{"id":110952,"date":"2024-03-22T17:50:00","date_gmt":"2024-03-22T08:50:00","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af\/"},"modified":"2024-04-04T09:37:45","modified_gmt":"2024-04-04T00:37:45","slug":"%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af\/","title":{"rendered":"\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f"},"content":{"rendered":"

Java\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \n
  1. Integer.parseInt()<\/li>\n<\/ol>\n
    String<\/span> str<\/span> =<\/span> \"123\"<\/span>;\r\nint<\/span> num<\/span> =<\/span> Integer.parseInt(str);\r\n<\/code><\/pre>\n
      \n
    1. Double.parseDouble()<\/li>\n<\/ol>\n
      String<\/span> str<\/span> =<\/span> \"3.14\"<\/span>;\r\ndouble<\/span> num<\/span> =<\/span> Double.parseDouble(str);\r\n<\/code><\/pre>\n
        \n
      1. Float.parseFloat()<\/li>\n<\/ol>\n
        String<\/span> str<\/span> =<\/span> \"3.14\"<\/span>;\r\nfloat<\/span> num<\/span> =<\/span> Float.parseFloat(str);\r\n<\/code><\/pre>\n
          \n
        1. Long.parseLong()<\/li>\n<\/ol>\n
          String<\/span> str<\/span> =<\/span> \"1234567890\"<\/span>;\r\nlong<\/span> num<\/span> =<\/span> Long.parseLong(str);\r\n<\/code><\/pre>\n
          \u306a\u304a\u3001\u6587\u5b57\u5217\u304c\u6709\u52b9\u306a\u6570\u5024\u306b\u5909\u63db\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u4e0a\u8a18\u306e\u30e1\u30bd\u30c3\u30c9\u306fNumberFormatException\u4f8b\u5916\u3092\u30b9\u30ed\u30fc\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5909\u63db\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u6587\u5b57\u5217\u304c\u6570\u5024\u8868\u73fe\u3068\u3057\u3066\u9069\u5207\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          Java\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002 Integer.parseInt() String str = “123”; int num = Integer.parseInt(str); Double.par […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-110952","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f - 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\/\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f\" \/>\n<meta property=\"og:description\" content=\"Java\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002 Integer.parseInt() String str = "123"; int num = Integer.parseInt(str); Double.par […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-22T08:50:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-04T00:37:45+00:00\" \/>\n<meta name=\"author\" content=\"\u590f\u6a39, \u98a8\" \/>\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=\"\u590f\u6a39, \u98a8\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af\/\",\"name\":\"\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\"},\"datePublished\":\"2024-03-22T08:50:00+00:00\",\"dateModified\":\"2024-04-04T00:37:45+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/4e591db2661c4cc425470b461259391d\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/ja\/blog\/%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/ja\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f\"}]},{\"@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\/4e591db2661c4cc425470b461259391d\",\"name\":\"\u590f\u6a39, \u98a8\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/65e0ff40534461b1fa000382dc194e1716f793ab0bcb218ac3c40895551a08c5?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/65e0ff40534461b1fa000382dc194e1716f793ab0bcb218ac3c40895551a08c5?s=96&d=mm&r=g\",\"caption\":\"\u590f\u6a39, \u98a8\"},\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/author\/natsukikaze\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f - 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\/\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f\/","og_locale":"ja_JP","og_type":"article","og_title":"\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u306b\u306f","og_description":"Java\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002 Integer.parseInt() String str = \"123\"; 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