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

Substitution

Processing...

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 = "\\n"; final String string = "2\n\n" + "18.06.2019\n\n\n" + "Zusatzunterricht\n\n" + "B 109\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "1\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "B 118c\n\n" + "(Herr Harbrecht)\n\n" + "LF9 TBM\n\n" + "1\n\n" + "1\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "FPM 71 TBM\n\n" + "Raumänderung\n\n" + "+B 101 (B 113)\n\n" + "Frau Gottschalk\n\n" + "BW\n\n" + "4\n\n" + "18.06.2019\n\n\n" + "Raumänderung\n\n" + "+B 101 (B 113)\n\n" + "Frau Gottschalk\n\n" + "BW\n\n" + "3\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "FS TET 81\n\n" + "Fällt aus\n\n" + "M H1-2.37\n\n" + "(Herr Kahnke)\n\n" + "LF13\n\n" + "8\n\n" + "8\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "M H1-2.37\n\n" + "(Herr Kahnke)\n\n" + "LF13\n\n" + "7\n\n" + "7\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "IME 61\n\n" + "Auf 18.06. Di 6 verschoben\n\n" + "M H1-3.32\n\n" + "Herr Schmidt\n\n" + "ILF 9\n\n" + "8\n\n" + "8\n\n" + "18.06.2019\n\n\n" + "Auf 18.06. Di 5 verschoben\n\n" + "M H1-3.32\n\n" + "Herr Schmidt\n\n" + "ILF 9\n\n" + "7\n\n" + "7\n\n" + "18.06.2019\n\n\n" + "Von 18.06. Di 8 verschoben\n\n" + "+M H1-3.32 (M H1-3.10)\n\n" + "+Herr Schmidt (Herr Patett)\n\n" + "+ILF 9 (ILF 6)\n\n" + "6\n\n" + "6\n\n" + "18.06.2019\n\n\n" + "Von 18.06. Di 7 verschoben\n\n" + "+M H1-3.32 (M H1-3.10)\n\n" + "+Herr Schmidt (Herr Patett)\n\n" + "+ILF 9 (ILF 6)\n\n" + "5\n\n" + "5\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "ITK 71\n\n" + "Zusatzunterricht\n\n" + "M H1-1.31\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "4\n\n" + "18.06.2019\n\n\n" + "Zusatzunterricht\n\n" + "M H1-1.31\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "3\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "KFM 82\n" + "Fällt ausM H1-1.17(Herr Geilus)LF88818.06.2019\n\n" + "Fällt aus\n\n" + "M H1-1.17\n\n" + "(Herr Geilus)\n\n" + "LF8\n\n" + "7\n\n" + "7\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "M H1-1.17\n\n" + "(Herr Geilus)\n\n" + "LF8\n\n" + "6\n\n" + "6\n\n" + "18.06.2019\n\n\n" + "M H1-1.17\n\n" + "+Herr Lesch (Herr Geilus)\n\n" + "LF5\n\n" + "5\n\n" + "5\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "KOM 71\n\n\n" + "Fällt aus\n\n" + "M H1-1.17\n\n" + "(Herr Geilus)\n\n" + "LF8\n\n" + "8\n\n" + "8\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "M H1-1.30\n\n" + "(Herr Brauckhoff)\n\n" + "LF2\n\n" + "8\n\n" + "8\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "M H1-1.30\n\n" + "(Herr Brauckhoff)\n\n" + "LF2\n\n" + "7\n\n" + "7\n\n" + "18.06.2019\n\n\n" + "Von 19.06. Mi 7 verschoben\n\n" + "+M H1-1.31 (M H1-1.17)\n\n" + "+Herr Rohde (Herr Geilus)\n\n" + "+D (LF4)\n\n" + "4\n\n" + "4\n\n" + "18.06.2019\n\n\n" + "Zusatzunterricht\n\n" + "M H1-1.31\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "4\n\n" + "18.06.2019\n\n\n" + "Von 19.06. Mi 8 verschoben\n\n" + "+M H1-1.31 (M H1-1.17)\n\n" + "+Herr Rohde (Herr Geilus)\n\n" + "+D (LF4)\n\n" + "3\n\n" + "3\n\n" + "18.06.2019\n\n\n" + "Zusatzunterricht\n\n" + "M H1-1.31\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "3\n\n" + "18.06.2019\n\n\n" + "Raumänderung\n\n" + "M H1-1.17\n\n" + "+Herr Dick (Herr Geilus)\n\n" + "LF3\n\n" + "2\n\n" + "2\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "M H1-1.17\n\n" + "(Herr Geilus)\n\n" + "LF3\n\n" + "1\n\n" + "1\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "KOM 82\n\n" + "Zusatzunterricht\n\n" + "B 109\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "2\n\n" + "18.06.2019\n\n\n" + "Zusatzunterricht\n\n" + "B 109\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "1\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "MAL 71\n\n" + "+B 