<\/span> number<\/span> =<\/span> 12345.6789<\/span>;\r\nString<\/span> formattedNumber<\/span> =<\/span> df.format(number);\r\nSystem.out.println(formattedNumber); \/\/ \u8f93\u51fa\uff1a12,345.68<\/span>\r\n<\/code><\/pre>\n
        \n
      1. \u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b:<\/li>\n<\/ol>\n
        String<\/span> strNumber<\/span> =<\/span> \"12,345.67\"<\/span>;\r\ndouble<\/span> parsedNumber<\/span> =<\/span> df.parse(strNumber).doubleValue();\r\nSystem.out.println(parsedNumber); \/\/ \u8f93\u51fa\uff1a12345.67<\/span>\r\n<\/code><\/pre>\n
          \n
        1. \u30ab\u30b9\u30bf\u30e0\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/li>\n<\/ol>\n
          df.applyPattern(\"0.###\"<\/span>); \/\/ \u8bbe\u7f6e\u4e00\u4e2a\u4e0d\u5e26\u5343\u4f4d\u5206\u9694\u7b26\u7684\u5c0f\u6570\u683c\u5f0f<\/span>\r\n<\/code><\/pre>\n
            \n
          1. \u901a\u8ca8\u5f62\u5f0f\u306e\u8a2d\u5b9a\uff1a<\/li>\n<\/ol>\n
            DecimalFormat<\/span> currencyFormat<\/span> =<\/span> new<\/span> DecimalFormat<\/span>(\"\u00a4#,###.00\"<\/span>); \/\/ \u521b\u5efa\u4e00\u4e2a\u5e26\u6709\u8d27\u5e01\u7b26\u53f7\u7684\u683c\u5f0f<\/span>\r\n<\/code><\/pre>\n
              \n
            1. \u90e8\u5206\u5316\u3092\u8a2d\u5b9a\u3059\u308b\uff1a<\/li>\n<\/ol>\n
              df.setDecimalFormatSymbols(new<\/span> DecimalFormatSymbols<\/span>(Locale.US)); \/\/ \u8bbe\u7f6e\u4f7f\u7528\u7f8e\u56fd\u7684\u683c\u5f0f\u5316\u89c4\u5219<\/span>\r\n\r\n<\/code><\/pre>\n
                \n
              1. \u6700\u5927\u5024\u3068\u6700\u5c0f\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n
                df.setMaximumFractionDigits(3<\/span>); \/\/ \u8bbe\u7f6e\u5c0f\u6570\u70b9\u540e\u6700\u591a\u4fdd\u75593\u4f4d\u5c0f\u6570<\/span>\r\ndf.setMinimumIntegerDigits(5<\/span>); \/\/ \u8bbe\u7f6e\u81f3\u5c11\u4fdd\u75595\u4f4d\u6574\u6570<\/span>\r\n<\/code><\/pre>\n
                \u3053\u308c\u3089\u306fDecimalFormat\u306e\u4e00\u822c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6570\u5b57\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304a\u3088\u3073\u89e3\u6790\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                DecimalFormat\u306f\u6570\u5b57\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u305f\u3081\u306eJava\u306e\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u6307\u5b9a\u3055\u308c\u305f\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3063\u3066\u6570\u5b57\u3092\u7279\u5b9a\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u6574\u5f62\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306fDecimalFormat\u3092\u4f7f\u7528\u3059\u308b\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u3067\u3059\uff1a D […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2585","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- 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\/2585-2\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"DecimalFormat\u306f\u6570\u5b57\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u305f\u3081\u306eJava\u306e\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u6307\u5b9a\u3055\u308c\u305f\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3063\u3066\u6570\u5b57\u3092\u7279\u5b9a\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u6574\u5f62\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306fDecimalFormat\u3092\u4f7f\u7528\u3059\u308b\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u3067\u3059\uff1a D […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-13T07:45:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-19T20:33:24+00:00\" \/>\n<meta name=\"author\" content=\"\u7dbe\u4e43, \u4e00\u5e0c\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u7dbe\u4e43, \u4e00\u5e0c\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/\",\"name\":\"- Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\"},\"datePublished\":\"2024-03-13T07:45:07+00:00\",\"dateModified\":\"2024-03-19T20:33:24+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/601389077b7f4e4ad6115428e3b73bff\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"ja\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/601389077b7f4e4ad6115428e3b73bff\",\"name\":\"\u7dbe\u4e43, \u4e00\u5e0c\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/2228fe98b71141214fb24fb1b5ae44f99bdfa0602bbd89b351f2acd49ece862d?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/2228fe98b71141214fb24fb1b5ae44f99bdfa0602bbd89b351f2acd49ece862d?s=96&d=mm&r=g\",\"caption\":\"\u7dbe\u4e43, \u4e00\u5e0c\"},\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/author\/ayanokazuki\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"- Blog - Silicon Cloud","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/","og_locale":"ja_JP","og_type":"article","og_description":"DecimalFormat\u306f\u6570\u5b57\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u305f\u3081\u306eJava\u306e\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u6307\u5b9a\u3055\u308c\u305f\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3063\u3066\u6570\u5b57\u3092\u7279\u5b9a\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u6574\u5f62\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306fDecimalFormat\u3092\u4f7f\u7528\u3059\u308b\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u3067\u3059\uff1a D […]","og_url":"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2024-03-13T07:45:07+00:00","article_modified_time":"2024-03-19T20:33:24+00:00","author":"\u7dbe\u4e43, \u4e00\u5e0c","twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"\u7dbe\u4e43, \u4e00\u5e0c"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/","url":"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/","name":"- Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website"},"datePublished":"2024-03-13T07:45:07+00:00","dateModified":"2024-03-19T20:33:24+00:00","author":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/601389077b7f4e4ad6115428e3b73bff"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/"]}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website","url":"https:\/\/www.silicloud.com\/ja\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"ja"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/601389077b7f4e4ad6115428e3b73bff","name":"\u7dbe\u4e43, \u4e00\u5e0c","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/2228fe98b71141214fb24fb1b5ae44f99bdfa0602bbd89b351f2acd49ece862d?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/2228fe98b71141214fb24fb1b5ae44f99bdfa0602bbd89b351f2acd49ece862d?s=96&d=mm&r=g","caption":"\u7dbe\u4e43, \u4e00\u5e0c"},"url":"https:\/\/www.silicloud.com\/ja\/blog\/author\/ayanokazuki\/"},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/2585-2\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/2585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/comments?post=2585"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/2585\/revisions"}],"predecessor-version":[{"id":67790,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/2585\/revisions\/67790"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/media?parent=2585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/categories?post=2585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/tags?post=2585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}