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
Processing...

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 = "sans-serif; color:black\\\">(.?)"; final String string = "age email\n" + "33 </style></head><body lang=\"EN-IN\"link=\"#0563C1\" vlink=\"#954F72\">. \n" + " <divclass=\"WordSection1\"><p class=\"MsoNormal\"><spanstyle=\"font- \n" + " family:&quot;Calibri&quot;,sans-serif; color:black\">Iam not interested. \n" + " Please unsubscribe me.&nbsp;</span></p><pclass=\"MsoNormal\">\n" + " <spanstyle=\"font-family:&quot;Calibri&quot;,sans-serif;color:black\">&nbsp;\n\n" + "22 </style></head><body lang=\"EN-IN\"link=\"#0563C1\" vlink=\"#954F72\"> \n" + " <divclass=\"WordSection1\"><p class=\"MsoNormal\"><spanstyle=\"font- \n" + " family:&quot;Calibri&quot;,sans-serif;color:black\">Please share company \n" + " details</span></p><divclass=\"MsoNormal\" align=\"center\"style=\"text- \n" + " align:center\"><hr size=\"2\"width=\"98%\" align=\"center\"></div> \n" + " <pclass=\"MsoNormal\">\n\n" + "43 </style></head><body lang=\"EN-IN\"link=\"#0563C1\" vlink=\"#954F72\"> \n" + " <divclass=\"WordSection1\"><p class=\"MsoNormal\"><spanstyle=\"font- \n" + " family:&quot;Calibri&quot;,sans-serif;color:black\">Can you send \n" + " some project info for west region ofIndia</span></p><p class=\"MsoNormal\"> \n" + " <spanstyle=\"font-family:&quot;Calibri&quot;,sans-serif;color:black\">\n\n" + "38 </style></head><bodylang=\"EN-IN\" link=\"#0563C1\"vlink=\"#954F72\"><div \n" + " class=\"WordSection1\"><pclass=\"MsoNormal\"><span style=\"font- \n" + " family:&quot;Calibri&quot;,sans-serif;color:black\">Price of Mono perc</span> \n" + " </p><divclass=\"MsoNormal\" align=\"center\"style=\"text-align:center\"><hr \n" + " size=\"2\"width=\"98%\" align=\"center\"></div><pclass=\"MsoNormal\"><b>"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); 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