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

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 = "\\s+top=\"\\d{1,}\".*><b>'.$enDayNames.'\\s+\\D+<\\/b>"; final String string = " top=\"241\" left=\"79\" width=\"105\" height=\"7\" font=\"3\">InnerSpace - InnerSpace: Top </text>\n" + " top=\"250\" left=\"79\" width=\"97\" height=\"7\" font=\"3\">25 Sexy Sci-Fi Stars 2015 (0)</text>\n" + " top=\"259\" left=\"79\" width=\"27\" height=\"7\" font=\"3\">HD CC[]</text>\n" + " top=\"268\" left=\"79\" width=\"27\" height=\"7\" font=\"3\">EXEMPT</text>\n" + " top=\"286\" left=\"79\" width=\"95\" height=\"10\" font=\"4\">InnerSpace - - (208)</text>\n" + " top=\"299\" left=\"79\" width=\"38\" height=\"10\" font=\"4\">HD CC[]</text>\n" + " top=\"311\" left=\"79\" width=\"38\" height=\"10\" font=\"4\">EXEMPT</text>\n" + " top=\"331\" left=\"80\" width=\"85\" height=\"12\" font=\"2\">Being Human - </text>\n" + " top=\"345\" left=\"80\" width=\"85\" height=\"12\" font=\"2\">Cheater of The </text>\n" + " top=\"359\" left=\"80\" width=\"44\" height=\"12\" font=\"2\">Pack (6)</text>\n" + " top=\"374\" left=\"80\" width=\"63\" height=\"12\" font=\"2\">HD CC DV[]</text>\n" + " top=\"388\" left=\"80\" width=\"22\" height=\"12\" font=\"2\">14+</text>\n" + " top=\"419\" left=\"80\" width=\"107\" height=\"12\" font=\"2\">Star Trek: Voyager </text>\n" + " top=\"434\" left=\"80\" width=\"103\" height=\"12\" font=\"2\">- Flesh And Blood, </text>\n" + "<text top=\"90\" left=\"386\" width=\"166\" height=\"11\" font=\"1\"><b>03-AUG-2015 to 09-AUG-2015</b></text>\n" + "<text top=\"152\" left=\"37\" width=\"31\" height=\"11\" font=\"1\"><b>06:00</b></text>\n" + "<text top=\"240\" left=\"37\" width=\"31\" height=\"11\" font=\"1\"><b>07:00</b></text>\n" + "<text top=\"329\" left=\"37\" width=\"31\" height=\"11\" font=\"1\"><b>08:00</b></text>\n" + "<text top=\"115\" left=\"108\" width=\"63\" height=\"13\" font=\"0\"><b>Monday </b></text>\n" + "<text top=\"131\" left=\"111\" width=\"45\" height=\"13\" font=\"0\"><b>Aug 03</b></text>\n" + "<text top=\"76\" left=\"449\" width=\"41\" height=\"11\" font=\"1\"><b>SPACE</b></text>\n" + "<text top=\"117\" left=\"324\" width=\"67\" height=\"11\" font=\"1\"><b>Wednesday</b></text>\n" + "<text top=\"131\" left=\"337\" width=\"40\" height=\"11\" font=\"1\"><b>Aug 05</b></text>\n" + "<text top=\"115\" left=\"439\" width=\"65\" height=\"13\" font=\"0\"><b>Thursday </b></text>\n" + "<text top=\"131\" left=\"447\" width=\"45\" height=\"13\" font=\"0\"><b>Aug 06</b></text>\n" + "<text top=\"115\" left=\"561\" width=\"52\" height=\"13\" font=\"0\"><b>Friday </b></text>\n" + "<text top=\"131\" left=\"558\" width=\"45\" height=\"13\" font=\"0\"><b>Aug 07</b></text>\n" + "<text top=\"115\" left=\"664\" width=\"62\" height=\"13\" font=\"0\"><b>Saturday </b></text>\n" + "<text top=\"131\" left=\"670\" width=\"45\" height=\"13\" font=\"0\"><b>Aug 08</b></text>\n" + "<text top=\"115\" left=\"780\" width=\"60\" height=\"13\" font=\"0\"><b>Sunday </b></text>\n" + "<text top=\"131\" left=\"782\" width=\"45\" height=\"13\" font=\"0\"><b>Aug 09</b></text>"; 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