Java\u306e\u6b63\u898f\u8868\u73fe\u3078\u3088\u3046\u3053\u305d\u3002Java\u3067\u306f\u3053\u308c\u306f\u6b63\u898f\u8868\u73fe\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u59cb\u3081\u305f\u6642\u3001Java\u306e\u6b63\u898f\u8868\u73fe\u306f\u79c1\u306b\u3068\u3063\u3066\u60aa\u5922\u3067\u3057\u305f\u3002\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306f\u3001Java\u306e\u6b63\u898f\u8868\u73fe\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u306e\u3092\u52a9\u3051\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u79c1\u3082\u3053\u3053\u306b\u623b\u3063\u3066Java\u306e\u6b63\u898f\u8868\u73fe\u306e\u5b66\u7fd2\u3092\u632f\u308a\u8fd4\u308a\u307e\u3059\u3002<\/p>\n
Java\u306e\u6b63\u898f\u8868\u73fe\u306f\u3001\u6587\u5b57\u5217\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u6b63\u898f\u8868\u73fe\u306f\u3001\u30c6\u30ad\u30b9\u30c8\u306e\u691c\u7d22\u3001\u7de8\u96c6\u3001\u64cd\u4f5c\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b63\u898f\u8868\u73fe\u306f\u3001\u8a00\u8a9e\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u304c\u3001Java\u306e\u6b63\u898f\u8868\u73fe\u306fPerl\u306b\u6700\u3082\u985e\u4f3c\u3057\u3066\u3044\u307e\u3059\u3002Java\u306e\u6b63\u898f\u8868\u73fe\u30af\u30e9\u30b9\u306f\u3001java.util.regex\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u5b58\u5728\u3057\u30013\u3064\u306e\u30af\u30e9\u30b9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u30de\u30c3\u30c1\u30e3\u30fc\uff1a\u30de\u30c3\u30c1\u30e3\u30fc\u306f\u3001\u5165\u529b\u6587\u5b57\u5217\u306e\u30d1\u30bf\u30fc\u30f3\u3068\u4f5c\u6210\u3055\u308c\u305f\u30d1\u30bf\u30fc\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30de\u30c3\u30c1\u30f3\u30b0\u3059\u308bJava\u306e\u6b63\u898f\u8868\u73fe\u30a8\u30f3\u30b8\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002 \u30de\u30c3\u30c1\u30e3\u30fc\u30af\u30e9\u30b9\u306b\u306f\u516c\u958b\u3055\u308c\u305f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u306a\u304f\u3001\u30d1\u30bf\u30fc\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30de\u30c3\u30c1\u30e3\u30fc\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5165\u529b\u6587\u5b57\u5217\u3092\u5f15\u6570\u306b\u3057\u3066\u30de\u30c3\u30c1\u30e3\u30fc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002 \u305d\u306e\u5f8c\u3001regex\u30d1\u30bf\u30fc\u30f3\u3068\u5165\u529bString\u304c\u4e00\u81f4\u3059\u308b\u304b\u3069\u3046\u304b\u306b\u57fa\u3065\u3044\u3066\u771f\u507d\u5024\u306e\u7d50\u679c\u3092\u8fd4\u3059”matches”\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
PatternSyntaxException\uff1a\u6b63\u898f\u8868\u73fe\u306e\u69cb\u6587\u304c\u6b63\u3057\u304f\u306a\u3044\u5834\u5408\u3001PatternSyntaxException\u304c\u30b9\u30ed\u30fc\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u300cJava\u306e\u6b63\u898f\u8868\u73fe\u306e\u4f8b\u984c\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u300d<\/p>\n
package com.scdev.util;\r\n\r\nimport java.util.regex.*;\r\n\r\npublic class PatternExample {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tPattern pattern = Pattern.compile(\".xx.\");\r\n\t\tMatcher matcher = pattern.matcher(\"MxxY\");\r\n\t\tSystem.out.println(\"Input String matches regex - \"+matcher.matches());\r\n\t\t\/\/ bad regular expression\r\n\t\tpattern = Pattern.compile(\"*xx*\");\r\n\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n\u3053\u306eJava\u306e\u6b63\u898f\u8868\u73fe\u306e\u4f8b\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n
