{"id":391,"date":"2023-06-01T02:31:05","date_gmt":"2023-02-06T18:22:00","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/java-%e3%82%b9%e3%83%97%e3%83%aa%e3%83%83%e3%82%bf%e3%83%bc\/"},"modified":"2025-07-31T23:13:26","modified_gmt":"2025-07-31T14:13:26","slug":"java-%e3%82%b9%e3%83%97%e3%83%aa%e3%83%83%e3%82%bf%e3%83%bc","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java-%e3%82%b9%e3%83%97%e3%83%aa%e3%83%83%e3%82%bf%e3%83%bc\/","title":{"rendered":"Java \u30b9\u30d7\u30ea\u30c3\u30bf\u30fc"},"content":{"rendered":"

Java\u306eSpliterator\u306f\u30014\u3064\u306e\u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u3046\u3061\u306e1\u3064\u3067\u3059\u3002Enumeration\u3001Iterator\u3001ListIterator\u3001\u305d\u3057\u3066Spliterator\u3067\u3059\u3002<\/p>\n

Java\u306eSpliterator\u3067\u3059\u3002<\/h2>\n

\u30a4\u30c6\u30ec\u30fc\u30bf\u3084\u30ea\u30b9\u30c8\u30a4\u30c6\u30ec\u30fc\u30bf\u3068\u540c\u69d8\u306b\u3001\u30b9\u30d7\u30ea\u30c3\u30c8\u30ec\u30fc\u30bf\u306fJava\u306e\u30a4\u30c6\u30ec\u30fc\u30bf\u3067\u3042\u308a\u3001\u30ea\u30b9\u30c8\u5b9f\u88c5\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u8981\u7d20\u30921\u3064\u305a\u3064\u53cd\u5fa9\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002Java\u306e\u30b9\u30d7\u30ea\u30c3\u30c8\u30ec\u30fc\u30bf\u306b\u95a2\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n

    \n
  1. \n
      Java Collection API\u306b\u304a\u3051\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3042\u308bJava\u306eSpliterator\u3067\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

       <\/p>\n

        \n
      1. \n
          Spliterator\u306fJava 8\u306e\u30ea\u30ea\u30fc\u30b9\u3067java.util\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002<\/ol>\n<\/li>\n<\/ol>\n

           <\/p>\n

            \n
          1. \n
              \u305d\u308c\u306f\u4e26\u5217\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

               <\/p>\n

                \n
              1. \n
                  Collection API\u304a\u3088\u3073Stream API\u306e\u30af\u30e9\u30b9\u306e\u4e21\u65b9\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                   <\/p>\n

                    \n
                  1. \n
                      \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3084API\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u3064\u3044\u3066\u306e\u7279\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                       <\/p>\n

                        \n
                      1. \n
                          Map\u306e\u5b9f\u88c5\u30af\u30e9\u30b9\u306b\u306f\u3053\u306e\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/ol>\n<\/li>\n<\/ol>\n

                           <\/p>\n

                            \n
                          1. \n
                              \u8907\u6570\u306e\u30b9\u30ec\u30c3\u30c9\u3067\u8981\u7d20\u3092\u500b\u5225\u306b\u53cd\u5fa9\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u3001tryAdvance()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                               <\/p>\n

                                \n
                              1. \n
                                  \u8981\u7d20\u3092\u30b7\u30fc\u30b1\u30f3\u30b7\u30e3\u30eb\u306b\u5358\u4e00\u306e\u30b9\u30ec\u30c3\u30c9\u3067\u53cd\u5fa9\u3059\u308b\u305f\u3081\u306b\u3001forEachRemaining()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                   <\/p>\n

                                    \n
                                  1. \n
                                      \u81ea\u8eab\u3092\u30b5\u30d6Spliterator\u306b\u5206\u5272\u3059\u308b\u305f\u3081\u306b\u3001trySplit()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                       <\/p>\n

                                        Spliterator\u306f\u30c7\u30fc\u30bf\u306e\u9023\u7d9a\u304a\u3088\u3073\u4e26\u5217\u51e6\u7406\u306e\u4e21\u65b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/ol>\n

                                        Spliterator\u81ea\u4f53\u306f\u4e26\u5217\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u632f\u308b\u821e\u3044\u3092\u63d0\u4f9b\u3057\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u305d\u308c\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306e\u3044\u304f\u3064\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u958b\u767a\u8005\u306fSpliterator\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3057\u3001Fork\/Join\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u4f7f\u3063\u3066\u4e26\u5217\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b9f\u88c5\u3059\u308b\u3079\u304d\u3067\u3059\uff08\u3072\u3068\u3064\u306e\u9069\u5207\u306a\u65b9\u6cd5\uff09\u3002<\/p>\n

                                        \u30b9\u30d7\u30ea\u30c3\u30bf\u30ec\u30fc\u30bf\u306e\u4e3b\u306a\u6a5f\u80fd<\/h4>\n
                                          \n
                                        • Splitting the source data.<\/li>\n
                                        • Processing the source data.<\/li>\n<\/ul>\n
                                          \"Java<\/div>\n

