Regular Expressions 101

Save & Manage Regex

  • Current Version: 1
  • Save & Share
  • Community Library

Flavor

  • PCRE2 (PHP)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java
  • .NET 7.0 (C#)
  • Rust
  • PCRE (Legacy)
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests
Sponsors
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

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 = "^"; final String string = "0gXFABYYJ4w\n" + "9SbT3q1a6dQ\n" + "Px9m5hkr4R0\n" + "si65inj9DTQ\n" + "Bi5kyehmeaY\n" + "RRKBuSYVjcg\n" + "Vus1JBAwPz4\n" + "J6dl8Gicvv0\n" + "9OpVlBDOXYI\n" + "MWERAZARYMw\n" + "36EBd2Q4-gg\n" + "R3nDIZ1XE8Y\n" + "nH3a-wwkkkU\n" + "WdlyIH2DX60\n" + "VTSHzCZ-xss\n" + "HBZctpwwPbA\n" + "rxbCaiyYSXM\n" + "2YHV9ikQ8fM\n" + "pm8JXbh-Nc4\n" + "GVgfAfj4Eig\n" + "TnbSasaBnZ8\n" + "jhufM4oeBqE\n" + "xEd1WsRKikw\n" + "qAHTwM5QvHY\n" + "s1ATTIQrmIQ\n" + "OnrEnWG99RA\n" + "k-AvkeMrybI\n" + "scMv18TrCv0\n" + "dZ20GnK2qy4\n" + "dRX1Qc1BUz8\n" + "xWl5NcRB8UI\n" + "_DIYqQnJNZE\n" + "8jK0yIEUpxg\n" + "f81PzYbCkEE\n" + "uWqnCCGe4lU\n" + "80Uz2iP1FCI\n" + "e7I9uSqjxIU\n" + "S-EPItXKHn8\n" + "CvQY0J4UAPc\n" + "h8gkUsjjusU\n" + "Pu8myhboOv4\n" + "9FMZfTJKmyM\n" + "dySPsLzD8AI\n" + "DuMDzczLoXY\n" + "ZtgLSzoFUMM\n" + "72KC8xMmERU\n" + "vup1zS44HtM\n" + "4k7dEJVFKYM\n" + "jS1wmaNVGts\n" + "toyaz8OgKlA\n" + "zyJP3Cckw24\n" + "Ou0evRc1Deg\n" + "ttVCIx5xvMQ\n" + "tBfWb5IrbOI\n" + "l0S05wu6WKk\n" + "ZOZD6Oe0Inc\n" + "VJit1m74YfQ\n" + "pnS1JZcAw68\n" + " -IRbsYNBBFQ\n" + "68ZFFoToojU\n" + "gVHCYIdbLg4\n" + "YYZz8BXN7ag\n" + "1HSQO4wRiU8\n" + "0gOX4W2PNGM\n" + "BA5pmLE-fMk\n" + "oig3Mqg7rzs\n" + "NR23z1sm6JA\n" + "Cw8081tNzZA\n" + "0lH8_5ORDsM\n" + "Uu9wrx3_1A4\n" + "Ag9r0BavajU\n" + "si9-L-8clOE\n" + "hCcQG8EGB5M\n" + "snwUE9XkmXg\n" + "2_eudldBr9U\n" + "vgOTxZtlXys\n" + "mmK71ZfaZO4\n" + "K5Vm_592_3g\n" + "UgLEeINmXBk\n" + "PWdM8XJ7ets\n" + "f4GL62UTcdQ\n" + "CvUhGKhvfrI\n" + "46JmTj5JEVI\n" + "NPiAK33CfxQ\n" + "zgZ52M4a_R0\n" + "2l4GAPu36fA\n" + "I6UQukiQbnk\n" + "p0zIbYCu7Yc\n" + "rOjbXSry87w\n" + "67vr-3kpX3Q\n" + "JocAXINz-YE\n" + "B-RyOg1yt48\n" + "9tbRaEHFhh8\n" + "tfa7lLEMZDA\n" + "6glk4oMbgKE\n" + "1JTndrLHHt8\n" + "PidI5ZVgpx8\n" + "5pErjN8l2c4\n" + "scogMj8GjOo\n" + "QIuIdZ_L4iY\n" + "ufWIQbb2-qg\n" + "csY_i30TbsM\n" + "cV77lUcEvyE\n" + "9gpvus-fPyo\n" + "zz3U9xMQvOo\n" + "6tLjsVu917A\n" + " -WUfUald0-U\n" + "rm4vsbU7KDo\n" + "BnBNJo1Lqrc