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
Processing...

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 = "r'\\d{10}'"; final String string = "{\"type\": \"text\", \"bbox\": [146, 301, 1118, 1619], \"res\": [{\"text\": \"H2nh th\\u1ee9c s\\u1edf h\\u1eefu v\\u1ed1n\", \"confidence\": 0.9523688554763794, \"text_region\": [[185.0, 344.0], [431.0, 344.0], [431.0, 372.0], [185.0, 372.0]]}, {\"text\": \"T\\u1ed5ng C\\u00f4ng ty C\\u1ea3ng H\\u00e0ng kh\\u00f4ng Vi\\u1ec7t Nam - CTCP(g\\u1ecdi t\\u1eaft l\\u00e0\\\"T\\u1ed5ng C\\u00f4ng ty), l\\u00e0\", \"confidence\": 0.9614211916923523, \"text_region\": [[185.0, 401.0], [1101.0, 401.0], [1101.0, 434.0], [185.0, 434.0]]}, {\"text\": \"c\\u00f4ng ty c\\u1ed5 ph\\u1ea7n, \\u0111\\u01b0\\u1ee3c c\\u1ed5 ph\\u1ea7n h\\u00f3a t\\u1eeb Doanh nghi\\u1ec7p Nh\\u00e0 n\\u01b0\\u1edbc - T\\u1ed5ng C\\u00f4ng ty C\\u1ea3ng\", \"confidence\": 0.974237859249115, \"text_region\": [[181.0, 431.0], [1101.0, 433.0], [1101.0, 466.0], [181.0, 464.0]]}, {\"text\": \"H\\u00e0ng kh\\u00f4ng Vi\\u1ec7t Nam (C\\u00f4ng ty tr\\u00e1ch nhi\\u1ec7m h\\u1eefu h\\u1ea1n m\\u1ed9t th\\u00e0nh vi\\u00ean), theo Quy\\u1ebft \\u0111\\u1ecbnh\", \"confidence\": 0.9749579429626465, \"text_region\": [[181.0, 461.0], [1099.0, 463.0], [1099.0, 496.0], [181.0, 495.0]]}, {\"text\": \"s\\u1ed11710/Q\\u0110-TTg ng\\u00e0y 06 th\\u00e1ng 10 n\\u0103m 2015 c\\u1ee7aTh\\u1ee7 t\\u01b0\\u1edbng Ch\\u00ednh ph\\u1ee7, ho\\u1ea1t \\u0111\\u1ed9ng\", \"confidence\": 0.9510553479194641, \"text_region\": [[181.0, 491.0], [1101.0, 495.0], [1101.0, 528.0], [181.0, 525.0]]}, {\"text\": \"theo Gi\\u1ea5y ch\\u1ee9ng nh\\u1eadn \\u0111\\u0103ng k\\u00fd doanh nghi\\u1ec7p s\\u1ed10311638525 ng\\u00e0y 22 th\\u00e1ng 3 n\\u0103m\", \"confidence\": 0.9323961138725281, \"text_region\": [[185.0, 525.0], [1097.0, 525.0], [1097.0, 553.0], [185.0, 553.0]]}, {\"text\": \"2012 v\\u00e0 c\\u00e1c Gi\\u1ea5y ch\\u1ee9ng nh\\u1eadn \\u0111\\u0103ng k\\u00fd doanh nghi\\u1ec7p \\u0111i\\u1ec1u chinh.Gi\\u1ea5y ch\\u1ee9ng nh\\u1eadn\", \"confidence\": 0.9408513307571411, \"text_region\": [[185.0, 557.0], [1097.0, 557.0], [1097.0, 585.0], [185.0, 585.0]]}, {\"text\": \"\\u0111\\u0103ng k\\u00fd doanh nghi\\u1ec7p \\u0111i\\u1ec1u chinh m\\u1edbi nh\\u1ea5t l\\u1ea7n th\\u1ee9 8 ng\\u00e0y 15 th\\u00e1ng 8 n\\u1ea7m 2018 do S\\u1edf\", \"confidence\": 0.9612582921981812, \"text_region\": [[183.0, 583.0], [1101.0, 585.0], [1101.0, 619.0], [183.0, 617.0]]}, {\"text\": \"K\\u1ebf ho\\u1ea1ch v\\u00e0 \\u0110\\u1ea7u t\\u01b0 Th\\u00e0nh ph\\u1ed1 H\\u1ed3 Ch\\u00ed Minh c\\u1ea5p.