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

/
/
iug

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 = "\\{(if|foreach)[\\s]*(.*?)[\\s]*\\}"; final String string = "{include file = \"include/common/head.tpl\" }\n\n\n" + "{include file = \"include/common/header.default.tpl\" }\n\n\n" + "{if $content['outer']['container']['centered'] }hvcenterContainer hvcenter long{/if}\n\n" + "{if !$content['inner']['payment']['payout']}\n\n\n\n" + "{if isset($content['inner']['pType']) }{$content.inner.pType}{else}1{/if}\n\n" + "{language data-case=\"title\" }31001001{/language}\n" + "{language data-case=\"title\" }31001002{/language}\n" + "{language data-case=\"title\" }31001003{/language}\n\n\n" + "{language}34012002{/language}\n\n" + "{language data-case=\"title\" data-sublang=\"31001001\" }21000033{/language}\n\n" + "{language}34012003{/language}\n\n" + "{language data-case=\"title\" data-sublang=\"31001002\" }21000033{/language}\n\n" + "{language}34012004{/language}\n\n" + "{language data-case=\"title\" data-sublang=\"31001003\" }21000033{/language}\n\n\n\n" + "{language data-case=\"title\" }31002001{/language}\n\n" + "{language data-case=\"title\" }31002002{/language}\n\n" + "{language data-case=\"title\" }31002003{/language}\n\n" + "{language data-case=\"title\" }31002004{/language}\n\n" + "{language data-case=\"title\" }31002005{/language}\n\n" + "{language data-case=\"title\" }31002006{/language}\n\n\n" + "{if $content['inner']['pType'] == 3 && $content['inner']['step']['count']['software'] >= 3 }active{/if}\n\n" + "{language}36000005{/language}\n\n" + "{language data-case=\"title\" }32013010{/language}\n\n" + "{language}34012005{/language}\n\n" + "{include file = \"include/project/auth.tpl\" }\n\n" + "{language data-case=\"title\" }21000001{/language}\n\n\n" + "{if $content['inner']['pType'] == 1 && $content['inner']['step']['count']['default'] >= 3 || $content['inner']['pType'] == 2 && $content['inner']['step']['count']['offer'] >= 3}active{/if}\n\n" + "{language data-case=\"title\" }36000005{/language}\n\n" + "{language data-case=\"title\" }32013003{/language}\n\n\n" + "{include file = \"include/project/text.tpl\" }\n\n\n" + "{language data-case=\"title\" }21000002{/language}\n\n\n" + "{if $content['inner']['pType'] == 1 && $content['inner']['step']['count']['default'] >= 4 || $content['inner']['pType'] == 2 && $content['inner']['step']['count']['offer'] >= 4 }active{/if}\n\n" + "{language data-case=\"title\" }36000005{/language}\n\n" + "{language data-case=\"title\" }32013004{/language}\n\n" + "{language}34012006{/language}\n\n" + "{language data-case=\"title\" }23005003{/language}\n\n" + "{$content.inner.comment}\n\n" + "{language data-case=\"title\" }21000007{/language}\n\n" + "{language data-case=\"title\" }21000001{/language}\n\n" + "{if $content['inner']['pType'] == 1 && $content['inner']['step']['count']['default'] >= 5 || $content['inner']['pType'] == 2 && $content['inner']['step']['count']['offer'] >= 5 || $content['inner']['pType'] == 3 && $content['inner']['step']['count']['software'] >= 4 }active{/if}{language}36000005{/language}\n\n\n\n\n" + "{language data-case=\"title\" }32013005{/language}\n\n\n\n\n" + "{language}34012007{/language}\n\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }23000005{/language}\n\n\n\n\n" + "{language data-case=\"title\" }30000003{/language}\n" + "{foreach $content.inner.sourceLanguage.array as $key => $value }\n" + "{$value}\n" + "{/foreach}\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }23000006{/language}\n\n\n\n\n\n\n\n" + "{if isset($content['inner']['category']['array']) && is_array($content['inner']['category']['array']) && count($content['inner']['category']['array']) > 0}\n" + "{foreach $content.inner.category.array as $key => $value }\n" + "{$value.name}\n" + "{/foreach}\n" + "{/if}\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }23000007{/language}\n\n\n\n" + "{if isset($content['inner']['targetLanguage']['array']) && is_array($content['inner']['targetLanguage']['array']) && count($content['inner']['targetLanguage']['array']) > 0}\n" + "{foreach $content.inner.targetLanguage.array as $key => $value }\n" + "{$value.name}\n" + "{/foreach}\n" + "{/if}\n\n\n\n" + " \n\n\n\n\n\n\n\n\n\n" + "{if isset($content['inner']['projectLanguages']['array']) && is_array($content['inner']['projectLanguages']['array']) && count($content['inner']['projectLanguages']['array']) > 0}\n" + "{foreach $content.inner.projectLanguages.array as $key => $value }\n" + "{$value.name}\n" + "{/foreach}\n" + "{/if}\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }21000001{/language}\n\n\n\n\n\n\n\n" + "{if $content['outer']['status']['visibility'] || $content['outer']['status']['filter'] }\n\n\n" + "{language}36000005{/language}\n\n\n\n\n" + "{language data-case=\"title\" }32013006{/language}\n\n\n\n\n" + "{language}34012008{/language}\n\n\n\n" + "{include file = \"include/project/filter.tpl\" }\n\n\n\n\n\n\n" + "{language data-case=\"title\" }21000007{/language}\n\n\n" + "{language data-case=\"title\" }21000001{/language}\n\n\n\n\n\n" + "{/if}\n\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }32013001{/language}\n\n\n\n\n" + "Toplam kelime sayısı : {if isset($content['inner']['information']['count']['word']) }{$content.inner.information.count.word}{else}-{/if}\n\n\n\n\n\n\n" + " \n\n" + " \n" + "{language data-case=\"title\" }39002002{/language}{language data-case=\"title\" }39002004{/language}\n\n" + "{if isset($content['inner']['summary']['time']) }{$content.inner.summary.time}{else}-{/if}\n\n\n\n\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }39002003{/language}{language data-case=\"title\" }39002005{/language}\n\n" + "{if isset($content['inner']['summary']['amount']['total']) }{$content.inner.summary.amount.total}{else}0{/if} \n\n\n\n\n\n" + "{language data-case=\"title\" }39002006{/language}\n" + "{if isset($content['inner']['summary']['amount']['text']['count']) }{$content.inner.summary.amount.text.count}{else}0{/if}&nbsp;\n\n\n\n\n\n" + "{language data-case=\"title\" }39002007{/language}\n" + "{if isset($content['inner']['summary']['amount']['discount']['count']) }{$content.inner.summary.amount.discount.count}{else}0{/if}&nbsp;\n\n\n\n\n\n" + "{language data-case=\"title\" }39002008{/language}\n" + "{if isset($content['inner']['summary']['amount']['tax']['count']) }{$content.inner.summary.amount.tax.count}{else}0{/if}&nbsp;\n\n\n\n\n\n" + "{language data-case=\"title\" }39002009{/language}\n" + "{if isset($content['inner']['summary']['amount']['gap']['count']) }{$content.inner.summary.amount.gap.count}{else}0{/if}&nbsp;\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }32013002{/language}\n\n\n\n\n" + "{language}39002010{/language} : -\n\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }39002011{/language}\n\n" + "-\n\n\n\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }39002012{/language}\n\n" + "-\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n" + "{if $content['outer']['status']['adress'] }\n\n\n" + "{language}36000005{/language}\n\n\n\n\n" + "{language data-case=\"title\" }32013007{/language}\n\n\n\n" + "{include file = \"include/miscellaneous/adress.tpl\" }\n\n\n" + "{language data-case=\"title\" }21000001{/language}\n\n\n\n" + "{/if}\n\n\n\n\n\n\n" + "{language}36000005{/language}\n\n\n\n\n" + "{language data-case=\"title\" }32013012{/language}\n\n\n\n\n" + "{include file = \"include/project/creditcard.tpl\" }\n\n\n\n\n" + "{language data-case=\"title\" }21000001{/language}\n\n\n\n\n\n\n\n\n\n" + "{if $content['inner']['payment']['status'] && isset($content['inner']['payment']['response']) }\n\n" + "{$content.inner.payment.response}\n\n" + "{/if}\n\n\n\n\n\n\n" + "{language}36000005{/language}\n\n" + "{include file = \"include/miscellaneous/payment.tpl\" }\n\n\n\n\n\n\n\n\n\n\n\n" + "{language}36000005{/language}\n\n\n" + "{language data-case=\"title\" }32013013{/language}\n\n\n\n" + "{$content.inner.message} \n\n\n\n" + "{language data-case=\"title\" }21000034{/language}\n\n\n\n\n\n\n\n\n\n\n\n\n" + "{else}\n\n\n\n\n\n\n\n\n\n\n" + "{language data-case=\"title\" }32013011{/language}\n\n\n" + "{language}34012010{/language}\n\n\n\n\n\n\n\n\n" + "{language data-case=\"first\" data-variable=\"'{$content.inner.fileCount}'\" }39002023{/language}\n" + " {language data-variable=\"'{$content.inner.information.count.word}'\" }39002024{/language}\n\n\n\n\n\n" + "{language data-case=\"first\" }39002006{/language}\n" + "{language data-variable=\"'{$content.inner.projectLanguages.count}'\" }39002026{/language}\n\n\n\n" + "{if $content['inner']['summary']['amount']['text']['status']}\n\n\n" + "{language data-case=\"first\" }39002006{/language}\n" + "{$content.inner.summary.amount.text.count} \n\n\n" + "{/if}\n\n" + "{if $content['inner']['summary']['amount']['discount']['status']}\n\n\n" + "{language data-case=\"first\" }39002007{/language}\n" + "{$content.inner.summary.amount.discount.count} \n\n\n" + "{/if}\n\n" + "{if $content['inner']['summary']['amount']['tax']['status']}\n\n\n" + "{language data-case=\"first\" }39002008{/language}\n" + "{$content.inner.summary.amount.tax.count} \n\n\n" + "{/if}\n\n" + "{if $content['inner']['summary']['amount']['gap']['status']}\n\n\n" + "{language data-case=\"first\" }39002009{/language}\n" + "{$content.inner.summary.amount.gap.count} \n\n\n" + "{/if}\n\n\n\n" + "{language data-case=\"first\" }39002027{/language}\n" + "{$content.inner.summary.amount.total} \n\n\n\n" + "{language data-case=\"title\" }21000020{/language}\n" + "{language data-case=\"title\" }21000021{/language}\n\n\n" + "{/if}\n\n\n\n" + "{include file = \"include/common/footer.long.tpl\" }\n\n\n" + "{include file = \"include/common/foot.tpl\" }"; final Pattern pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE); 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