\n" + "Im6SCddgBiA\n" + "OgQ2ecwZodU\n" + "oKsYe4Lbfao\n" + "do47TMppVcw\n" + "4L56cDBpGAg\n" + "jGh08mM7NZE\n" + "uxYmRvULqqc\n" + "GlcT6eN7fWk\n" + "D27Bf2oQdP8\n" + "9-Y4Nb8lvjU\n" + "qLdPs7e3sq8\n" + "CClxaRJ0zfU\n" + "TW8zIUb0Pes\n" + "ZBPV27IE6-Q\n" + "CSLztmp1pMk\n" + "yhYK7Mrp8DM\n" + "0ymCdRe2y0c\n" + "LYa5q2AjWNQ\n" + "m9LQBc_sR9Y\n" + " -FQ9i737-Vk\n" + "5F2R0FjzRaI\n" + "m-BEAKGllM0\n" + "q06FRYlAZeg\n" + "DddW7_tLOXc\n" + "H413p-5LaIY\n" + "9p0pqng6xTg\n" + "2jpGJHvWNGE\n" + "qyLL__QinB0\n" + "MSVbHDb35kM\n" + "fXLzyVghHDs\n" + "HInIGGXhJHs\n" + "rOHTCzwsg1s\n" + "nwuNWRxd2SA\n" + "Kr4EQDVETuA\n" + "MXNDVJix94Y\n" + "iyGK6S4gCuk\n" + "4OdCNJ2pA1M\n" + "v_mpRUw_JDk\n" + "fHmmS8J0CNI\n" + "J7p4bzqLvCw\n" + "FR9FAH1wnx8\n" + "2f6Kg4l8P6s\n" + "NKFWojBa9vw\n" + "6-OjwC1pTPE\n" + "1xfFVBzceoY\n" + "7jTRZF7XoJg\n" + "pJi5VwKin_I\n" + "Nk-ZGhs8Ntk\n" + "8dMuOnST7Yo\n" + "OPG9VKXbdFM\n" + "9ScC8HAhnBk\n" + "1cgPtmLRAsM\n" + "gqpdZ34sVAw\n" + "UhZbOQYj4oM\n" + "5fAy2qbzLlw\n" + "6xelOXDPqOU\n" + "SpOd2ZkkGzg\n" + "69cgop62oZU\n" + "DnEOoCWqY9M\n" + "6JUGglBsczQ\n" + "WKB9bIz5T_M\n" + "6LjdJgTSIRo\n" + "o08YscncCTc\n" + "6yARlD8ES6U\n" + "wxi66Wm0XQw\n" + "v8nbdnSpQX4\n" + "uJPxcv5veNU\n" + "ukTKLdpITVU\n" + "BdI7r2Fjiys\n" + "JR8qHvqBkYo\n" + "6_E3VzxtRMc\n" + "fM2Z2et00ww\n" + "puBNNKp3m7A\n" + "0EyeuEmMBl4\n" + "6D6eXGRAbHo\n" + "Oe456lW5Nek\n" + "9R7FEhpqU3s\n" + "LtJc2QbM_pQ\n" + "Qnwo6NtLe30\n" + "g-LJaQKnpug\n" + "hAxeU0gtDkY\n" + "sQq7vjCt1Mo\n" + "CIyWAkFnX3U\n" + "GIbyKYv7hKk\n" + "AWv0MuSRll4\n" + "bMTI_t0CKE0\n" + "58SZRooWqqw\n" + "oH03ruYF8p0\n" + "lxhCRI8OeZw\n" + "fQ-hYPUspaI\n" + "P-6y9EsTMBk\n" + "0z0dZhIIC50\n" + "oMzM3PmYP04\n" + "WV9axjWCAUY\n" + "XmN4pI0oD88\n" + "QPXC4WShltM\n" + "IX_RjAxYyXA\n" + "Mz1vZKKBkK4\n" + "u765IT19u7Y\n" + "Zxnnuj4Vp_g\n" + "L6wWO3qoGQg\n" + "-7HMCgJpXjM\n" + "1Oe06936C0c\n" + " -PU9GA9VLTw\n" + "sd-dK8OqtVU\n" + "EmU7_cHfmxQ\n" + "UeYYwUhwGxc\n" + "2kpgKmDgw5Y\n" + "UCHLxIN0_ag\n" + "FetujvIrAUY\n" + "z1_BHJpbcsc\n" + "jR7qi2Q1xLc\n" + "gvrVXKAUhSQ\n" + "dz4e2TfJ86U\n" + "vBtvhPM2GHc\n" + "ULSKXyITnrg\n" + "j5F4tPhtsdA\n" + "I0o1rgVsd18\n" + "pj4UebFCeoY\n" + "jb5R5pe68bo\n" + "HnHvacpkG0g\n" + "5NFL2uV7kps\n" + "1aWflmFDres\n" + "LfKvGCFmBuM\n" + "MgIBoRIBQD0\n" + "lHl9-CcDD1s\n" + "bO3XsqJ-xo4\n" + "286OjxGt_Yc\n" + "3J4F0mWitrA\n" + " -rSKujuF0f4\n" + "jj-_1kvwO4o\n" + "Yl-Z9DOqluc\n" + "canQwTAoxIw