Regular Expressions 101

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  • 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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

~
~
guxm

Test String

Substitution

Processing...

Code Generator

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "^\n" + "(?<frequency>[0-9]+) \\W+\n" + "(?<word>\\pL+(?:,\\h\\pL+|\\W)*) \\h+\n" + "(?<gender> [\\pL()]+ (?:, \\h* [\\pL()]+)* ) \\h+\n" + "(?<word_en> [^•]*[^•\\s]) \\h* \\R\n" + "• \\h*\n" + "(?<sent_esp> [^–]*[^\\s–] ) \\s*–\\s*\n" + "(?<sent_en> .* (?:\\R .*)*? ) \\h* \\R\n" + "(?<num1> [0-9]+) \\h* \\| \\h*\n" + "(?<num2> .*\\S)"; final String string = "1\n\n" + "el, la art the (+m, f)\n" + "• el diccionario tenía también frases útiles – the dictionary also had\n" + "useful phrases\n" + "2055835 | 201481381\n\n" + "2\n\n" + "de prep of, from\n" + "• es el hijo de un amigo mío – he is the son of a friend of mine\n" + "1104364 | 133341468\n\n" + "3\n\n" + "que conj that, which\n" + "• dice que no quiere estudiar – he says that he doesn’t want to\n" + "study\n" + "543408 | 70319525\n\n" + "4\n\n" + "y conj and\n" + "• saben leer y escribir – they know how to read and write\n" + "524574 | 56511956\n\n" + "5\n\n" + "en prep in, on\n" + "• vivo en el segundo piso – I live on the second floor\n" + "496295 | 49340069\n\n" + "6\n\n" + "un art a, an\n" + "• era un hombre simpático – he was a nice man\n" + "381976 | 37389547\n\n" + "7\n\n" + "ser v to be (norm)\n" + "• la primera persona narrativa puede ser por el protagonista – the\n" + "first-person narrative can be through the protagonist\n" + "324390 | 40017214\n\n" + "8\n\n" + "a prep to, at\n" + "• me voy al extranjero por el verano – I am going abroad for the\n" + "summer\n" + "328540 | 48746618\n\n" + "9\n\n" + "él pron he, [ellos] them (m)\n" + "• él es bastante simpático – he is very nice\n" + "428383 | 2743194\n\n" + "10\n\n" + "lo art the (+neut)\n" + "• lo mejor es estudiar mucho – the best thing is to study a lot\n" + "346026 | 31016059\n\n" + "11\n\n" + "no adv no\n" + "• no tiene dinero – he has no money\n" + "198473 | 21970515 +o\n\n" + "12\n\n" + "su adj his/her/their/your (–fam)\n" + "• ¿Quién era? ¿Su hermana? ¿Su amiga? – Who was it? His sister?\n" + "Her friend?\n" + "173372 | 17883988\n\n" + "13\n\n" + "haber v to have (+Ved)\n" + "• no ha dicho nada – he hasn’t said a thing\n" + "155853 | 15650271\n\n" + "14\n\n" + "con prep with\n" + "• hay un hombre con ella – there is a man with her\n" + "163958 | 18316135\n\n" + "15\n\n" + "por prep by, for, through\n" + "• caminamos por el parque – we walked through the park\n" + "174450 | 17512892\n\n" + "16\n\n" + "para prep for, to, in order to\n" + "• ¡Tengo una sorpresa sensacional para ti! – I have a wonderful\n" + "surprise for you!\n" + "112694 | 16947562\n\n" + "17\n\n" + "mí pron me (obj prep)\n" + "• el regalo era para mí – the gift was for me\n" + "114124 | 608449 +o\n\n" + "18\n\n" + "lo pron [3rd person] (dir obj-m)\n" + "• lo compré en la tienda – I bought it at the store\n" + "101112 | 5126699 +o\n\n" + "19\n\n" + "tener v to have\n" + "• Mi padre tiene varios relojes antiguos. – My father has several\n" + "antique watches.