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

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "(')([a-z])"; final String string = " 'full_name' => 'نام و نام خانوادگی',\n" + " 'mobile' => 'شماره تلفن همراه',\n" + " 'email' => 'ایمیل',\n" + " 'password' => 'رمز عبور',\n" + " 'first_name' => 'نام',\n" + " 'last_name' => 'نام خانوادگی',\n" + " 'father_name' => 'نام پدر',\n" + " 'national_code' => 'کد ملی',\n" + " 'bs_number' => 'شماره شناسنامه',\n" + " 'bs_prefix_alpha' => 'حروف سریال شناسنامه',\n" + " 'bs_prefix_num' => 'اعداد سریال شناسنامه',\n" + " 'bs_serial' => 'شماره سریال شناسنامه',\n" + " 'birthday' => 'تاریخ تولد',\n" + " 'issue_place' => 'محل صدور',\n" + " 'gender' => 'جنسیت',\n" + " 'marital_status' => 'وضعیت تاهل',\n" + " 'postal_code' => 'کد پستی',\n" + " 'home_phone' => 'تلفن منزل',\n" + " 'fax' => 'فکس',\n" + " 'province' => 'استان',\n" + " 'city' => 'شهر',\n" + " 'address' => 'آدرس',\n" + " 'contact_type' => 'نوع آدرس',\n" + " 'country' => 'کشور',\n" + " 'company_name' => 'نام محل کار',\n" + " 'phone' => 'شماره ثابت',\n" + " 'account_type' => 'نوع حساب',\n" + " 'bank' => 'نام بانک',\n" + " 'branch_name' => 'نام شعبه',\n" + " 'branch_code' => 'کد شعبه',\n" + " 'branch_city' => 'شهر محل شعبه',\n" + " 'account_number' => 'شماره حساب',\n" + " 'owner_name' => 'نام دارنده حساب',\n" + " 'iban' => 'شماره شبا',\n" + " 'document_type' => 'نوع مدرک',\n" + " 'file_name' => 'فایل',\n" + " 'trading_code' => 'کد سهامداری',\n" + " 'sejam_code' => 'کد سجام',\n" + " 'old_bs' => 'گزینه شناسنامه نو',\n" + " 'data' => 'داده ها',\n" + " 'user_type' => 'نوع کاربر',"; 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