\n" + "s7yvqysENYY\n" + "AY7H2sNBVZI\n" + "QTa6m_lW2R8\n" + "Bf-eRpMS2Q4\n" + "GcVKnErkbSQ\n" + "Lh-rolwcCGI\n" + "eM0l6zfnpO8\n" + "dLBrhd1yqN4\n" + "VOjh0kgbMMk\n" + "Mxar_gA2buw\n" + "SDl9a5Vsb_0\n" + "7r9roPVhwE8\n" + " -tfues1Cdgc\n" + "jZA0IdOo6U8\n" + "TVHA6o30yBA\n" + "bEdz42UN0Uk\n" + "GF3xmR7YJ0E\n" + "HAOebnPiHS4\n" + "zui80NELT14\n" + "gJAy42ccp0w\n" + "y-W-Gbo0uMY\n" + "uyZIC3jSDD0\n" + "9VsLNuHU3Bw\n" + "VDTKMKo-Cro\n" + "Fb3j_yuFh1s\n" + "VnVCXegWlLc\n" + "cwfzyzuKp5o\n" + "0Sx25mlo8wk\n" + "Q7nj1gfQiio\n" + "DMIj56k484Y\n" + "FEuYZENFZbs\n" + "HTd3l-_Zkw0\n" + "8D9sCWsKlRM\n" + "3Uoe8W649pw\n" + "y_16OUXA6D8\n" + "wXm07jdyT2Y\n" + "OHXYPeuR4Zk\n" + "1sJhn_3oZdU\n" + "xE5k9iMi8K4\n" + "TGd2MwWGpXY\n" + "PJqou7PFTk0\n" + "2fBlfEmgrwI\n" + "7BM7fL86vng\n" + "_8I4Dki8KC4\n" + "DbyjnjgN9Ao\n" + "miZ5SQYCqxU\n" + "FHAnyIbgIvo\n" + "EZxk94ch2Yk\n" + "pWI0Hi8q1II\n" + "r4A0YC74Zxc\n" + "pE0-mVGFIOc\n" + "fI8eIOCerZw\n" + "_MGo4X68xJA\n" + "2uBNeUw9_gI\n" + "2hpwXvW7jbk\n" + "MELuq9C6X0w\n" + "sc-sc9ewn14\n" + "mbOATjUKm_k\n" + "R9I_BS8l6aE\n" + "ipsvXDL-fOo\n" + "tcERO0i7W_Q\n" + "e-NAfJsHGk8\n" + "fAqa1ozCuj8\n" + "Gifk8x7ZHVE\n" + "rx2NAFpSdik\n" + "ZYjdYiLRkwY\n" + "4xtwjLqdaj0\n" + "H3UIHZshNQ0\n" + "drsGou-Ztt8\n" + "c0GRgiD_EYM\n" + "YhX_Woa3kVA\n" + "FHKi7DvRcrk\n" + "oixiJSJ7kkU\n" + "YqAt8-QiBcI\n" + "k77mGsNRfs0\n" + "Ct0gHrlttD0\n" + "9ndjjAdbWlo\n" + "LWN0vQpwcKM\n" + "2nR1zrNzgcY\n" + "P_X6JCMVMQ8\n" + "jdbQYDkNjfk\n" + "OWomJZ-rRyw\n" + "zP7x-H_KV4k\n" + "I4P5RR4jPGg\n" + "BZm_U5YVwVY\n" + "MBcF8cQWcTs\n" + "Gz_HEtzYT1o\n" + "Szvnvhr8uvc\n" + "iD87Aaw3vBM\n" + "OX3ecjN0d74\n" + "ZAz3rnLGthg\n" + "k4V8E5VOMzQ\n" + "mm58yEynJyw\n" + "FiqoZyauhdA\n" + "BkSSOGNeWTM\n" + "1MegNXLMUIg\n" + "Kyiy2NvSdFs\n" + "RdCepOB4BV8\n" + "cZCm_i6YvAk\n" + "hI_uipQ64hQ\n" + "3OTPs0qSJPc\n" + "AhyRTEGuToE\n" + "eXrmLd5mer4\n" + "fzI2PIZJ0vc\n" + "1RiYTzdHSDk\n" + "RFAG4-iX7Sc\n" + "DEQSiNw829g\n" + "qslNFQ2CeZY\n" + "CikjiSG8eRM\n" + "qhvnEfrYzNI\n" + "Xrux8DrMsmE\n" + " -LAG4abuCAM\n" + "pf3mEgXl-mE\n" + "u7HqYLVjZUs\n" + "-5qqrMu_AZc\n" + "73DYB0n8dvE\n" + "bHwpmAuIxAU\n" + "jZnAUNgcGE4\n" + "2_vBJvf5NXk\n" + "3BjGGnrEMZw\n" + "9fDHrKyV-r8\n" + "qR-jjaCGpOU\n" + "hGiAwQgRWfw\n" + "uxqogWipnNM\n" + "Tr_AcfquqpE\n" + "CFkPp0NhK_s\n" + "v1aL0W5W6tE\n" + "5UtqA0l88X4\n" + "oOEwt6KIW_U\n" + "m9Fbp02qBcw\n" + "5oBC5gjrWpM\n" + "PErbSeBCjdY\n" + "tXqtQdGo_pU\