\n" + "85865 | 11087983 +o\n\n" + "20\n\n" + "como conj like, as\n" + "• ser compositor en España es como ser torero en Finlandia –\n" + "being a composer in Spain is like being a bullfighter in Finland\n" + "98660 | 12480595\n\n" + "21\n\n" + "estar v to be (location, change from norm)\n" + "• él está en el trabajo – he is at work\n" + "88421 | 9574000\n\n" + "22\n\n" + "me pron me (obj)\n" + "• ¿Cuando me va a llamar? – When is he going to call me?\n" + "64024 | 8211349 +o\n\n" + "23\n\n" + "más adj more\n" + "• él necesitaba más dinero – he needed more money\n" + "86998 | 9003898\n\n" + "24\n\n" + "este adj this (m) [esta (f)]\n" + "• es igual en el este como en el oeste – it is the same in the east as\n" + "in the west\n" + "73920 | 13208363\n\n" + "25\n\n" + "le pron [3rd person] (indir obj)\n" + "• nunca le dijo la verdad – she never told him the truth\n" + "64833 | 7787199\n\n" + "26\n\n" + "hacer v to do, make\n" + "• he podido hacer lo que me gusta – I have been able to do what I\n" + "like\n" + "64199 | 8808576\n\n" + "27\n\n" + "se pron [“reflexive” marker]\n" + "• el saber de los geógrafos griegos se difundió por Europa – Greek\n" + "knowledge of geography spread throughout Europe\n" + "60393 | 28984360 +w\n\n" + "28\n\n" + "yo pron I (subj)\n" + "• ¡Yo soy el padre! – I am the father!\n" + "45822 | 10894793 +o +w\n\n" + "29\n\n" + "o conj or\n" + "• sí esperaba uno o dos muertos – yes, he expected one or two\n" + "deaths\n" + "71054 | 9100644\n\n" + "30\n\n" + "pero conj but, yet, except\n" + "• no significa nada para mí, pero no puedo olvidarla – it means\n" + "nothing to me, but I can’t forget it\n" + "66748 | 6871867\n\n" + "31\n\n" + "decir v to tell, say\n" + "• Parece que dice la verdad. – It seems like he is telling the truth.\n" + "61678 | 6016427 +o\n\n" + "32\n\n" + "poder v to be able to, can\n" + "• Con estos datos se puede tener una primera idea del\n" + "mecanismo. – With these facts we can begin to understand the\n" + "mechanism\n" + "61177 | 9248731\n\n" + "33\n\n" + "ir v to go\n" + "• ¿Quieres ir a la playa este fin de semana? – Do you want to go to\n" + "the beach this weekend?\n" + "52054 | 4435468 +o\n\n" + "34\n\n" + "ese adj that (m) [esa (f)]\n" + "• ¿Dónde viven esas mujeres? – Where do these women live?\n" + "48535 | 4683205 +o\n\n" + "35\n\n" + "otro adj other, another\n" + "• No comparte su taxi nunca conotrosviajeros a menos que les\n" + "conoce. – Don’t share your taxi with other travelers unless you\n" + "know them.\n" + "54762 | 5431865\n\n" + "36\n\n" + "si conj if, whether\n" + "• si quiere cazar, vamos a cazar – if he wants to hunt, let’s go\n" + "hunting\n" + "38328 | 6519137\n\n" + "37\n\n" + "mi adj my\n" + "• mi casa es su casa – my house is your house\n" + "34310 | 4766226\n\n" + "38\n\n" + "ver v to see\n" + "• había que subir para ver las ruinas – you have to climb up to see\n" + "the ruins\n" + "39015 | 4122615\n\n" + "39\n\n" + "ya adv already, still\n" + "• su marido ya ha dicho todo – her husband has already said it all\n" + "37257 | 3961260 +o\n\n" + "40\n\n" + "porque conj because\n" + "• lo vendo sólo porque tengo un problema muy grande – I am only\n" + "selling it because I am in a predicament\n" + "34109 | 3154550 +o\n\n" + "41\n\n" + "mucho adj much, many, a lot (ADV)\n" + "• por lo visto tienen mucho dinero – apparently they have a lot of\n" + "money\n" + "35069 | 4459289 +o\n\n" + "42\n\n" + "dar v to give\n" + "• me dio esta carta para ud – he gave me this letter for you\n" + "32999 | 3900029 +o\n\n" + "43\n\n" + "muy adv very, really\n" + "• está muy contento con mi trabajo – she is very happy with my\n" + "work\n" + "32854 | 3217244 +o\n\n" + "44\n\n" + "saber v to know (a fact), find out\n" + "• se necesita humildad para saber reconocer las propias faltas –\n" + "you need humility to know how to recognize your own faults\n" + "27238 | 2642079 +o\n\n" + "45\n\n" + "sí adv yes\n" + "• quiero una respuesta concreta: sí o no – I need a solid answer:\n" + "yes or no\n" + "31716 | 1100318 +o\n\n" + "46\n\n" + "año nm year\n" + "• no lo supo hasta casi un año después – he didn’t find out until\n" + "almost a year later\n" + "37168 | 3792004\n\n" + "47\n\n" + "ti pron you (obj prep-sg/+fam)\n" + "• no, la carta no es para ti – no, the letter is not for you\n" + "29283 | 366540 +o\n\n" + "48\n\n" + "te pron you (obj/+fam)\n" + "• ¿No te han hablado? – They haven’t spoken with you?\n" + "19928 | 4017417 +o\n\n" + "49\n\n" + "también adv also\n" + "• también habla italiano – she speaks Italian as well\n" + "31172 | 3209504\n\n" + "50\n\n" + "qué pron what?, which?, how (+ADJ)!\n" + "• no sé qué voy a hacer – I don’t know what I’m going to do\n" + "29722 | 2317175 +o\n\n" + "51\n\n" + "alguno adj some, a few\n" + "• habló algunas palabras con el agente de negocios – he spoke a\n" + "few words with the business agent\n" + "27224 | 3037373\n\n" + "52\n\n" + "nos pron us (obj)\n" + "• nos vio en la calle – he saw us on the street\n" + "17300 | 4445709 +o +w\n\n" + "53\n\n" + "tu adj your (+fam)\n" + "• ésta es tu casa y ésta es tu cama – this is your house and this is\n" + "your bed\n" + "8068 | 7260841 +w\n\n" + "54\n\n" + "sin prep without\n" + "• se habían quedado sin dinero – they were left without money\n" + "25332 | 2499874\n\n" + "55\n\n" + "mismo adj same\n" + "• pronunciando el mismo discurso en siete idiomas – giving the\n" + "same speech in seven languages\n" + "23973 | 3339470\n\n" + "56\n\n" + "eso pron that (n)\n" + "• y eso no es todo – and that isn’t everything\n" + "20972 | 2339488 +o\n\n" + "57\n\n" + "cuando adv when\n" + "• aquel libro es de mis nietos, cuando eran bebes todavía – that\n" + "book belonged to my grandchildren, when they were still babies\n" + "32690 | 71759\n\n" + "58\n\n" + "querer v to want, love\n" + "• quiero que este proceso salga con limpieza – I want this process\n" + "to go cleanly\n" + "20091 | 2897092\n\n" + "59\n\n" + "vez nf time (specific occurrence); en v. de: instead of\n" + "• es la primera vez que estoy junto al mar – this is the first time\n" + "that I have been near to the sea\n" + "27629 | 1558559\n\n" + "60\n\n" + "hasta prep until, up to, even (ADV)\n" + "• toda la noche, hasta las tres de la mañana – all night long, until\n" + "three in the morning\n" + "27638 | 2258791\n\n" + "61\n\n" + "la pron [3rd person] (dir obj-f)\n" + "• la puso en su bolsillo – he put it in his pocket\n" + "8190 | 7941346 +o +w\n\n" + "62\n\n" + "sobre prep on top of, over, about\n" + "• dejó el papel sobre la mesa y se fue – he left the paper on top of\n" + "the table and left\n" + "26590 | 3030210\n\n" + "63\n\n" + "entre prep between, among\n" + "• la cosa es entre tú y yo – the matter is between you and me\n" + "32379 | 2607736\n\n" + "64\n\n" + "dos num two\n" + "• la familia se reúne cada dos años – the family gets together every\n" + "two years\n" + "27487 | 2017874\n\n" + "65\n\n" + "día nm day\n" + "• cada día hay más problemas – every day there are more\n" + "problems\n" + "20735 | 2577473\n\n" + "66\n\n" + "grande adj large, great, big\n" + "• tiene los grandes ojos negros y bonitos – she has the biggest and\n" + "most beautiful black eyes\n" + "29813 | 2030849\n\n" + "67\n\n" + "así adv like that\n" + "• la vida es así – life is like that\n" + "21331 | 2321804\n\n" + "68\n\n" + "pasar v to pass, spend (time)\n" + "• no ha pasado ni un bus – not a single bus has passed by\n" + "20946 | 1905621\n\n" + "69\n\n" + "cosa nf thing\n" + "• estoy ya interesado en otra cosa – I am interested in a different\n" + "matter\n" + "17977 | 1903169 +o\n\n" + "70\n\n" + "desde prep from, since\n" + "• Lo habia pensado desde el principio que era una mal idea. – I\n" + "thought from the beginning that this was a bad idea.\n" + "24743 | 2424665\n\n" + "71\n\n" + "deber v should, ought to; to owe\n" + "• la cosa está en el lugar donde debe estar – the thing is in the\n" + "place where it should be\n" + "19965 | 3248053\n\n" + "72\n\n" + "ella pron she, [ellas] them (f)\n" + "• ella es muy estudiosa – she is very studious\n" + "18720 | 1491405\n\n" + "73\n\n" + "pues conj then, well then\n" + "• pues, venga usted cuando quiera – well then, come whenever\n" + "you want\n" + "18535 | 1210256 +o\n\n" + "74\n\n" + "entonces adv so, then\n" + "• vamos entonces a cambiarlo – then we are going to change it\n" + "19759 | 888406 +o\n\n" + "75\n\n" + "llegar v to arrive\n" + "• por fin llegamos al fondo de la catarata – we finally arrived at the\n" + "bottom of the waterfall\n" + "18877 | 1848469\n\n" + "76\n\n" + "poco adj little, few, a little bit (adv)\n" + "• trabajó poco tiempo con él – he worked a little while with him\n" + "18209 | 1845555\n\n" + "77\n\n" + "nuestro adj our\n" + "• no servía para nuestro país porque somos diferentes – it was no\n" + "good for our contry because we’re different\n" + "13411 | 3496070 +w\n\n" + "78\n\n" + "bien adv well\n" + "• el número de bienes que pueda poseer en un momento dado –\n" + "the number of goods one possesses in a given moment\n" + "16402 | 1959560 +o\n\n" + "79\n\n" + "ni conj not even, neither, nor\n" + "• pero ni eso me tranquilizó – but not even that reassured me\n" + "16340 | 1927472\n\n" + "80\n\n" + "tiempo nm time (general)\n" + "• ha estado mucho tiempo con ella – he has been with her a long\n" + "time\n" + "18408 | 1921017\n\n" + "81\n\n" + "ahora adv now\n" + "• lo importante ahora es contarte lo que le pasó – the important\n" + "thing now is to tell you what happened\n" + "17072 | 1591817 +o\n\n" + "82\n\n" + "primero adj first\n" + "• Primero, vamos a ir al supermercado. – First, we are going to go\n" + "to the grocery store.