Input String matches regex - true\r\nException in thread \"main\" java.util.regex.PatternSyntaxException: Dangling meta character '*' near index 0\r\n*xx*\r\n^\r\n\tat java.util.regex.Pattern.error(Pattern.java:1924)\r\n\tat java.util.regex.Pattern.sequence(Pattern.java:2090)\r\n\tat java.util.regex.Pattern.expr(Pattern.java:1964)\r\n\tat java.util.regex.Pattern.compile(Pattern.java:1665)\r\n\tat java.util.regex.Pattern.(Pattern.java:1337)\r\n\tat java.util.regex.Pattern.compile(Pattern.java:1022)\r\n\tat com.scdev.util.PatternExample.main(PatternExample.java:13)\r\n<\/code><\/pre>\nJava\u306e\u6b63\u898f\u8868\u73fe\u306fString\u3092\u4e2d\u5fc3\u306b\u56de\u3063\u3066\u304a\u308a\u3001Java 1.4\u3067\u306fString\u30af\u30e9\u30b9\u304c\u62e1\u5f35\u3055\u308c\u3001regex\u30d1\u30bf\u30fc\u30f3\u306e\u30de\u30c3\u30c1\u30f3\u30b0\u3092\u884c\u3046matches\u30e1\u30bd\u30c3\u30c9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5185\u90e8\u7684\u306b\u306fPattern\u30af\u30e9\u30b9\u3068Matcher\u30af\u30e9\u30b9\u304c\u4f7f\u308f\u308c\u3066\u51e6\u7406\u304c\u884c\u308f\u308c\u307e\u3059\u304c\u3001\u660e\u3089\u304b\u306b\u30b3\u30fc\u30c9\u884c\u6570\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Pattern\u30af\u30e9\u30b9\u306b\u306f\u3001regex\u3068\u5165\u529b\u306eString\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u305d\u308c\u3089\u3092\u30de\u30c3\u30c1\u30f3\u30b0\u3057\u305f\u5f8c\u306b\u30d6\u30fc\u30eb\u5024\u306e\u7d50\u679c\u3092\u8fd4\u3059matches\u30e1\u30bd\u30c3\u30c9\u3082\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306fJava\u3067\u6b63\u898f\u8868\u73fe\u3068\u5165\u529b\u306eString\u3092\u30de\u30c3\u30c1\u30f3\u30b0\u3059\u308b\u306e\u306b\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
String str = \"bbb\";\r\nSystem.out.println(\"Using String matches method: \"+str.matches(\".bb\"));\r\nSystem.out.println(\"Using Pattern matches method: \"+Pattern.matches(\".bb\", str));\r\n<\/code><\/pre>\n\u3082\u3057\u5165\u529b\u6587\u5b57\u5217\u3092\u30d1\u30bf\u30fc\u30f3\u3068\u4e00\u81f4\u3055\u305b\u308b\u3060\u3051\u3067\u3042\u308c\u3070\u3001\u5358\u7d14\u306a\u6587\u5b57\u5217\u306e\u4e00\u81f4\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u6642\u9593\u3068\u30b3\u30fc\u30c9\u306e\u884c\u6570\u3092\u7bc0\u7d04\u3067\u304d\u307e\u3059\u3002\u5165\u529b\u6587\u5b57\u5217\u3092\u64cd\u4f5c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3084\u30d1\u30bf\u30fc\u30f3\u3092\u518d\u5229\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u306e\u307f\u3001Pattern\u30af\u30e9\u30b9\u3068Matches\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3079\u304d\u3067\u3059\u3002\u6b63\u898f\u8868\u73fe\u306b\u3088\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u305f\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u5de6\u304b\u3089\u53f3\u306b\u6587\u5b57\u5217\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002\u4e00\u5ea6\u30bd\u30fc\u30b9\u306e\u6587\u5b57\u304c\u30de\u30c3\u30c1\u30f3\u30b0\u306b\u4f7f\u7528\u3055\u308c\u308b\u3068\u3001\u518d\u5229\u7528\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u4f8b\u3048\u3070\u3001\u6b63\u898f\u8868\u73fe”121″\u306f\u3001”_121____121″\u3068\u3057\u3066\u306e\u307f\u300c31212142121\u300d\u306b2\u56de\u4e00\u81f4\u3057\u307e\u3059\u3002<\/p>\n