n" + "GWDODnFZDRs\n" + "yZwcjEBAdPU\n" + "YweS8BjdbF8\n" + "VZuU_1cLcOM\n" + "w2b7dsrzPCQ\n" + "t5FnmChlOhM\n" + "dxkohu0iZPk\n" + "raZ03s1rzd0\n" + "9UqiMCqJi-Y\n" + "XqgIkH-CuqI\n" + "sN-X_03sp-M\n" + "lSVwd0-hK14\n" + "lbkuNzshvp8\n" + "eSis2i7Gx9g\n" + "vNZhzy8D8ak\n" + "znKlOTltl3g\n" + "b39UUughbuA\n" + "VRhCzJPP_5w\n" + "x5Cky-cOya0\n" + "r3K2buWuVS0\n" + " -Xr4xUHDP6U\n" + "rpLCx-fkEX0\n" + "eYfXk_it8qU\n" + "kS_NQ7Y5TE8\n" + "hwwns39p0zk\n" + "l4523ZQQGI8\n" + "YYbUnoNLhIs\n" + "_jGCL0CkXow\n" + "07CQf35Kt4g\n" + "uFcQ-OB7cQc\n" + "UJj7EgN8aus\n" + "Xxd6OY0IQYU\n" + "X2wPS6sE6DU\n" + "_eb0lRcLJI8\n" + "cbnklGwTFwg\n" + "H_WN-xTp7oU\n" + "tbulbPsysaM\n" + "s3-WyRrBB2k\n" + "BeuKg_3CCOc\n" + "z084LuYa0JY\n" + "fkrYH6Ll984\n" + "1NCZdkDzphA\n" + "65O3aUt9pDM\n" + "YoGK3tyQsMM\n" + "iGZKk-Npg20\n" + "5xDwo3YQxQE\n" + "Gs5WlUzk_Ec\n" + "IC5VqwM8pp8\n" + "ugD3_yt756w\n" + "xd0a5rYkRD8\n" + "T6RemEBosZ0\n" + "fnY3gXSQofU\n" + "1KMsRBd_CVE\n" + "URJLtHuwmgk\n" + "MqQ9mtY-JmI\n" + "qG5XQkU4Yb4\n" + "FndvOhMegm0\n" + "rCSMJ_n07Ds\n" + "XjV3JwwpYSo\n" + "cXXWGAq1BXk\n" + "xIQpLlYC8xA\n" + "czpaYKnxqaM\n" + "DSQ_qY-j_50\n" + "eSDzbrhcZpg\n" + "y8kEiL81_R4\n" + " -VqRYD4qPmI\n" + "H4RELGc9su8\n" + "cyywp0uR0Do\n" + "oWsRa6PxMS0\n" + "nTxI91twGqE\n" + "k1qpgQr8wXk\n" + "0DzzzRak5dE\n" + "V1yoiDhB9ZI\n" + "I1eu3YgJ9ro\n" + "R63qeX3cbhU\n" + "mGyONBxShYo\n" + "_ZRJrAHprBM\n" + "rC9gTAef0P4\n" + "jVBsM8CM0AE\n" + "fW8NQgqYoVQ\n" + "FLx99uSYDk0\n" + "bAu7g4Hoxlg\n" + " -T5jjfZtP5g\n" + "MxEjnYdfLXU\n" + "mEjkui-Cd_E\n" + "BDGFLPZvGHI\n" + "VxGEUNm_A5k\n" + "AFQnRwMDo1I\n" + "LBQWAbYihck\n" + "0CxacijBc8s\n" + "qlP7_oriLvM\n" + "jF1dHUUYlbs\n" + "MWXzYBrUvMU\n" + "fTri9q7YW74\n" + "SYJ6OxyHnsY\n" + "fLMB6-AHTXI\n" + "_VXUiAJi5KY\n" + "HKvw-jx3ma0\n" + "bm5vtVwF5vk\n" + "KtOjdLW3buI\n" + "ZJO6sdr9SOI\n" + "Keg31bCrXYg\n" + "SyLi8yjIHP4\n" + "5i5r1wkqTHM\n" + "eEYO0rKL6vk\n" + " -_JMfiRkdqU\n" + "lWg6AKVS0Zo\n" + "yUu4SikxUis\n" + "q7V-C_fwZKg\n" + "fPMsBHWoBsU\n" + "RSxB8mPq9t0\n" + " -xZol2WbqrU\n" + "IUfRBnzWUw0\n" + "v_MZfpnCAYo\n" + "iP0tHmoc1rs\n" + "PWVNzYMyLTY\n" + "Cj9fh-2ORDg\n" + "57aB8mkPO4g\n" + "3nlUDyAVFQk\n" + "3d17kzryqqM\n" + "Lk7tMF5pTSw\n" + "aaRU-4uksg0\n" + "qAZQFgnuwGo\n" + "MCXQzX5H7SE\n" + "7sRgsaA9H0M\n" + "zA7qnI7iId4\n" + "1YFNOrvUHRg\n" + "Ml9TSNW5Ey4\n" + "UQNebFZnEQQ\n" + "Vy0fFC4CIjI\n" + "04o00DJ3Y5w\n" + "YeS3PDfUeqM\n" + "P3VFJ4jgswY