{"id":17276,"date":"2024-03-16T06:22:00","date_gmt":"2024-03-15T21:22:00","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e6%96%87%e5%ad%97%e5%88%97%e3%81%ae%e7%bd%ae%e3%81%8d%e6%8f%9b%e3%81%88%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e7%a8%ae%e9%a1%9e%e3%81%82%e3%82%8a%e3%81%be\/"},"modified":"2025-08-06T11:06:16","modified_gmt":"2025-08-06T02:06:16","slug":"java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e6%96%87%e5%ad%97%e5%88%97%e3%81%ae%e7%bd%ae%e3%81%8d%e6%8f%9b%e3%81%88%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e7%a8%ae%e9%a1%9e%e3%81%82%e3%82%8a%e3%81%be","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e6%96%87%e5%ad%97%e5%88%97%e3%81%ae%e7%bd%ae%e3%81%8d%e6%8f%9b%e3%81%88%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e7%a8%ae%e9%a1%9e%e3%81%82%e3%82%8a%e3%81%be\/","title":{"rendered":"Java\u306b\u304a\u3051\u308b\u6587\u5b57\u5217\u306e\u7f6e\u304d\u63db\u3048\u65b9\u6cd5\u306f\u4f55\u7a2e\u985e\u3042\u308a\u307e\u3059\u304b\uff1f"},"content":{"rendered":"

Java\u306b\u306f\u3001\u6587\u5b57\u5217\u306e\u7f6e\u63db\u65b9\u6cd5\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n

    \n
  1. \u300cString\u30af\u30e9\u30b9\u306ereplace()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u30012\u3064\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u6700\u521d\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306f\u7f6e\u63db\u3057\u305f\u3044\u6587\u5b57\u3084\u6587\u5b57\u5217\u3067\u3042\u308a\u30012\u756a\u76ee\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306f\u7f6e\u304d\u63db\u3048\u308b\u6587\u5b57\u3084\u6587\u5b57\u5217\u3067\u3059\u3002\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u3059\u3079\u3066\u306e\u4e00\u81f4\u3059\u308b\u6587\u5b57\u3084\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3057\u307e\u3059\u3002\u300d<\/li>\n<\/ol>\n
    String str = \"Hello World\";\r\nString replacedStr = str.replace(\"World\", \"Java\");\r\nSystem.out.println(replacedStr);  \/\/ \u8f93\u51fa\uff1aHello Java\r\n<\/code><\/pre>\n
      \n
    1. String\u30af\u30e9\u30b9\u306ereplaceAll()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001replace()\u30e1\u30bd\u30c3\u30c9\u3068\u540c\u69d8\u306b\u3001\u6700\u521d\u306e\u5f15\u6570\u306b\u6b63\u898f\u8868\u73fe\u3092\u53d7\u3051\u53d6\u308b\u305f\u3081\u3001\u8907\u6570\u306e\u30de\u30c3\u30c1\u3059\u308b\u6587\u5b57\u3084\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\uff1a<\/li>\n<\/ol>\n
      String str = \"Hello World\";\r\nString replacedStr = str.replaceAll(\"o\", \"a\");\r\nSystem.out.println(replacedStr);  \/\/ \u8f93\u51fa\uff1aHella Warld\r\n<\/code><\/pre>\n
        \n
      1. StringBuilder\u307e\u305f\u306fStringBuffer\u30af\u30e9\u30b9\u306ereplace()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\uff1aStringBuilder\u304a\u3088\u3073StringBuffer\u30af\u30e9\u30b9\u306b\u306freplace()\u30e1\u30bd\u30c3\u30c9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u304a\u308a\u3001\u7279\u5b9a\u306e\u4f4d\u7f6e\u306e\u6587\u5b57\u307e\u305f\u306f\u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f3\u3064\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u6700\u521d\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u958b\u59cb\u4f4d\u7f6e\uff08\u542b\u3080\uff09\u30012\u756a\u76ee\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u7d42\u4e86\u4f4d\u7f6e\uff08\u542b\u307e\u306a\u3044\uff09\u30013\u756a\u76ee\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u7f6e\u63db\u3059\u308b\u6587\u5b57\u307e\u305f\u306f\u6587\u5b57\u5217\u3067\u3059\u3002
        \n\u4f8b\uff1a<\/li>\n<\/ol>\n
        StringBuilder sb = new StringBuilder(\"Hello World\");\r\nsb.replace(6, 11, \"Java\");\r\nSystem.out.println(sb.toString());  \/\/ \u8f93\u51fa\uff1aHello Java\r\n<\/code><\/pre>\n
        \u3053\u308c\u3089\u306e\u65b9\u6cd5\u306f\u3059\u3079\u3066\u3001\u6587\u5b57\u5217\u306e\u7f6e\u63db\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u5177\u4f53\u7684\u306b\u306f\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u4f7f\u7528\u65b9\u6cd5\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        Java\u306b\u306f\u3001\u6587\u5b57\u5217\u306e\u7f6e\u63db\u65b9\u6cd5\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\uff1a \u300cString\u30af\u30e9\u30b9\u306ereplace()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u30012\u3064\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u6700\u521d\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306f\u7f6e\u63db\u3057\u305f\u3044\u6587\u5b57\u3084\u6587\u5b57\u5217\u3067\u3042\u308a\u30012\u756a\u76ee\u306e\u30d1\u30e9 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-17276","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nJava\u306b\u304a\u3051\u308b\u6587\u5b57\u5217\u306e\u7f6e\u304d\u63db\u3048\u65b9\u6cd5\u306f\u4f55\u7a2e\u985e\u3042\u308a\u307e\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Java\u306b\u304a\u3051\u308b\u6587\u5b57\u5217\u306e\u7f6e\u304d\u63db\u3048\u65b9\u6cd5\u306f\u4f55\u7a2e\u985e\u3042\u308a\u307e\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\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\u306b\u304a\u3051\u308b\u6587\u5b57\u5217\u306e\u7f6e\u304d\u63db\u3048\u65b9\u6cd5\u306f\u4f55\u7a2e\u985e\u3042\u308a\u307e\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u306b\u304a\u3051\u308b\u6587\u5b57\u5217\u306e\u7f6e\u304d\u63db\u3048\u65b9\u6cd5\u306f\u4f55\u7a2e\u985e\u3042\u308a\u307e\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"Java\u306b\u304a\u3051\u308b\u6587\u5b57\u5217\u306e\u7f6e\u304d\u63db\u3048\u65b9\u6cd5\u306f\u4f55\u7a2e\u985e\u3042\u308a\u307e\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u306b\u304a\u3051\u308b\u6587\u5b57\u5217\u306e\u7f6e\u304d\u63db\u3048\u65b9\u6cd5\u306f\u4f55\u7a2e\u985e\u3042\u308a\u307e\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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