Java\u306b\u304a\u3051\u308b\u6b63\u898f\u8868\u73fe – \u4e00\u822c\u7684\u306a\u30de\u30c3\u30c1\u30f3\u30b0\u30b7\u30f3\u30dc\u30eb<\/h3>\n\n\n\n\n\nRegular Expression<\/th>\n Description<\/th>\n Example<\/th>\n<\/tr>\n<\/thead>\n \n\n.<\/td>\n Matches any single character<\/td>\n (\u201c\u2026\u201d, \u201ca%\u201d) \u2013 true(\u201c\u2026\u201d, \u201c.a\u201d) \u2013 true (\u201c\u2026\u201d, \u201ca\u201d) \u2013 false<\/td>\n<\/tr>\n \n^aaa<\/td>\n Matches aaa regex at the beginning of the line<\/td>\n (\u201c^a.c.\u201d, \u201cabcd\u201d) \u2013 true (\u201c^a\u201d, \u201cac\u201d) \u2013 false<\/td>\n<\/tr>\n \naaa$<\/td>\n Matches regex aaa at the end of the line<\/td>\n (\u201c\u2026cd$\u201d, \u201cabcd\u201d) \u2013 true(\u201ca$\u201d, \u201ca\u201d) \u2013 true (\u201ca$\u201d, \u201caca\u201d) \u2013 false<\/td>\n<\/tr>\n \n[abc]<\/td>\n Can match any of the letter a, b or c. [] are known as character classes.<\/td>\n (\u201c^[abc]d.\u201d, \u201cad9\u201d) \u2013 true(\u201c[ab].d$\u201d, \u201cbad\u201d) \u2013 true (\u201c[ab]x\u201d, \u201ccx\u201d) \u2013 false<\/td>\n<\/tr>\n \n[abc][12]<\/td>\n Can match a, b or c followed by 1 or 2<\/td>\n (\u201c[ab][12].\u201d, \u201ca2#\u201d) \u2013 true(\u201c[ab]\u2026[12]\u201d, \u201cacd2\u201d) \u2013 true (\u201c[ab][12]\u201d, \u201cc2\u201d) \u2013 false<\/td>\n<\/tr>\n \n[^abc]<\/td>\n When ^ is the first character in [], it negates the pattern, matches anything except a, b or c<\/td>\n (\u201c[^ab][^12].\u201d, \u201cc3#\u201d) \u2013 true(\u201c[^ab]\u2026[^12]\u201d, \u201cxcd3\u201d) \u2013 true (\u201c[^ab][^12]\u201d, \u201cc2\u201d) \u2013 false<\/td>\n<\/tr>\n \n[a-e1-8]<\/td>\n Matches ranges between a to e or 1 to 8<\/td>\n (\u201c[a-e1-3].\u201d, \u201cd#\u201d) \u2013 true(\u201c[a-e1-3]\u201d, \u201c2\u201d) \u2013 true (\u201c[a-e1-3]\u201d, \u201cf2\u201d) \u2013 false<\/td>\n<\/tr>\n \nxx<\/td>\n yy<\/td>\n Matches regex xx or yy<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\nJava\u306e\u6b63\u898f\u8868\u73fe\u30e1\u30bf\u30ad\u30e3\u30e9\u30af\u30bf\u30fc<\/h3>\n
Java\u306e\u6b63\u898f\u8868\u73fe\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u30e1\u30bf\u6587\u5b57\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u4e00\u822c\u7684\u306a\u4e00\u81f4\u30d1\u30bf\u30fc\u30f3\u306e\u305f\u3081\u306e\u30b7\u30e7\u30fc\u30c8\u30b3\u30fc\u30c9\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n
\n\n\n\n\nRegular Expression<\/th>\n Description<\/th>\n<\/tr>\n<\/thead>\n \n\n\\d<\/td>\n Any digits, short of [0-9]<\/td>\n<\/tr>\n \n\\D<\/td>\n Any non-digit, short for [^0-9]<\/td>\n<\/tr>\n \n\\s<\/td>\n Any whitespace character, short for [\\t\\n\\x0B\\f\\r]<\/td>\n<\/tr>\n \n\\S<\/td>\n Any non-whitespace character, short for [^\\s]<\/td>\n<\/tr>\n \n\\w<\/td>\n Any word character, short for [a-zA-Z_0-9]<\/td>\n<\/tr>\n \n\\W<\/td>\n Any non-word character, short for [^\\w]<\/td>\n<\/tr>\n \n\\b<\/td>\n A word boundary<\/td>\n<\/tr>\n \n\\B<\/td>\n A non word boundary<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n\u6b63\u898f\u8868\u73fe\u3067\u30e1\u30bf\u6587\u5b57\u3092\u901a\u5e38\u306e\u6587\u5b57\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u306f2\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n