\n" + "BZAeyc0T_IY\n" + "k5jZP7NY0Ro\n" + " -IutkjlQW60\n" + "lBgeanW5Qhg\n" + "Dg9ew2-VGJQ\n" + "mRYSZQqvuus\n" + "hu31Gv68_qg\n" + "V8Fe6x0fUtU\n" + "g0NVaX8DRN4\n" + "0XqPpZeW2BY\n" + "S5NbBMbPhMw\n" + "MfnWQiScDIk\n" + "UheJQ_NDKic\n" + "U3FV1lBhpA8\n" + "UQQpYNc9ibg\n" + "tE4MDJHJtVU\n" + "fhSTzRnByxs\n" + "yAMxx2PSw2A\n" + "B56iftyjS3U\n" + "P6qoTPhhv9w\n" + "cUWLGSPXPRs\n" + "bvNr5-CXV60\n" + "fBk_Aawlbsg\n" + "h19zt9JHDm4\n" + "uCIsOh1bggE\n" + "BLU_zf3fpNM\n" + "w1ScwAjAYow\n" + "LwaIy4gP6hA\n" + "eHxVq-8RhKg\n" + "32pInRftwCo\n" + "1QzJi58c1Xw\n" + "tnVAEAo7nvA\n" + "Q0FdXIYxLbE\n" + "cGc6T8X_vZk\n" + "Q8_ibpJIvGw\n" + "GPoeyB3LK8o\n" + "Ct32AqbvS_Y\n" + "cC0cVqlb6SE\n" + "GkHaAnbpAfw\n" + "Rr1Cdli5nE8\n" + "jofDfEI2m_o\n" + "c9_sYDn0JTA\n" + "MwjEV-LtdMM\n" + "19zExVchWNw\n" + "1qDqPYvPWIo\n" + "qpmbfSvtWeI\n" + "nj3UwgSE-X0\n" + "iG9QNTfGVBM\n" + "krZfvUPIVoQ\n" + "JPivtCA59fE\n" + "KTzYsyS5S88\n" + "Nfs9PyTnSu4\n" + "gTUoQpDqcWY\n" + "qZq56xfSqLc\n" + "aOGDdq6Jw2E\n" + "7eAG6BB7vUU\n" + "BtI7uZMfeZI\n" + "uhM1TuhmKoI\n" + "Kg5p-mSUO6s\n" + "9bXgolwlaWE\n" + "GY2tNKSVHzI\n" + "GUjyH7tThcE\n" + " -yb4WxgNqTA\n" + "E3F4qkfQeFY\n" + "ZRhE_dgnY7k\n" + "ha0jtsdIP24\n" + "pV2NTIbTw2Y\n" + "_KwItIiO8aQ\n" + "7e-0ZWqMtWg\n" + "53jx17KvusI\n" + "DGybYzBVXL0\n" + "Byzhrg7oW58\n" + "iV93hXBZinw\n" + "VlD6Iku3jzI\n" + "zYvAaYkhETY\n" + "yx3cw_i3IK4\n" + "AWEjFX3yO-4\n" + "zhil91dFxQ4\n" + "fBVAXhbVwhc\n" + "e4GT-FH3jZQ\n" + "olf4IO9Dx4E\n" + "PUUDWVhxZ4I\n" + "AfPVYeVTMS4\n" + "2mkE8PYK6Ls\n" + "o7KGsgvjZrM\n" + "J_tchksaJCM\n" + "JNjfoxgegrU\n" + "5xlLt4k1lXA\n" + "TTf5aWtyEa4\n" + "UvdL2eTdXAU\n" + "iSMp-sgL5y8\n" + "1N93huLYH9g\n" + "m6EgJFlT7eA\n" + "nHz5expH6BQ\n" + "0zcKiBCQ5dY\n" + "dr8kFKEowh0\n" + "UOLEEkYO4MA\n" + "FEIBQt51pu8\n" + "eTMRvWNfAd0\n" + "DV7biH2ZNj4\n" + "w1GBTgxIvcY\n" + "g2gRpFLEZJg\n" + "9wHeei2PGcs\n" + "GGwUL-LAYJo\n" + "BMgQ2kMr1I4\n" + "HGhLOOz_lyI\n" + "Ojg3GoZs4kg\n" + "-3vePS_m1hg\n" + "fvUfA20fyZQ\n" + "VfyewZElFG8\n" + "sApmCzCOWAE\n" + "83Subiavtxc\n" + "pmQ5Xpw95Jc\n" + "zf2k9_Nnm7w\n" + "1mJa0KyukzU\n" + "w3eE3vwXUYE\n" + "teZMWgfeyk8\n" + "54z605hXwFI\n" + "Pf7XsWXrRA0\n" + "JBsBG-yIFZI\n" + "7QYq1r5gQD4\n" + "q1akFrXlIEo\n" + "wu5iTLf7miY\n" + "45DocMnUVbw\n" + "U9ulY90Wy8Y\n" + "wp8duWcB_SE\n" + "4NDSOSDfDAo\n" + "trozv3g7dEc\n" + "HWDn8Lzz6_I\n" + "jX4wKVIC4Wk\n" + "fhCkGKiP95I\n" + "mLlwp1aB8Eo\n" + "nj71ZP4lG2o\n