\", \"confidence\": 0.9700883626937866, \"text_region\": [[181.0, 613.0], [708.0, 615.0], [708.0, 649.0], [181.0, 647.0]]}, {\"text\": \"Ng\\u00e0y 12/11/2018,B\\u1ed9 Giao th\\u00f4ng V\\u1eadn t\\u1ea3i \\u0111\\u00e3 chuy\\u1ec3n giao quy\\u1ec1n \\u0111\\u1ea1i di\\u1ec7n ch\\u1ee7 s\\u1edf h\\u1eefu v\\u1ed1n nh\\u00e0\", \"confidence\": 0.9736440181732178, \"text_region\": [[185.0, 675.0], [1099.0, 675.0], [1099.0, 704.0], [185.0, 704.0]]}, {\"text\": \"n\\u01b0\\u1edbc t\\u1ea1i ACV v\\u1ec1 cho Uy Ban Qu\\u1ea3n l\\u00fd v\\u1ed1n Nh\\u00e0 n\\u01b0\\u1edbc t\\u1ea1i Doanh nghi\\u1ec7p theo quy \\u0111\\u1ecbnh t\\u1ea1i Ngh\\u1ecb\", \"confidence\": 0.9769458770751953, \"text_region\": [[185.0, 704.0], [1097.0, 704.0], [1097.0, 732.0], [185.0, 732.0]]}, {\"text\": \"\\u0111\\u1ecbnh s\\u1ed1 131/2018/N\\u0110-CP ng\\u00e0y 29/09/2018 v\\u00e0 Quy\\u1ebft \\u0111\\u1ecbnh s\\u1ed1 1515/QD-TTg ng\\u00e0y 09/11/2018.\", \"confidence\": 0.9572672843933105, \"text_region\": [[187.0, 732.0], [1090.0, 732.0], [1090.0, 761.0], [187.0, 761.0]]}, {\"text\": \"T\\u00ean gi \\u0111\\u1ea7y \\u0111\\u1ee7 b\\u1eafng ti\\u1ebfng Vi\\u1ec7t: T\\u1ed5ng C\\u00f4ng ty C\\u1ea3ng H\\u00e0ng kh\\u00f4ng Vi\\u1ec7t Nam -CTCP.\", \"confidence\": 0.9677777290344238, \"text_region\": [[185.0, 789.0], [1067.0, 789.0], [1067.0, 823.0], [185.0, 823.0]]}, {\"text\": \"T\\u00ean giao d\\u1ecbch Qu\\u1ed1c t\\u1ebf: Airports Corporat\\u00econ o\\u00ed Vietnam.\", \"confidence\": 0.9640689492225647, \"text_region\": [[187.0, 853.0], [780.0, 853.0], [780.0, 881.0], [187.0, 881.0]]}, {\"text\": \"T\\u00ean vi\\u1ebft t\\u1eaft:ACV.\", \"confidence\": 0.9815711975097656, \"text_region\": [[183.0, 910.0], [383.0, 910.0], [383.0, 943.0], [183.0, 943.0]]}, {\"text\": \"Tr\\u1ee5 s\\u1edf ch\\u00ednh: S\\u1ed1 58 Tr\\u01b0\\u1eddng S\\u01a1n, Ph\\u01b0\\u1eddng 2, Qu\\u1eadn T\\u00e2n B\\u00ecnh, Th\\u00e0nh ph\\u1ed1 H\\u1ed3 Ch\\u00ed Minh.