\n- \n
\u300c\u30e1\u30bf\u30ad\u30e3\u30e9\u30af\u30bf\u30fc\u306e\u524d\u306b\u30d0\u30c3\u30af\u30b9\u30e9\u30c3\u30b7\u30e5(\\)\u3092\u7f6e\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\u30e1\u30bf\u30ad\u30e3\u30e9\u30af\u30bf\u30fc\u3092\\Q\uff08\u5f15\u7528\u3092\u958b\u59cb\u3059\u308b\uff09\u3068\\E\uff08\u5f15\u7528\u3092\u7d42\u4e86\u3059\u308b\uff09\u306e\u9593\u306b\u4fdd\u6301\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u300d<\/ol>\nJava\u306b\u304a\u3051\u308b\u6b63\u898f\u8868\u73fe – \u91cf\u6307\u5b9a\u5b50<\/h3>\n
Java\u306e\u6b63\u898f\u8868\u73fe\u30af\u30a9\u30f3\u30bf\u30a4\u30d5\u30a1\u30a4\u30a2\u306f\u3001\u4e00\u81f4\u3059\u308b\u6587\u5b57\u306e\u51fa\u73fe\u56de\u6570\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
\n\n\n\n\nRegular Expression<\/th>\n Description<\/th>\n<\/tr>\n<\/thead>\n \n\nx?<\/td>\n x occurs once or not at all<\/td>\n<\/tr>\n \nX*<\/td>\n X occurs zero or more times<\/td>\n<\/tr>\n \nX+<\/td>\n X occurs one or more times<\/td>\n<\/tr>\n \nX{n}<\/td>\n X occurs exactly n times<\/td>\n<\/tr>\n \nX{n,}<\/td>\n X occurs n or more times<\/td>\n<\/tr>\n \nX{n,m}<\/td>\n X occurs at least n times but not more than m times<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\nJava\u306e\u6b63\u898f\u8868\u73fe\u306e\u91cf\u6307\u5b9a\u5b50\u306f\u3001\u6587\u5b57\u30af\u30e9\u30b9\u3084\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u3068\u3082\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001[abc]+\u306f\u3001a\u3001b\u3001\u307e\u305f\u306fc\u30921\u56de\u4ee5\u4e0a\u7e70\u308a\u8fd4\u3059\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002 (abc)+\u306f\u3001\u300cabc\u300d\u3068\u3044\u3046\u30b0\u30eb\u30fc\u30d7\u30921\u56de\u4ee5\u4e0a\u7e70\u308a\u8fd4\u3059\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u6b21\u306b\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
Java\u306b\u304a\u3051\u308b\u6b63\u898f\u8868\u73fe – \u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7<\/h3>\n
Java\u306e\u6b63\u898f\u8868\u73fe\u3067\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u306f\u8907\u6570\u306e\u6587\u5b57\u3092\u5358\u4e00\u306e\u5358\u4f4d\u3068\u3057\u3066\u6271\u3046\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002()\u3092\u4f7f\u7528\u3057\u3066\u30b0\u30eb\u30fc\u30d7\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u306b\u4e00\u81f4\u3059\u308b\u5165\u529b\u6587\u5b57\u5217\u306e\u90e8\u5206\u306f\u30e1\u30e2\u30ea\u306b\u4fdd\u5b58\u3055\u308c\u3001\u30d0\u30c3\u30af\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u4f7f\u7528\u3057\u3066\u518d\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002matcher.groupCount\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001Java\u306e\u6b63\u898f\u8868\u73fe\u30d1\u30bf\u30fc\u30f3\u3067\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u306e\u6570\u3092\u8abf\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001((a)(bc))\u306b\u306f3\u3064\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059- ((a)(bc))\u3001(a)\u3001(bc)\u3002\u30d0\u30c3\u30af\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u306f\u3001\u30d0\u30c3\u30af\u30b9\u30e9\u30c3\u30b7\u30e5\uff08\\\uff09\u3068\u30b0\u30eb\u30fc\u30d7\u306e\u756a\u53f7\u3092\u6307\u5b9a\u3057\u3066\u3001\u6b63\u898f\u8868\u73fe\u5185\u3067\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u3068\u30d0\u30c3\u30af\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u306f\u6df7\u4e71\u3059\u308b\u5834\u5408\u304c\u3042\u308b\u306e\u3067\u3001\u4f8b\u3092\u4f7f\u3063\u3066\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
