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

/
/
gmi

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 = "(.*?)((?>globalis|transnat|facili|container|LIC|trad|TNC).+?)\\s+(.*?)"; final String string = "- Freedom of trade\n" + " - The World Trade Organisation (WTO) is allowing free trade between all countries.\n" + " - This causes globalisation because allowing freedom of trade means anyone can trade with anyone and get better access to ores & minerals. \n" + "---\n" + "- Containerisation\n" + " - Containerisation is when products are put in big boxes to be transported all around the world.\n" + " - It causes globalisation because it made it easy & cheap transport things overseas.\n" + " - Lots of things were modified to fit the new containers and make it the industry standard.\n" + "---\n" + "- Locating outside of home countries\n" + " - Companies (e.g. IKEA) are building market, outside of where they were originally located\n" + " - Locating in foreign countries can allow companies to take advantage of local suppliers and local materials.\n" + " - IKEA was founded in Sweden but now sells in 38 countries like Iceland, Kuwait and Malaysia.\n" + "---\n" + "- Improvements of communications\n" + " - The internet and mobile phones give people more access to communication outside of their country.\n" + "---\n" + "- Cheap Labour\n" + " - In countries like India, China and Brazil, labour costs are much lower."; final String subst = "$1 ==$2== $3"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.CASE_INSENSITIVE); 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