                                          Java\u306eSpliterator\u30af\u30e9\u30b9\u306e\u56f3\u8868\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\uff1a\u300cJava\u306eSpliterator\u30af\u30e9\u30b9\u306e\u30af\u30e9\u30b9\u56f3\u300d<\/h3>\n
                                          \"Java<\/div>\n

                                          Java\u306eSpliterator\u30e1\u30bd\u30c3\u30c9\u3092\u8a00\u3044\u63db\u3048\u308b\u3068<\/h3>\n

                                          \u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001Java\u306eSpliterator\u30e1\u30bd\u30c3\u30c9\u3092\u4e00\u3064\u305a\u3064\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3057\u3001\u4fbf\u5229\u306a\u8aac\u660e\u3068\u5171\u306b\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

                                            \n
                                          1. \n
                                              \u7279\u6027\u3092\u8fd4\u3057\u307e\u3059\uff1a\u3053\u306eSpliterator\u3068\u305d\u306e\u8981\u7d20\u306e\u7279\u6027\u306e\u30bb\u30c3\u30c8\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                               <\/p>\n

                                                \n
                                              1. \n
                                                  \u8981\u7d20\u306e\u63a8\u5b9a\u6570\u3092\u8fd4\u3057\u307e\u3059\uff1aforEachRemaining\uff08\uff09\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\u3067\u30a8\u30f3\u30ab\u30a6\u30f3\u30c8\u3055\u308c\u308b\u8981\u7d20\u306e\u6570\u306e\u63a8\u5b9a\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002\u307e\u305f\u306f\u3001\u7121\u9650\u3001\u672a\u77e5\u3001\u307e\u305f\u306f\u8a08\u7b97\u304c\u9ad8\u4fa1\u306a\u5834\u5408\u306fLong.MAX_VALUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                                   <\/p>\n

                                                    \n
                                                  1. \n
                                                      \u4e0e\u3048\u3089\u308c\u305f\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5404\u6b8b\u308a\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u884c\u3044\u307e\u3059\u3002\u73fe\u5728\u306e\u30b9\u30ec\u30c3\u30c9\u3067\u9806\u6b21\u5b9f\u884c\u3055\u308c\u3001\u3059\u3079\u3066\u306e\u8981\u7d20\u304c\u51e6\u7406\u3055\u308c\u308b\u304b\u3001\u30a2\u30af\u30b7\u30e7\u30f3\u304c\u4f8b\u5916\u3092\u30b9\u30ed\u30fc\u3059\u308b\u307e\u3067\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                                       <\/p>\n

                                                        \n
                                                      1. \n
                                                          \u30c7\u30d5\u30a9\u30eb\u30c8\u306eComparator\u3092\u53d6\u5f97\u3057\u307e\u3059\uff1a\u3053\u306eSpliterator\u306e\u30bd\u30fc\u30b9\u304cComparator\u3067\u30bd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u306eComparator\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                                           <\/p>\n

                                                            \n
                                                          1. \n
                                                              ExactSizeIfKnown\u3092\u53d6\u5f97\u3057\u307e\u3059\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09\uff1a\u3053\u306eSpliterator\u304cSIZED\u306e\u5834\u5408\u306festimateSize\uff08\uff09\u3092\u8fd4\u3057\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f-1\u3092\u8fd4\u3059\u4fbf\u5229\u306a\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                                               <\/p>\n

                                                                \n
                                                              1. \n
                                                                  \u6307\u5b9a\u3055\u308c\u305f\u7279\u5fb4\u3092\u6307\u5b9a\u3055\u308c\u305f\u7279\u5fb4\u3068\u3057\u3066\u542b\u3080\u5834\u5408\u306ftrue\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                                                   <\/p>\n

                                                                    \n
                                                                  1. \n
                                                                      \u6307\u5b9a\u3055\u308c\u305f\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3057\u3001\u6b8b\u308a\u306e\u8981\u7d20\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306ftrue\u3092\u8fd4\u3057\u307e\u3059\u3002\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306ffalse\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n

                                                                       <\/p>\n

                                                                        Spliterator\u304c\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u306b\u5206\u5272\u3067\u304d\u308b\u5834\u5408\u3001\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u623b\u3063\u305f\u6642\u70b9\u3067\u306f\u3053\u306eSpliterator\u306b\u3088\u3063\u3066\u30ab\u30d0\u30fc\u3055\u308c\u306a\u3044\u8981\u7d20\u3092\u30ab\u30d0\u30fc\u3059\u308bSpliterator\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n

                                                                        Java\u306eSpliterator\u306e\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/h3>\n

                                                                        \u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001spliterator()\u3092\u4f7f\u7528\u3057\u3066Java Spliterator\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001\u7c21\u5358\u306a\u4f8b\u3092\u958b\u767a\u3057\u307e\u3059\u3002<\/p>\n