System.out.println(Pattern.matches(\"(\\\\w\\\\d)\\\\1\", \"a2a2\")); \/\/true\r\nSystem.out.println(Pattern.matches(\"(\\\\w\\\\d)\\\\1\", \"a2b2\")); \/\/false\r\nSystem.out.println(Pattern.matches(\"(AB)(B\\\\d)\\\\2\\\\1\", \"ABB2B2AB\")); \/\/true\r\nSystem.out.println(Pattern.matches(\"(AB)(B\\\\d)\\\\2\\\\1\", \"ABB2B3AB\")); \/\/false\r\n<\/code><\/pre>\n\u6700\u521d\u306e\u4f8b\u3067\u306f\u3001\u30e9\u30f3\u30bf\u30a4\u30e0\u3067\u6700\u521d\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u306f(\\w\\d)\u3067\u3042\u308a\u3001”a2a2″\u3068\u3044\u3046\u30a4\u30f3\u30d7\u30c3\u30c8\u6587\u5b57\u5217\u3068\u30de\u30c3\u30c1\u3059\u308b\u3068\u3001”a2″\u3068\u3044\u3046\u5024\u304c\u30e1\u30e2\u30ea\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\\1\u306f”a2″\u3092\u6307\u3057\u3066\u304a\u308a\u3001\u3057\u305f\u304c\u3063\u3066\u771f\u3092\u8fd4\u3057\u307e\u3059\u3002\u540c\u3058\u7406\u7531\u3067\u30012\u756a\u76ee\u306e\u6587\u306f\u507d\u3092\u51fa\u529b\u3057\u307e\u3059\u30023\u756a\u76ee\u30684\u756a\u76ee\u306e\u6587\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u306e\u30b7\u30ca\u30ea\u30aa\u3092\u81ea\u5206\u3067\u7406\u89e3\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002:) \u3067\u306f\u3001Pattern\u30af\u30e9\u30b9\u3068Matcher\u30af\u30e9\u30b9\u306e\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30e1\u30bd\u30c3\u30c9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
\n- \n
\u79c1\u305f\u3061\u306f\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3057\u3066Pattern\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001Pattern.CASE_INSENSITIVE\u306f\u5927\u6587\u5b57\u3068\u5c0f\u6587\u5b57\u3092\u533a\u5225\u305b\u305a\u306b\u30de\u30c3\u30c1\u30f3\u30b0\u3092\u884c\u3044\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
Pattern\u30af\u30e9\u30b9\u306f\u307e\u305f\u3001String\u30af\u30e9\u30b9\u306esplit()\u30e1\u30bd\u30c3\u30c9\u306b\u4f3c\u305fsplit(String)\u30e1\u30bd\u30c3\u30c9\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
Pattern\u30af\u30e9\u30b9\u306etoString()\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u6b63\u898f\u8868\u73fe\u306e\u6587\u5b57\u5217\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
Matcher\u30af\u30e9\u30b9\u306b\u306fstart()\u30e1\u30bd\u30c3\u30c9\u3068end()\u30e1\u30bd\u30c3\u30c9\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30e1\u30bd\u30c3\u30c9\u3082\u3042\u308a\u3001\u30de\u30c3\u30c1\u30f3\u30b0\u304c\u5165\u529b\u6587\u5b57\u5217\u5185\u306e\u3069\u3053\u3067\u898b\u3064\u304b\u3063\u305f\u304b\u3092\u6b63\u78ba\u306b\u793a\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
Matcher\u30af\u30e9\u30b9\u306f\u307e\u305f\u3001\u6587\u5b57\u5217\u306e\u7f6e\u63db\u306b\u4f7f\u7528\u3059\u308breplaceAll(String replacement)\u30e1\u30bd\u30c3\u30c9\u3068replaceFirst(String replacement)\u30e1\u30bd\u30c3\u30c9\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/ol>\n\u30b7\u30f3\u30d7\u30eb\u306a\u4f8b\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3001\u3053\u308c\u3089\u306eJava\u306e\u6b63\u898f\u8868\u73fe\u30e1\u30bd\u30c3\u30c9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
