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 = "((?:SFR)\\ ?\\d+|(?:[oO][rR])\\ ?\\d+|(?:[iI][pP][hH][oO][nN][eE])\\ ?\\d+|[\\dA-Z]{12}|\\d{2,})"; final String string = "iOS device\n" + "iOS device\n" + "iOS device\n" + "iOS device\n" + "iOS device\n" + "iOS device\n" + "iOS device\n" + "iOS device\n" + "1\n" + "347\n" + "4804\n" + "SFR113\n" + "189\n" + "4429\n" + "4657\n" + "4666\n" + "4790\n" + "8\n" + "Or4177\n" + "Or4195\n" + "Sfr5\n" + "OR4314\n" + "01068\n" + "1140\n" + "21\n" + "228\n" + "229\n" + "253\n" + "40\n" + "421\n" + "4462\n" + "4509\n" + "4650\n" + "4670\n" + "4696\n" + "4705\n" + "4747\n" + "4748\n" + "4751\n" + "4754\n" + "4785\n" + "4818\n" + "55\n" + "880\n" + "93\n" + "OR 1613\n" + "OR4329\n" + "OR4437\n" + "OR4440\n" + "Or4180\n" + "Or4183\n" + "Or4186\n" + "Or4187\n" + "Or4188\n" + "Or4190\n" + "Or4191\n" + "Or4199\n" + "Or4204\n" + "Or4208\n" + "Or4311\n" + "Or716\n" + "Or888\n" + "Sfr2-2\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone 264\n" + "iPhone 335\n" + "F4LLKCCRFNDD\n" + "F78LD2SFFFHM\n" + "0707\n" + "1055\n" + "1122\n" + "1138\n" + "1142\n" + "122\n" + "155\n" + "183\n" + "191\n" + "2\n" + "207\n" + "242\n" + "29\n" + "296\n" + "417\n" + "4427\n" + "4431\n" + "4496\n" + "4503\n" + "4507\n" + "4523\n" + "4524\n" + "4525\n" + "4526\n" + "4529\n" + "4532\n" + "4542\n" + "4543\n" + "457\n" + "4645\n" + "4649\n" + "4651\n" + "4653\n" + "4659\n" + "4660\n" + "4661\n" + "4667\n" + "4675\n" + "4680\n" + "4685\n" + "4690\n" + "4700\n" + "4702\n" + "4703\n" + "4706\n" + "4708\n" + "4709\n" + "4712\n" + "4716\n" + "4717\n" + "4718\n" + "4719\n" + "4745\n" + "4750\n" + "4752\n" + "4756\n" + "4757\n" + "4758\n" + "4761\n" + "4772\n" + "4780\n" + "4783\n" + "4784\n" + "4786\n" + "4795\n" + "4806\n" + "4807\n" + "4812\n" + "4814\n" + "4816\n" + "6\n" + "688\n" + "69\n" + "8\n" + "812\n" + "OR 1842\n" + "OR4309\n" + "OR4315\n" + "OR4328\n" + "OR4595\n" + "OR4635\n" + "Or333i\n" + "Or4182\n" + "Or4198\n" + "Or4646\n" + "Sfr vtc\n" + "Sfr3-3\n" + "Unknown-Host\n" + "iPhone\n" + "iPhone\n" + "iPhone 1234\n" + "iPhone 261\n" + "iPhone 307\n" + "iPhone\n" + "1101\n" + "1257\n" + "128\n" + "226\n" + "254\n" + "279\n" + "4292\n" + "4430\n" + "4460\n" + "4463\n" + "4497\n" + "4499\n" + "4519\n" + "4522\n" + "4527\n" + "4533\n" + "4534\n" + "4537\n" + "4539\n" + "4553\n" + "4643\n" + "4647\n" + "4648\n" + "4652\n" + "4655\n" + "4658\n" + "4665\n" + "4671\n" + "4673\n" + "4674\n" + "4675\n" + "4677\n" + "4677\n" + "4683\n" + "4686\n" + "4689\n" + "4699\n" + "4753\n" + "4759\n" + "4763\n" + "4765\n" + "4767\n" + "4768\n" + "4769\n" + "4770\n" + "4773\n" + "4774\n" + "4775\n" + "4776\n" + "4777\n" + "4778\n" + "4779\n" + "4781\n" + "4782\n" + "4785\n" + "4785\n" + "4789\n" + "4791\n" + "4793\n" + "4794\n" + "4794\n" + "4796\n" + "4799\n" + "4801\n" + "4802\n" + "4803\n" + "4805\n" + "4808\n" + "4809\n" + "4810\n" + "4813\n" + "4815\n" + "4817\n" + "4819\n" + "4820\n" + "4821\n" + "7362\n" + "763\n" + "90\n" + "OR3871\n" + "OR3893\n" + "OR4100\n" + "OR4145\n" + "OR4220\n" + "OR4257\n" + "OR4261\n" + "OR4312\n" + "OR4357\n" + "OR4385\n" + "OR4399\n" + "OR4446\n" + "OR4447\n" + "OR4589\n" + "OR4618\n" + "OR4622\n" + "Or 4412\n" + "Or1262\n" + "Or1338\n" + "Or3927\n" + "Or4278\n" + "SFR1239\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone\n" + "iPhone #24\n" + "Or3600\n" + "0000\n" + "1010\n" + "1013\n" + "1102\n" + "1170\n" + "120\n" + "1203\n" + "1220\n" + "1233\n" + "131\n" + "14\n" + "162\n" + "1980\n" + "202\n" + "206\n" + "280\n" + "318\n" + "326\n" + "4465\n" + "4484\n" + "4495\n" + "4498\n" + "4500\n" + "4511\n" + "4531\n" + "4532\n" + "4535\n" + "4538\n" + "4541\n" + "4654\n" + "4687\n" + "4690\n" + "4691\n" + "4698\n" + "473\n" + "4739\n" + "4746\n" + "4755\n" + "4793\n" + "4800\n" + "4811\n" + "578\n" + "833\n" + "834\n" + "859\n" + "OR 1263\n" + "OR 1309\n" + "OR 1358\n" + "OR 1402\n" + "OR 1403\n" + "OR 1424\n" + "OR 1553\n" + "OR1754\n" + "OR1843\n" + "OR1862\n" + "OR2061"; 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