\n" + "20758 | 2484553\n\n" + "83\n\n" + "creer v to believe, think\n" + "• creo en la justicia de Dios – I believe in the justice of God\n" + "15928 | 1685972 +o\n\n" + "84\n\n" + "donde adv where\n" + "• no sé donde está la llave – I don’t know where the key is\n" + "17601 | 2151872\n\n" + "85\n\n" + "vida nf life\n" + "• ha dedicado toda la vida a la música – she has dedicated her life\n" + "to music\n" + "15149 | 2424426\n\n" + "86\n\n" + "dejar v to let, leave\n" + "• ella no dejó que yo lo olvidara – she didn’t let me forget it\n" + "14241 | 1881239\n\n" + "87\n\n" + "nada pron nothing, (not) at all\n" + "• no hay nada que hacer – there is nothing to do\n" + "14024 | 1498787 +o\n\n" + "88\n\n" + "tanto adj so much, so many\n" + "• no podía creer que haya tanta gente junta – I couldn’t believe\n" + "there were so many people together\n" + "16618 | 1960237\n\n" + "89\n\n" + "parecer v to seem, look like\n" + "• Mi burra es tan flaca parece un esqueleto. – My donkey is so\n" + "thin he looks like a skeleton.\n" + "15096 | 1330117\n\n" + "90\n\n" + "hablar v to speak, talk\n" + "• algunos hablan quechua, español, e inglés – some of them\n" + "speak Quechua, Spanish, and English\n" + "14325 | 1432852 +o\n\n" + "91\n\n" + "poner v to put (on), get (+ADJ)\n" + "• puso el cuchillo en la mano – he put the knife in his hand\n" + "14619 | 1657298\n\n" + "92\n\n" + "parte nf part, portion\n" + "• el arte es una parte tan importante de la cultura – art is such an\n" + "important part of culture\n" + "20938 | 1744336\n\n" + "93\n\n" + "eh interj eh\n" + "• Te interesa esta bufanda, ¿eh? – You are interested in this scarf,\n" + "eh?\n" + "16011 | 33653 +o\n\n" + "94\n\n" + "nuevo adj new\n" + "• marcaba el comienzo de una nueva vida para mí – it marked the\n" + "beginning of a new life for me\n" + "19641 | 1964400\n\n" + "95\n\n" + "sólo adv only, just\n" + "• no siempre vestía ropa de mujer; sólo en carnaval – I don’t\n" + "always wear women’s clothes; only during carnival\n" + "15824 | 2043480\n\n" + "96\n\n" + "siempre adv always, forever\n" + "• siempre ha sido así – she has always been like that\n" + "13141 | 1671829\n\n" + "97\n\n" + "hombre nm man, mankind, husband\n" + "• yo soy un hombre de pocas necesidades – I am a man of few\n" + "needs\n" + "14773 | 1240825\n\n" + "98\n\n" + "bueno adv well . . .\n" + "• Bueno, ¿y ahora qué hacemos? – Well, so what are we going to\n" + "do now?\n" + "15729 | 1108838 +o\n\n" + "99\n\n" + "seguir v to follow, keep on\n" + "• no la puedo seguir porque habla demasiado rápido – I couldn’t\n" + "keep up because she was speaking so quickly\n" + "14081 | 1824937\n\n" + "100\n\n" + "quedar v to remain, stay\n" + "• El aire empezó a quedarse quieto. – The air began to remain still.\n" + "14040 | 1348837"; final String subst = "\\1\\t\\2\\t\\3\\t\\4\\t\\5\\t\\6\\t"; final Pattern pattern = Pattern.compile(regex, Pattern.UNICODE_CASE | Pattern.COMMENTS | Pattern.MULTILINE); final Matcher matcher = pattern.matcher(string); // The substituted value will be contained in the result variable final String result = matcher.replaceAll(subst); System.out.println("Substitution result: " + result); } }

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