package com.scdev.util;\r\n\r\nimport java.util.regex.Matcher;\r\nimport java.util.regex.Pattern;\r\n\r\npublic class RegexExamples {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\t\/\/ using pattern with flags\r\n\t\tPattern pattern = Pattern.compile(\"ab\", Pattern.CASE_INSENSITIVE);\r\n\t\tMatcher matcher = pattern.matcher(\"ABcabdAb\");\r\n\t\t\/\/ using Matcher find(), group(), start() and end() methods\r\n\t\twhile (matcher.find()) {\r\n\t\t\tSystem.out.println(\"Found the text \\\"\" + matcher.group()\r\n\t\t\t\t\t+ \"\\\" starting at \" + matcher.start()\r\n\t\t\t\t\t+ \" index and ending at index \" + matcher.end());\r\n\t\t}\r\n\r\n\t\t\/\/ using Pattern split() method\r\n\t\tpattern = Pattern.compile(\"\\\\W\");\r\n\t\tString[] words = pattern.split(\"one@two#three:four$five\");\r\n\t\tfor (String s : words) {\r\n\t\t\tSystem.out.println(\"Split using Pattern.split(): \" + s);\r\n\t\t}\r\n\r\n\t\t\/\/ using Matcher.replaceFirst() and replaceAll() methods\r\n\t\tpattern = Pattern.compile(\"1*2\");\r\n\t\tmatcher = pattern.matcher(\"11234512678\");\r\n\t\tSystem.out.println(\"Using replaceAll: \" + matcher.replaceAll(\"_\"));\r\n\t\tSystem.out.println(\"Using replaceFirst: \" + matcher.replaceFirst(\"_\"));\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306eJava\u6b63\u898f\u8868\u73fe\u306e\u4f8b\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u51fa\u529b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n
Found the text \"AB\" starting at 0 index and ending at index 2\r\nFound the text \"ab\" starting at 3 index and ending at index 5\r\nFound the text \"Ab\" starting at 6 index and ending at index 8\r\nSplit using Pattern.split(): one\r\nSplit using Pattern.split(): two\r\nSplit using Pattern.split(): three\r\nSplit using Pattern.split(): four\r\nSplit using Pattern.split(): five\r\nUsing replaceAll: _345_678\r\nUsing replaceFirst: _34512678\r\n<\/code><\/pre>\nJava\u306b\u304a\u3051\u308b\u6b63\u898f\u8868\u73fe\u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0a\u3067\u3059\u3002\u6700\u521d\u306fJava\u306e\u6b63\u898f\u8868\u73fe\u306f\u96e3\u3057\u304f\u611f\u3058\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u3057\u3070\u3089\u304f\u4f7f\u3063\u3066\u307f\u308b\u3068\u7c21\u5358\u306b\u5b66\u3073\u3001\u4f7f\u3044\u3053\u306a\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u79c1\u305f\u3061\u306eGitHub\u30ea\u30dd\u30b8\u30c8\u30ea\u304b\u3089\u3001\u5b8c\u5168\u306a\u30b3\u30fc\u30c9\u3068\u6b63\u898f\u8868\u73fe\u306e\u4f8b\u3092\u3055\u3089\u306b\u30c1\u30a7\u30c3\u30af\u30a2\u30a6\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Java\u306e\u6b63\u898f\u8868\u73fe\u3078\u3088\u3046\u3053\u305d\u3002Java\u3067\u306f\u3053\u308c\u306f\u6b63\u898f\u8868\u73fe\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u59cb\u3081\u305f\u6642\u3001Java\u306e\u6b63\u898f\u8868\u73fe\u306f\u79c1\u306b\u3068\u3063\u3066\u60aa\u5922\u3067\u3057\u305f\u3002\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306f\u3001Java\u306e\u6b63\u898f\u8868\u73fe\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u306e\u3092\u52a9\u3051\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-795","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\n
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