Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "(\"text\":\\s*\\{\\s*\"ja_JP\":\\s*\")([^\"]*)\""; final String string = "\"textList\": [\n" + " {\n" + " \"id\": 4,\n" + " \"name\": \"modeselect\",\n" + " \"folder\": true, \"children\": [\n" + " {\n" + " \"id\": 13,\n" + " \"name\": \"Motion\",\n" + " \"fontId\": 6,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Motion\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 12,\n" + " \"name\": \"Story\",\n" + " \"fontId\": 7,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Story\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 11,\n" + " \"name\": \"Main_Character\",\n" + " \"fontId\": 6,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Main Character\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 5,\n" + " \"name\": \"Mode_select\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Mode Select\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 24,\n" + " \"name\": \"Story_Mode\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Story Mode\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 25,\n" + " \"name\": \"Battle_Mode\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Battle Mode\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 8297,\n" + " \"name\": \"Dictionary\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Dictionary\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 46,\n" + " \"name\": \"Z_desition\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Z key:OK\\nC key:Back\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 47,\n" + " \"name\": \"back_to_the_title\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Back to the title?\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 51,\n" + " \"name\": \"select_mode\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Select Mode\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 8298,\n" + " \"name\": \"Go_to_the_Story_Mode\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Go to the Story Mode?\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 8299,\n" + " \"name\": \"Go_to_the_Battle_Mode\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Go to the Battle Mode?\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 8300,\n" + " \"name\": \"Go_to_the_Dictionary\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Go to the Dictionary?\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 48,\n" + " \"name\": \"ok\",\n" + " \"fontId\": 8,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"OK\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 49,\n" + " \"name\": \"cancel\",\n" + " \"fontId\": 8,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Cancel\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 7,\n" + " \"name\": \"Story_outline\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"自由奔放で傲慢な魔族\\nであるアストリア。\\nアストリアは最近\\n地上に住まう種族の\\n殲滅に勤しんでいた。\\n次第に恐怖と畏れから\\n地上に住まう者達に名が\\n知れ渡り始めていた。\\nある日、アストリアの\\n元に面倒事が\\n持ち込まれる・・・\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 6,\n" + " \"name\": \"character_name\",\n" + " \"folder\": true, \"children\": [\n" + " {\n" + " \"id\": 8,\n" + " \"name\": \"Astoria\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Astoria\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 19,\n" + " \"name\": \"Test2_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Test2\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 20,\n" + " \"name\": \"Test3_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Test3\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 21,\n" + " \"name\": \"Test4_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Test4\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 22,\n" + " \"name\": \"Test5_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Test5\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 23,\n" + " \"name\": \"Test6_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Test6\" },\n" + " \"folder\": false\n" + " }\n" + " ]\n" + " },\n" + " {\n" + " \"id\": 9,\n" + " \"name\": \"story_name\",\n" + " \"folder\": true, \"children\": [\n" + " {\n" + " \"id\": 10,\n" + " \"name\": \"Story1_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"1. 魔族娘の自由旅\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 14,\n" + " \"name\": \"Story2_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"2. \" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 15,\n" + " \"name\": \"Story3_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"3. \" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 16,\n" + " \"name\": \"Story4_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"4. \" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 17,\n" + " \"name\": \"Story5_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"5. \" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 18,\n" + " \"name\": \"Story6_name\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"6. \" },\n" + " \"folder\": false\n" + " }\n" + " ]\n" + " }\n" + " ]\n" + " },\n" + " {\n" + " \"id\": 26,\n" + " \"name\": \"stageselect\",\n" + " \"folder\": true, \"children\": [\n" + " {\n" + " \"id\": 31,\n" + " \"name\": \"Stage_select\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Stage Select\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 32,\n" + " \"name\": \"GameStart\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Game Start\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 33,\n" + " \"name\": \"Enemy_Character\",\n" + " \"fontId\": 6,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Enemy Character\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 50,\n" + " \"name\": \"back_to_the_modeselect\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"Back to the Mode Select?\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 27,\n" + " \"name\": \"character_name_stage\",\n" + " \"folder\": true, \"children\": [\n" + " {\n" + " \"id\": 34,\n" + " \"name\": \"Leonor\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Leonor\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 35,\n" + " \"name\": \"Riz\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Riz\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 36,\n" + " \"name\": \"Mary\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Mary\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 37,\n" + " \"name\": \"Koyo\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Koyo\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 38,\n" + " \"name\": \"Beryl\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Beryl\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 39,\n" + " \"name\": \"Amelia\",\n" + " \"fontId\": 5,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \" Amelia\" },\n" + " \"folder\": false\n" + " }\n" + " ]\n" + " },\n" + " {\n" + " \"id\": 28,\n" + " \"name\": \"stage_outline\",\n" + " \"folder\": true, \"children\": [\n" + " {\n" + " \"id\": 979,\n" + " \"name\": \"stage1_outline\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"アストリアは日課である\\n種族の殲滅を終わらせて\\n城で休息を取っていた。\\nそんな時、何者かが城に\\n侵入した事を察知する。\\n急ぎ様子を見に行くと\\nそこには興味深そうに\\n城を見渡す堕天使の\\nレオノールが居た・・・\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 980,\n" + " \"name\": \"stage2_outline\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"レオノールから\\n聞き出した情報を頼りに\\n妖狐を探していた。\\nその最中、魔族のリズが\\n道の真ん中で風景画を\\n描いているのを見かける\\n興味本位で声を掛け\\n描いている絵を見せて\\nもらったのだが・・・\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 981,\n" + " \"name\": \"stage3_outline\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"ジメジメと湿った空気が\\n充満している薄暗い\\n森の中を進んでいると\\n奇妙な帽子を被った\\n魔女のメアリーが\\nアストリアの前に\\n立ち塞がる。\\n妖狐の差し金で\\nアストリアの邪魔を\\nしようとするが・・・\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 982,\n" + " \"name\": \"stage4_outline\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"森を抜けた先に\\n古びた神社を見つけた\\nアストリア。\\n中から九つの白い尾を\\n持った妖狐の狐耀が\\n現れる。\\nアストリアと狐耀は\\n自身の主張を通すべく\\n力尽くで相手を屈服\\nさせようとする・・・\" },\n" + " \"folder\": false\n" + " },\n" + " {\n" + " \"id\": 983,\n" + " \"name\": \"stage5_outline\",\n" + " \"fontId\": 9,\n" + " \"letterSpacing\": 0,\n" + " \"lineSpacing\": 0,\n" + " \"text\": { \"ja_JP\": \"面倒事を終わらせて\\n気が晴れたアストリアに\\n竜人種のベリルが声を\\n掛けてくる。\\nアストリアが狐耀を\\n倒したことに対して\\nベリルは感謝を示す。\\nどうでも良い\\nアストリアは休むべく\\n帰ろうとするが・・・\" },\n" + " \"folder\": false"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); final Matcher matcher = pattern.matcher(string); while (matcher.find()) { System.out.println("Full match: " + matcher.group(0)); for (int i = 1; i <= matcher.groupCount(); i++) { System.out.println("Group " + i + ": " + matcher.group(i)); } } } }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html