\", \"confidence\": 0.9652988910675049, \"text_region\": [[183.0, 970.0], [1090.0, 968.0], [1090.0, 1002.0], [183.0, 1003.0]]}, {\"text\": \"C\\u1ed5 phi\\u1ebfu c\\u1ee7a T\\u1ed5ng C\\u00f4ng ty \\u0111\\u01b0\\u1ee3c giao d\\u1ecbch tr\\u00ean th\\u1ecb tr\\u01b0\\u1eddng UPCOM t\\u1eeb ng\\u00e0y 21 th\\u00e1ng\", \"confidence\": 0.9594874382019043, \"text_region\": [[185.0, 1032.0], [1105.0, 1032.0], [1105.0, 1066.0], [185.0, 1066.0]]}, {\"text\": \"11n\\u0103m 2016, v\\u1edbi m\\u0103 ch\\u01b0mg kho\\u00e1n .ACV.\", \"confidence\": 0.8801693320274353, \"text_region\": [[185.0, 1066.0], [643.0, 1066.0], [643.0, 1094.0], [185.0, 1094.0]]}, {\"text\": \"Ng\\u00e0nh ngh\\u1ec1 kinh doanh v\\u00e0 ho\\u1ea1t \\u0111\\u1ed9ng ch\\u00ednh\", \"confidence\": 0.9726917147636414, \"text_region\": [[180.0, 1128.0], [665.0, 1128.0], [665.0, 1156.0], [180.0, 1156.0]]}, {\"text\": \"Theo Gi\\u1ea5y ch\\u01b0ng nh\\u1eadn \\u0111\\u0103ng k\\u00fd doanh nghi\\u1ec7p thay \\u0111\\u1ed5i,T\\u1ed5ng C\\u00f4ng ty \\u0111\\u00e3 \\u0111\\u0103ng k\\u00fd c\\u00e1c\", \"confidence\": 0.9440533518791199, \"text_region\": [[181.0, 1183.0], [1101.0, 1179.0], [1101.0, 1216.0], [182.0, 1220.0]]}, {\"text\": \"ho\\u1ea1t \\u0111\\u1ed9ng kinh \\u0111oanh ch\\u00ednh trong c\\u00e1c l\\u0129nh v\\u01b0c sau:\", \"confidence\": 0.9525245428085327, \"text_region\": [[187.0, 1222.0], [724.0, 1222.0], [724.0, 1245.0], [187.0, 1245.0]]}, {\"text\": \"Ho\\u1ea1t \\u0111\\u1ed9ng d\\u1ecbch v\\u1ee5 h\\u1ed7 tr\\u1ee3 tr\\u1ef1c ti\\u1ebfp cho v\\u1eadn t\\u1ea3i h\\u00e0ng kh\\u00f4ng: \\u0110\\u1ea7u t\\u01b0, qu\\u1ea3n l\\u00fd v\\u1ed1n\", \"confidence\": 0.9798429608345032, \"text_region\": [[242.0, 1277.0], [1099.0, 1273.0], [1099.0, 1307.0], [243.0, 1310.0]]}, {\"text\": \"\\u0111\\u1ea7u t\\u01b0, tr\\u1ef1c ti\\u1ebfp s\\u1ea3n xu\\u1ea5t, kinh doanh t\\u1ea1i c\\u00e1c c\\u1ea3ng h\\u00e0ng kh\\u00f4ng s\\u00e2n bay: \\u0111\\u1ea7u t\\u01b0, khai\", \"confidence\": 0.9759737849235535, \"text_region\": [[183.0, 1307.0], [1101.0, 1305.0], [1101.0, 1339.0], [183.0, 1340.0]]}, {\"text\": \"th\\u00e1c k\\u1ebft c\\u1ea5u h\\u1ea1 t\\u1ea7ng trang b\\u1ecb, thi\\u1ebft b\\u1ecb c\\u1ea3ng h\\u00e0ng kh\\u00f4ng s\\u00e2n bay: cung c\\u1ea5p d\\u1ecbch v\\u1ee5 b\\u00e1o\", \"confidence\": 0.9767631888389587, \"text_region\": [[183.0, 1339.0], [1101.0, 1335.0], [1101.0, 1369.0], [183.0, 