                                                                        import java.util.Spliterator;\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class SpliteratorSequentialIteration\r\n{\r\n  public static void main(String[] args) \r\n  {\r\n\tList<String> names = new ArrayList<>();\r\n\tnames.add(\"Rams\");\r\n\tnames.add(\"Posa\");\r\n\tnames.add(\"Chinni\");\r\n\t\t\r\n\t\/\/ Getting Spliterator\r\n\tSpliterator<String> namesSpliterator = names.spliterator();\r\n\t\t\r\n\t\/\/ Traversing elements\r\n\tnamesSpliterator.forEachRemaining(System.out::println);\t\t\t\r\n   }\r\n}\r\n<\/code><\/pre>\n
                                                                        \u51fa\u529b\uff1a<\/p>\n
                                                                        Rams\r\nPosa\r\nChinni\r\n<\/code><\/pre>\n
                                                                        \u4e0a\u8a18\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3068\u51fa\u529b\u3092\u89b3\u5bdf\u3059\u308b\u3068\u3001Spliterator.forEachRemaining() \u30e1\u30bd\u30c3\u30c9\u306f ArrayList.foreach() \u3068\u540c\u3058\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u3053\u3068\u304c\u5bb9\u6613\u306b\u7406\u89e3\u3067\u304d\u307e\u3059\u3002\u306f\u3044\u3001\u4e21\u65b9\u306f\u4f3c\u305f\u3088\u3046\u306a\u65b9\u6cd5\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n
                                                                        \u30b9\u30d7\u30ea\u30c3\u30bf\u30ec\u30fc\u30bf\u306e\u5229\u70b9<\/h3>\n
                                                                          \n
                                                                        1. \n
                                                                            \u4ed6\u306e\u30a4\u30c6\u30ec\u30fc\u30bf\u30fc\u3068\u6bd4\u3079\u3066\u3001\u3088\u308a\u512a\u308c\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n
                                                                             <\/p>\n
                                                                              \n
                                                                            1. \n
                                                                                \u30a4\u30c6\u30ec\u30fc\u30bf\u30fc\u3084\u30ea\u30b9\u30c8\u30a4\u30c6\u30ec\u30fc\u30bf\u30fc\u3068\u306f\u7570\u306a\u308a\u3001\u4e26\u5217\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n
                                                                                 <\/p>\n
                                                                                  \u30a4\u30c6\u30ec\u30fc\u30bf\u30fc\u3084\u30ea\u30b9\u30c8\u30a4\u30c6\u30ec\u30fc\u30bf\u30fc\u3068\u306f\u7570\u306a\u308a\u3001\u30c7\u30fc\u30bf\u306e\u9806\u6b21\u51e6\u7406\u304a\u3088\u3073\u4e26\u5217\u51e6\u7406\u306e\u4e21\u65b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/ol>\n
                                                                                  \u30a4\u30c6\u30ec\u30fc\u30bf\u30fc\u5bfe\u30b9\u30d7\u30ea\u30c3\u30bf\u30fc<\/h3>\n
                                                                                  \n
                                                                                  \n\n\n\n\n\n\n\n\n
                                                                                  Iterator<\/th>\nSpliterator<\/th>\n<\/tr>\n<\/thead>\n
                                                                                  Introduced in Java 1.2.<\/td>\nIntroduced in Java 1.8.<\/td>\n<\/tr>\n
                                                                                  It is an Iterator for whole Collection API.<\/td>\nIt is an Iterator for both Collection and Stream API, except Map implemented classes.<\/td>\n<\/tr>\n
                                                                                  It is an Universal Iterator.<\/td>\nIt is NOT an Universal Iterator.<\/td>\n<\/tr>\n
                                                                                  It does NOT support Parallel Programming.<\/td>\nIt supports Parallel Programming.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
                                                                                  \u305d\u308c\u304cJava\u306eSpliterator\u306b\u3064\u3044\u3066\u3059\u3079\u3066\u3067\u3059\u3002\u53c2\u8003\uff1aAPI\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                                                                                  Java\u306eSpliterator\u306f\u30014\u3064\u306e\u30a4\u30c6\u30ec\u30fc\u30bf\u306e\u3046\u3061\u306e1\u3064\u3067\u3059\u3002Enumeration\u3001Iterator\u3001ListIterator\u3001\u305d\u3057\u3066Spliterator\u3067\u3059\u3002 Java\u306eSpliterator\u3067\u3059\u3002 \u30a4\u30c6\u30ec […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-391","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nJava \u30b9\u30d7\u30ea\u30c3\u30bf\u30fc - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Java \u30b9\u30d7\u30ea\u30c3\u30bf\u30fc\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-\u30b9\u30d7\u30ea\u30c3\u30bf\u30fc\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java \u30b9\u30d7\u30ea\u30c3\u30bf\u30fc\" \/>\n<meta property=\"og:description\" content=\"Java \u30b9\u30d7\u30ea\u30c3\u30bf\u30fc\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-\u30b9\u30d7\u30ea\u30c3\u30bf\u30fc\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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