231 (B 310)\n\n" + "+Herr Christochowitz (Frau Schulz)\n\n" + "LF5\n\n" + "4\n\n" + "4\n\n" + "18.06.2019\n\n\n" + "+B 231 (B 310)\n\n" + "+Herr Christochowitz (Frau Schulz)\n\n" + "LF5\n\n" + "3\n\n" + "3\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "B 105\n\n" + "(Frau Nevermann)\n\n" + "D\n\n" + "2\n\n" + "2\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "B 105\n\n" + "(Frau Nevermann)\n\n" + "D\n\n" + "1\n\n" + "1\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "MAL 72\n\n" + "Fällt aus\n\n" + "B 129\n\n" + "(Herr Lehmann)\n\n" + "En\n\n" + "8\n\n" + "8\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "B 129\n\n" + "(Herr Lehmann)\n\n" + "En\n\n" + "7\n\n" + "7\n\n" + "18.06.2019\n\n" + "statt 7./8.\n\n\n" + "B 118c\n\n" + "+Herr Lehmann (Herr Harbrecht)\n\n" + "+En (LF9)\n\n" + "6\n\n" + "6\n\n" + "18.06.2019\n\n" + "statt 7./8.\n\n\n" + "B 118c\n\n" + "+Herr Lehmann (Herr Harbrecht)\n\n" + "+En (LF9)\n\n" + "5\n\n" + "5\n\n" + "18.06.2019\n\n\n" + "+B 301 (B 304)\n\n" + "+Herr Freiheit (Herr Just)\n\n" + "LF8\n\n" + "2\n\n" + "2\n\n" + "18.06.2019\n\n\n" + "+B 301 (B 304)\n\n" + "+Herr Freiheit (Herr Just)\n\n" + "LF8\n\n" + "1\n\n" + "1\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "MAU 71\n" + "MAU 71 und MAU 72 gemeinsam\n\n\n" + "+B 304 (B 118c)\n\n" + "+Herr Just (Herr Harbrecht)\n\n" + "LF9\n\n" + "4\n\n" + "4\n\n" + "18.06.2019\n\n" + "MAU 71 und MAU 72 gemeinsam\n\n\n" + "+B 304 (B 118c)\n\n" + "+Herr Just (Herr Harbrecht)\n\n" + "LF9\n\n" + "3\n\n" + "3\n\n" + "18.06.2019\n\n\n" + "Zusatzunterricht\n\n" + "B 109\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "2\n\n" + "18.06.2019\n\n\n" + "Zusatzunterricht\n\n" + "B 109\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "1\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "MAU 72\n\n\n" + "Fällt aus\n\n" + "M H1-1.13\n\n" + "(Herr Kahnke)\n\n" + "LF4\n\n" + "8\n\n" + "8\n\n" + "18.06.2019\n\n\n" + "Fällt aus\n\n" + "M H1-1.13\n\n" + "(Herr Kahnke)\n\n" + "LF4\n\n" + "7\n\n" + "7\n\n" + "18.06.2019\n\n\n" + "Raumänderung\n\n" + "+M H1-1.42 (M H1-1.43, M H1-1.13)\n\n" + "Frau Wegener\n\n" + "D\n\n" + "6\n\n" + "18.06.2019\n\n\n" + "Raum fehlt\n\n" + "(M H1-1.43), M H1-1.13\n\n" + "Herr Kahnke\n\n" + "LF3\n\n" + "4\n\n" + "18.06.2019\n\n\n" + "Raum fehlt\n\n" + "(M H1-1.43), M H1-1.13\n\n" + "Herr Kahnke\n\n" + "LF3\n\n" + "3\n\n" + "18.06.2019\n\n\n" + "Raum fehlt\n\n" + "(M H1-1.43), M H1-1.13\n\n" + "Herr Ruynat\n\n" + "LF2 z\n\n" + "2\n\n" + "18.06.2019\n\n\n" + "Raum fehlt\n\n" + "(M H1-1.43), M H1-1.13\n\n" + "Herr Ruynat\n\n" + "LF2 z\n\n" + "1\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "SME 83\n\n" + "M H1-2.28\n\n" + "+Herr Eisak (Herr Barz)\n\n" + "ET\n\n" + "6\n\n" + "6\n\n" + "18.06.2019\n\n\n" + "M H1-2.28\n\n" + "+Herr Eisak (Herr Barz)\n\n" + "ET\n\n" + "5\n\n" + "5\n\n" + "18.06.2019\n\n\n" + "+Herr Lübcke (Herr Barz)\n\n" + "ET\n\n" + "4\n\n" + "4\n\n" + "18.06.2019\n\n\n" + "+Herr Lübcke (Herr Barz)\n\n" + "ET\n\n" + "3\n\n" + "3\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "WER 61\n\n" + "+B 118c (B 310)\n\n" + "+Herr Peters (Frau Schulz)\n\n" + "FT\n\n" + "8\n\n" + "8\n\n" + "18.06.2019\n\n\n" + "+B 118c (B 310)\n\n" + "+Herr Peters (Frau Schulz)\n\n" + "FT\n\n" + "7\n\n" + "7\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "WER 71 2HJ\n\n" + "Zusatzunterricht\n\n" + "B 109\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "2\n\n" + "18.06.2019\n\n\n" + "Zusatzunterricht\n\n" + "B 109\n\n" + "Frau Istrati\n\n" + "DaZ\n\n" + "1\n\n" + "18.06.2019\n\n" + "Info\n\n" + "Art\n\n" + "Raum\n\n" + "Lehrer Name\n\n" + "Fach\n\n" + "Pos\n\n" + "Datum\n\n" + "Di 18.06.2019\n" + "ZIM 72"; final String subst = " "; final Pattern pattern = Pattern.compile(regex); 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