1372.0]]}, {\"text\": \"\\u0111\\u1ea3m an ninh h\\u00e0ng kh\\u00f4ng, an to\\u00e0n h\\u00e0ng kh\\u00f4ng: cung \\u1eefng c\\u00e1c d\\u1ecbch v\\u1ee5 b\\u1ea3o d\\u01b0\\u1edfng t\\u00e0u\", \"confidence\": 0.971575140953064, \"text_region\": [[183.0, 1369.0], [1101.0, 1365.0], [1101.0, 1399.0], [183.0, 1402.0]]}, {\"text\": \"bay, ph\\u1ee5 t\\u1eebng, thi\\u1ebft b\\u1ecb h\\u1ea3ng kh\\u00f4ng v\\u00e0 c\\u00e1c trang thi\\u1ebft b\\u1ecb kh\\u00e1c: cung \\u01b0ng c\\u00e1c d\\u1ecbch v\\u1ee5 k\\u1ef9\", \"confidence\": 0.9634244441986084, \"text_region\": [[181.0, 1399.0], [1099.0, 1395.0], [1099.0, 1429.0], [181.0, 1433.0]]}, {\"text\": \"thu\\u1eadt, d\\u1ecbch v\\u1ee5 khoa h\\u1ecdc, c\\u00f4ng ngh\\u1ec7 trong v\\u00e0 ngo\\u00e0i n\\u01b0\\u1edbc: cung \\u01b0ng c\\u00e1c d\\u1ecbch v\\u1ee5 k\\u1ef9 thu\\u1eadt\", \"confidence\": 0.9615932703018188, \"text_region\": [[183.0, 1431.0], [1101.0, 1425.0], [1101.0, 1457.0], [183.0, 1463.0]]}, {\"text\": \"th\\u01b0\\u01a1ng m\\u1ea1i m\\u1eb7t \\u0111\\u1ea5t: c\\u00e1c d\\u1ecbch v\\u1ee5 t\\u1ea1i nh\\u00e0 ga h\\u00e0nh kh\\u00e1ch, ga h\\u00e0ng h\\u00f3a: xu\\u1ea5t nh\\u1eadp kh\\u1ea7u,\", \"confidence\": 0.9687554240226746, \"text_region\": [[181.0, 1459.0], [1099.0, 1456.0], [1099.0, 1489.0], [181.0, 1493.0]]}, {\"text\": \"mua b\\u00e1n v\\u1eadt t\\u01b0, ph\\u1ee5 t\\u00f9ng, thi\\u1ebft b\\u1ecb h\\u00e0ng kh\\u00f4ng: d\\u1ecbch v\\u1ee5 \\u0111\\u1ea1i l\\u00fd cho c\\u00e1c h\\u00e3ng h\\u00e0ng kh\\u00f4ng,\", \"confidence\": 0.9722899794578552, \"text_region\": [[181.0, 1489.0], [1099.0, 1486.0], [1099.0, 1518.0], [181.0, 1521.0]]}, {\"text\": \"c\\u00e1c c\\u00f4ng ty v\\u1eadn t\\u1ea3i, du l\\u1ecbch, c\\u00e1c nh\\u00e0 s\\u1ea3n xu\\u1ea5t, cung \\u01b0ng t\\u00e0u bay, v\\u1eadt t\\u01b0 ph\\u1ee5 t\\u1eebng, thi\\u1ebft\", \"confidence\": 0.9632856249809265, \"text_region\": [[183.0, 1519.0], [1103.0, 1516.0], [1103.0, 1549.0], [183.0, 1553.0]]}, {\"text\": \"b\\u1ecb t\\u00e0u bay v\\u00e0 trang thi\\u1ebft b\\u1ecb chuy\\u00ean ng\\u00e0nh h\\u00e0ng kh\\u00f4ng: cung \\u1eefng d\\u1ecbch v\\u1ee5 th\\u01b0\\u01a1ng\", \"confidence\": 0.9499178528785706, \"text_region\": [[183.0, 1550.0], [1105.0, 1546.0], [1105.0, 1580.0], [183.0, 1583.0]]}], \"img_idx\": 7}"; 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