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

/
/
g

Test String

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 = "(?=(.*?\\d){9,})(((((((00|\\+)[0-9]{1,3}[ \\-/]?)|0)[ ]?[1-9][0-9]{1,4})[ ]?[\\-/]?[ ]?)|((((00|\\+)[0-9]{1,3}[ ]?\\()|\\(0)(\\)|[ ]?[1-9][0-9]{1,4}\\))[ ]?[\\-/]?[ ]?))[0-9]{1,7}([ \\-/]?[0-9]{1,5}){0,4})"; final String string = "+33 (33) 3)44444444444 //the found string has only 5 digits, but it shouldn't be found because of (?=(.*?\\d){9,})\n" + "+49123123123 //how can I exclude that, because there is no white space in the middle\n\n\n\n\n\n\n" + "// this is the part where I test all the other phone numbers, if you are interested in:\n\n" + "//it should match these phone numbers:\n" + "testword +49 30 12345-67 testword \n" + "testword+49 (0)30 12345-67\n" + "(0)30 12345-67\n" + "(0)30 123 234\n" + "(0123)30 12345-67\n" + "test (021)30 123 234\n" + "s030 12345-67 dsd\n" + "(030) 12345 55 99testword \n" + "testword (030) 12345 44\n" + "0351 4640-123\n" + "09623 12 3 33\n" + "09234 1233\n" + "+49 123 1 2 12 31\n" + "0049 2123 1231\n" + "+1 3519 1231\n" + "0 30 / 12 34 56\n" + "0 30 / 12 34 56\n" + "030 / 12 34 56\n" + "0123 / 12312 123\n" + "testword 0178 1232231\n" + "+490 178 1232231\n" + "testword +36 (351)4740-991 testword\n" + "testword +36(351) 4740-991 testword\n" + "09623 12333 testword\n\n" + "should NOT match (with the reason why it shouldn't match):\n" + "+49123123123 //because there is no white space\n" + "01781232231 //because there is no white space\n" + "123456 //because it doesn't have at least 9 digits and no white space\n" + "123.123 //because it has a dot\n" + "12-12-12 //because there is no white space and there is more than one dash\n" + "12-12 -12-12-12 //because there is more than one dash\n" + "1990 - 2000 //because it doesn't have at least 9 digits\n" + "1990-2000 //because it doesn't have at least 9 digits and no white space\n" + "1990-91 //because it doesn't have at least 9 digits and no white space\n" + "123 //because it doesn't have at least 9 digits and no white space\n" + "+36 (351) 47(40-991 //because it has more than one left bracket\n" + "+36 (33) 3)4444\n" + ")40-991 //because it has more than one right bracket\n" + "+23+234 +2346 // because it has more than one plus sign\n" + "234 234 234 234 234 // because it has more than one white space in a row\n" + "123 123123 // because it has more than one white space in a row\n" + "01712123123\n" + "01234"; final Pattern pattern = Pattern.compile(regex); 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