" + "H3wUhwhPXO8\n" + "Ba2GJF8ZNIE\n" + "UHnjSTQtdFI\n" + "YNHBAX1AqBk\n" + "7YHlKmkRsDQ\n" + "uevXz_O_uOI\n" + "6ylTbWMxO7s\n" + "8hRk8B6foOE\n" + "622RDV68iyk\n" + "GK3ByfKfw_w\n" + "4ZX2dn2tujM\n" + "h83Kk4fVsjA\n" + "80a2ptPoVjE\n" + "HgqLVUhT0k0\n" + "Wf02V8AtMag\n" + "5L7gJWjllAY\n" + "73nBXvDZ1f4\n" + "P74RFL4FgaM\n" + "l6RkJVaB43w\n" + "8HBcV0MtAQg\n" + "JNYRmQGIB4M\n" + "TIQv0rR7c_w\n" + "thqXwRFuyeI\n" + "phLb_SoPBlA\n" + "y-5x24V8oSE\n" + "I-lGH0gEx7U\n" + "__r_j1wYLq4\n" + "kj1v1tVscqE\n" + "BabETPqgQsg\n" + "ogEUHBUV-bo\n" + "hIeDrT5Hbgg\n" + "3L5zNKi4W-U\n" + "zltSGlEvVQw\n" + "HF3CNVxj_Yg\n" + "aanb7kPc-uI\n" + "iPEXRMcCyho\n" + "rMWFRKmBE94\n" + "thcbyFqyFHg\n" + "rOh-SBaibNY\n" + "DRFV4UgSFas\n" + "CwaYUzwIM1I\n" + "hN8C8Ee8yKY\n" + "uU9Fe-WXew4\n" + "27rYl-D145A\n" + "YkWNyjRixyE\n" + "gL8RWNCyrOY\n" + "ypClJkPhx8o\n" + "OyJYZela1fA\n" + "eMztEjtPm4o\n" + "WICkl0LzIXU\n" + "zykN1Vfcajs\n" + "14ij-aEbhdY\n" + "PTv7cJjNig8\n" + "O_8JQDSIIPE\n" + "d0fyCiWKHEo\n" + "Sd8A3tZboFQ\n" + "xjCK7yGDzPs\n" + "9k2UIZpi56c\n" + "ss5msvokUkY\n" + "PhY0XDGGRks\n" + "yfcoeKzvNq8\n" + "fFpw1t45DXY\n" + "Jy1D6caG8nU\n" + "9unMOCRfut8\n" + "03ue9Nii41g\n" + "LNyA9DsKu0s\n" + "7HKx1Dj2_VU\n" + "WvCFCFqF68U\n" + "COz9lDCFHjw\n" + "EgfsXTOn_pI\n" + "u8Ub6triQPE\n" + "2fhA2WM1FpY\n" + "tdA8_DtQrlY\n" + "1Yn-MEynWC4\n" + "N2C9wLqAiPA\n" + "rdqlOcYKm_U\n" + "bW3ruxYuYVM\n" + "C99l5qMtTKA\n" + "e54Z65t_5z4\n" + " -jH56MgDU-0\n" + "b78eGNOAaC0\n" + "0Wguzcm-b40\n" + "L8h_cx5Z9w0\n" + "pZp2lMCRtvU\n" + " -y-0hf8bP-0\n" + "XpwI3ArofoI\n" + "zmauoumuQ4U\n" + "KCsex2tGXrs\n" + "Z9OEDZ6y6ls\n" + "LE3YSfY_64w\n" + "DbQ6v5UvMkU\n" + "khZ9X6l5AdQ\n" + "3ZanKCDvCUo\n" + "CuMkHGU6Q-c\n" + "oYLHXItjzG4\n" + "5hfeDEi8pFA\n" + "4R2ph9n1b-g\n" + "pAZfrUldiOc\n" + "rvjFKme0tt4\n" + "BZdD326cUj8\n" + "pR-zzUERFas\n" + "wdU6tyjEYrY\n" + "J87pJrxvJ5E\n" + "OQG-NqgKtUs\n" + "VSSX2qxAB5g\n" + "1MX3GEL2PsU\n" + "nnCxT-jf6Tw\n" + "QVyBvKsZI3M\n" + "LPmUHNaqKP0\n" + "2hTwFuLrMZg\n" + "MT4Ug_4RqJU\n" + "4YMNSvL0Mow\n" + "YwEGB_TM3dE\n" + "fYxEva04rGE\n" + "Fy8f_ZUKvC8\n" + "RLqo708UjTw\n" + "WakaE9NBvns\n" + "FwcF6I8qUxU\n" + "CkABCEkhfmU\n" + "vg4JGLfF33w\n" + "uje5c6P444o\n" + "_6UZ0iWyHHc\n" + "gQtKJbptcns\n" + "NKnuQBW4P1I\n" + "bAN54M6QMYI\n" + "F89mcNvzeqM\n" + "uqm5_ijp6QI\n" + "OCY9vN4QzqY\n" + "SEM6O4VIXi8\n" + "FBiYpeMRcOQ\n" + "nXgt3m_qJ6c\n" + "rGqcIf-RFt4\n" + "39OOABdi3oE\n" + "egumxoDWXow\n" + "guQ_Sy7uAEI\n" + "Zr3pwyRX3XU\n" + "h_u2YRluqQc\n" + "kdEBBLHwqGw\n" + "j59e6lDHudI\n" + "fyXD9Cq9Qj8\n" + "7M37NSU-piE\n" + "dwGswFIHN6o\n" + "b_-nuiaRFL0\n" + "3SNuuEcbYvY\n" + "oUqknxyD8k4\n" + "NNtv18qGdlc\n" + "MBsQD-7pwgQ\n" + "slQBccrGZBg\n" + "Rr5IcY2YL_w\n" + "9A7s3tNwAvw\n" + "dSzIGCxZP54\n" + "7AoDRvAFklI\n" + "VfInRNGvJJg\n" + "iEZNqXjBExw\n" + "wYwIqV1RK2A\n" + "GLzT-aNr2ss\n" + "hm41Du3-2pM\n" + "gLo1-dimAbw\n" + "Y9zEVu2a-xQ\n" + "BqORfK69gDY\n" + "mI-_tc5PXA4\n" + "MXMGAQ8iiu8\n" + "7Ljt29kNHAQ\n" + "uPa_ZMwPonk\n" + "Yj1VHGIwZUI\n" + "sr4vIBaumiM\n" + "jBSLzRzU8SU\n" + "ufCH9uSYsxM\n" + "wOtgPhkf6VA\n" + "Z9XwwfEJDeQ\n" + "HHhWS6wTWzk\n" + "YafP9rG7Ews\n" + "Ch5iF1X0UNA\n" + "XBzK1cXLxD4\n" + "ZTKgD2WKgTo\n" + "_mrVU110pzg\n" + "SBhfuA73dJw\n" + "Jk78U4Pm7bM\n" + "5gXrbaDHMrM\n" + "wP_zox5uwzg\n" + "L-7GQa3G1YA\n" + "JN1iN_CPzbo\n" + "SLjXz9ghUtk\n" + "lsaxzy5bv0A\n" + "ArxabWpfBm8\n" + "WB7LS3p7Tb4\n" + "wSTYIyQxfPQ\n" + "IAOvfSqw_Rs\n" + "pSjG47s7bgI\n" + "x7hdPzmoeVQ\n" + "w_a5mRbwr-o\n" + "8pafSWv6RV0\n" + "EzqB-Lwo2Aw\n" + "pQaEIMQLCr0\n" + "Tj9e5scOx-Q\n" + "JFjNWsC9Lfk\n" + "yCZmwGptRyQ\n" + "75wmW7xjyog\n" + "UeeCaNXNaC4\n" + "4c_i_JmttKg\n" + "jj2qYltyJGE\n" + "QMWKAWky4Kk\n" + "5HZ7QBnMX34\n" + "crDBuh4WZMg\n" + "Dw1Cdy2wQgM\n" + "rjLY14u2tXw\n" + "6FF1p--Zfjw\n" + "1bOZuIYA5xI\n" + "HmkwjDqRcIg\n" + "KugHDeAv9M4\n" + "qG70uKyFJuA\n" + "yeFJZB78970\n" + "vtj419ogV2k\n" + "URzOGF_QGls\n" + "6jgBcsRCqI8\n" + "KeMMvkFr3FQ\n" + "GRdCku68J5k\n" + "B9DRhRQUfeA\n" + "7f73x0gfrDM\n" + "GDAp37aHovo\n" + "BOvoL8YEIk0\n" + "y7lZ7iXv6ow\n" + "lfqNO8UCUgE\n" + "zavhi73gdPg\n" + "ajLECtAY1KY\n" + "sjcgg9fSf1o\n" + "KavaUJxnNVU\n" + "5uKc4C9T5ZQ\n" + " -gfE2ZaFKpM\n" + "4NSNZrpHjLc\n" + "fLMS2ExiKxg\n" + "qBTOmET6hyQ\n" + "Qeem6ZVr8Ic\n" + "KEM94RudPYc\n" + "1piPOhJDjsw\n" + "426jDsMYrzQ\n" + "4LZspVNCVgI\n" + "jNd_LxLnIkM\n" + "AF53AqylKxM\n" + "5NmJPzJNt0o\n" + "0XySyze3Al4\n" + "L6QHqtEfchI\n" + "76YH1VWA3MY\n" + "EIlaJ6VdbqM\n" + "XYTWokMGgYE\n" + "_bs409WyY1s\n" + "4Cfnm5d1DS8\n" + "Z4kMbMGaCyw\n" + "074r1TFfo0M\n" + "bVaWBUs0sgs\n" + "XNPCQaIQdEA\n" + "qHEZ6CsLmUk\n" + " -Iuirr3I6-Q\n" + "qkQAUprAWns\n" + "eJbUQFrXlvw\n" + "AFEC4GezaB0\n" + "kY9SyuRQ070\n" + "dkS_TrQdvpA\n" + "MyesO22H8cI\n" + "kTJ5rtWadcE\n" + "S6jgzL2Cjbc\n" + "5rXomP2HgNQ\n" + "Lf_xXwulsnk\n" + "AT6YDPWaty4\n" + "lMuGbTshbs4\n" + "4_GS2_YN5AA\n" + "pkIoPUxZ_x0\n" + " -Q8x82IBvCM\n" + "QSPaMxpkEiQ\n" + "7HRKlwPhgcY\n" + "QTCUKJv_dmc\n" + "HvWhzT_pbJU\n" + "bX4Hml7aUvU\n" + "iDJfP6akZkY\n" + "v1VTgCunuSs\n" + "dc6lluyZA8A\n" + "mjAcjdvVFPI\n" + "gnGqlvvsgbg\n" + "jxYUkFCmLQE\n" + "0O4FidcZwBM\n" + "ycBrCfbuOzA\n" + "QEv6VwwcvEE\n" + "m6ZCnVHTu1w\n" + "sEXj4jYtPB0\n" + "qvE0MbqycXs\n" + "DLokfuBbnao\n" + "7O0_8sVzVts\n" + "hKjoLnjjp5E\n" + "U-oAnxj4DEM\n" + "lSKdCKWU53U\n" + "PAQzhOLsLPk\n" + "W5Sq71VTJ9Q\n" + "8PQu-5TPlik\n" + "0ISu3iVzL-U\n" + "r5MR7_INQwg\n" + "cELBX4RUwMQ\n" + "3bSGH0xEJSQ\n" + "F-8lGKRKVDg\n" + "o8XTO0pRvj8\n" + "WG2p4ZcgeH8\n" + "HHiddAj-Dqc\n" + "WmSb9YLDSYs\n" + "plh6_BAuZ_c\n" + "DIkOKUBlVoY\n" + "yeCcPhEdwws\n" + "v_R4Qq1OmBs\n" + "Hc8-pD4Dzpg\n" + "v7F4QlCsCnA\n" + "NZCeMVtSGr0\n" + "YJWYkSPQNQE\n" + "SUIpbBJeweo\n" + "y__6jMr1YLQ\n" + "vGDHEJMx7zM\n" + "SIi63UvlKG8\n" + "tJEbiL905OQ\n" + "tQAF5W6NS88\n" + "seyuHkQsquo\n" + "D5A6Dy6pEZE\n" + "zWYyycn_yCU\n" + "F-OeFm6y384\n" + "NSmxdUPEYfs\n" + "3YQh2SkrvSc\n" + "LJCECrDyOog\n" + "K9R_CxeOGFI\n" + "m1RX3yrZVh4\n" + "lBJyM80KPzA\n" + " -G6NM6S4318\n" + "AKWj2icAXgY\n" + "Y8qtmD_QTYw\n" + "NQHFaXaY5TA\n" + "kzLGilDDNQo\n" + "xxpfm-5kjDA\n" + "9XhBv1u7al0\n" + "vIBE-ylmqb4\n" + "D1627qvYB5Y\n" + "Cj9Cb6xV-S0\n" + "Rh3bJKkEhk8\n" + "Vo04gkyloWM\n" + "XGC4QpDIpJc\n" + "__M96CwdX9c\n" + "6E5mKpdLQlw\n" + "48ydDUQ16RE\n" + "V8uWlY-0coE\n" + "j7AJdbL27J0\n" + "inOEtUwSasc\n" + "rNYUdeG6q4A\n" + "ZKpLn4GPdHY\n" + "Dihsu6bwIVw\n" + "FYsKN6DpDcY\n" + "6AzImKchKsU\n" + "Nscm2ngD90w\n" + "RUeiEs3nFLM\n" + "yf5Y20Ls7WE\n" + "KZ6Qs5ipIq4\n" + "Pulrsg3FizI\n" + "XmZYt-JBTkw\n" + "A4YPuj9H0Wk\n" + "qy33soZLh3w\n" + "cRFHm-EJsE0\n" + "5aGTim8PVh8\n" + "ZpqrdN6E9-k\n" + "QqnNyMXpuwo\n" + "O0Id0olaeFw\n" + "1AVYFk6hydo\n" + "Mb_GmBX5QvI\n" + "nbSNF9_b6jc\n" + "dr7VcTX_5pc\n" + "CvBGyQvBs9c\n" + "WYT4gMDHYZw\n" + "sI1JdpnKLBk\n" + "z7MzeWiqsVg\n" + "qD6vx7IQCS0\n" + "Y0lAfQc-iHM\n" + "Fx7_8G6DQ1I\n" + "3cmJvY1g_bQ\n" + "M-0TB9JMpdE\n" + "l9fN-8NjrvI\n" + "kc-eSOUNtbk\n" + "bs5hFgVpGME\n" + "6nLfSN2u5gg\n" + "frYLvC0mM50\n" + "ovH9u4HpeFY\n" + "9Ut5l3hZRn0\n" + "x3gSsfev1UA\n" + "anWb6yQejJU\n" + "JdaJM4RZppw\n" + "2y6zdAbN9o8\n" + "M8q5mg-yj0A\n" + "fpgSYmjs2YY\n" + "VhVZa63iHzM\n\n"; final String subst = "https://youtube.com/watch?v="; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); 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