{"id":30008,"date":"2024-03-18T23:09:18","date_gmt":"2024-03-18T14:09:18","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/"},"modified":"2024-03-22T22:20:54","modified_gmt":"2024-03-22T13:20:54","slug":"java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/","title":{"rendered":"Java\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f"},"content":{"rendered":"

Java\u3067\u306f\u3001format\u30e1\u30bd\u30c3\u30c9\u306f\u6587\u5b57\u5217\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u305f\u3081\u306e\u65b9\u6cd5\u3067\u3042\u308a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \n
  1. %s\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ol>\n
    String<\/span> name<\/span> =<\/span> \"John\"<\/span>;\r\nint<\/span> age<\/span> =<\/span> 30<\/span>;\r\nString<\/span> message<\/span> =<\/span> String.format(\"My name is %s and I'm %d years old.\"<\/span>, name, age);\r\nSystem.out.println(message);\r\n<\/code><\/pre>\n
    \u79c1\u306e\u540d\u524d\u306f\u30b8\u30e7\u30f3\u3067\u300130\u6b73\u3067\u3059\u3002<\/p>\n
      \n
    1. \u6570\u5b57\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\uff1a %d\u3001%f\u3001%e\u3001%x<\/li>\n<\/ol>\n
      int<\/span> number<\/span> =<\/span> 10<\/span>;\r\nString<\/span> message<\/span> =<\/span> String.format(\"The number is %d.\"<\/span>, number);\r\nSystem.out.println(message);\r\n\r\nfloat<\/span> pi<\/span> =<\/span> 3.14159f<\/span>;\r\nString<\/span> message<\/span> =<\/span> String.format(\"The value of pi is %.2f.\"<\/span>, pi);\r\nSystem.out.println(message);\r\n\r\ndouble<\/span> exponent<\/span> =<\/span> 1.23456789e+5<\/span>;\r\nString<\/span> message<\/span> =<\/span> String.format(\"The exponent value is %e.\"<\/span>, exponent);\r\nSystem.out.println(message);\r\n\r\nint<\/span> hexNumber<\/span> =<\/span> 255<\/span>;\r\nString<\/span> message<\/span> =<\/span> String.format(\"The hexadecimal number is %x.\"<\/span>, hexNumber);\r\nSystem.out.println(message);\r\n<\/code><\/pre>\n
      \u6570\u5b57\u306f10\u3067\u3059\u3002
      \n\u03c0\u306e\u5024\u306f3.14\u3067\u3059\u3002
      \n\u6307\u6570\u306e\u5024\u306f1.234568e+05\u3067\u3059\u3002
      \n16\u9032\u6570\u306e\u6570\u5b57\u306fff\u3067\u3059\u3002<\/p>\n
        \n
      1. \u300c\u65e5\u4ed8\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u7528\uff1a%t\u300d<\/li>\n<\/ol>\n
        Date<\/span> now<\/span> =<\/span> new<\/span> Date<\/span>();\r\nString<\/span> message<\/span> =<\/span> String.format(\"Today is %tF.\"<\/span>, now);\r\nSystem.out.println(message);\r\n<\/code><\/pre>\n
        \u4eca\u65e5\u306f2022\u5e7401\u670801\u65e5\u3067\u3059\u3002<\/p>\n
        format\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306f\u4ee5\u4e0a\u3067\u3059\u3002\u5177\u4f53\u7684\u306a\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u7570\u306a\u308b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u6587\u5b57\u5217\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        Java\u3067\u306f\u3001format\u30e1\u30bd\u30c3\u30c9\u306f\u6587\u5b57\u5217\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u305f\u3081\u306e\u65b9\u6cd5\u3067\u3042\u308a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 %s\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002 String name = “John”; int age = 30; S […]<\/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-30008","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f - 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\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f\" \/>\n<meta property=\"og:description\" content=\"Java\u3067\u306f\u3001format\u30e1\u30bd\u30c3\u30c9\u306f\u6587\u5b57\u5217\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u305f\u3081\u306e\u65b9\u6cd5\u3067\u3042\u308a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 %s\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002 String name = "John"; int age = 30; S […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-18T14:09:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T13:20:54+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\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/\",\"name\":\"Java\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\"},\"datePublished\":\"2024-03-18T14:09:18+00:00\",\"dateModified\":\"2024-03-22T13:20:54+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/601389077b7f4e4ad6115428e3b73bff\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/ja\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Java\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f\"}]},{\"@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\/java%e3%81%aeformat%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Java\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f - 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\/java\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f\/","og_locale":"ja_JP","og_type":"article","og_title":"Java\u306eformat\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306f\uff1f","og_description":"Java\u3067\u306f\u3001format\u30e1\u30bd\u30c3\u30c9\u306f\u6587\u5b57\u5217\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u305f\u3081\u306e\u65b9\u6cd5\u3067\u3042\u308a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 %s\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002 String name = \"John\"; 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