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

/
/
gm

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 = "^[0-9]+[a-z]{0,2}(\\s\\((IV|V?I{0,3})\\))?$"; final String string = "1\n" + "2\n" + "3\n" + "4\n" + "5\n" + "6\n" + "7\n" + "8\n" + "8a\n" + "8b\n" + "8c\n" + "8d\n" + "8e\n" + "8f\n" + "8g\n" + "8h\n" + "9\n" + "10\n" + "11\n" + "12\n" + "13\n" + "14\n" + "15\n" + "16\n" + "17\n" + "17a\n" + "17b\n" + "17c\n" + "18\n" + "19\n" + "20\n" + "21\n" + "22\n" + "23 (I)\n" + "23 (II)\n" + "24\n" + "24a\n" + "24b\n" + "24c\n" + "25\n" + "26\n" + "27\n" + "28\n" + "30\n" + "31 (I)\n" + "31 (II)\n" + "32\n" + "33\n" + "34\n" + "34a\n" + "34b\n" + "34c\n" + "34d\n" + "34e\n" + "34f\n" + "34g\n" + "34h\n" + "34i\n" + "34j\n" + "34k\n" + "35\n" + "36\n" + "37\n" + "38\n" + "39\n" + "40\n" + "41\n" + "42\n" + "43\n" + "43a\n" + "43b\n" + "44 (I)\n" + "44 (II)\n" + "45\n" + "46\n" + "47\n" + "48\n" + "49\n" + "50\n" + "51\n" + "52\n" + "53\n" + "54\n" + "55\n" + "56\n" + "57\n" + "58\n" + "59a\n" + "59b\n" + "59c\n" + "59d\n" + "60\n" + "61\n" + "62\n" + "63\n" + "64\n" + "65\n" + "66\n" + "67\n" + "67c\n" + "68\n" + "69\n" + "70\n" + "71\n" + "72\n" + "73\n" + "74\n" + "75\n" + "76\n" + "76a\n" + "77\n" + "78\n" + "79\n" + "80\n" + "81\n" + "82\n" + "83\n" + "84\n" + "84a\n" + "84b\n" + "85\n" + "86\n" + "86a\n" + "87\n" + "89\n" + "89a\n" + "90\n" + "91\n" + "91a\n" + "91b\n" + "92\n" + "93\n" + "94\n" + "95\n" + "96\n" + "96a\n" + "97\n" + "98\n" + "99\n" + "100\n" + "101\n" + "102\n" + "103\n" + "104\n" + "105\n" + "106\n" + "106a\n" + "106b\n" + "106c\n" + "106d\n" + "106e\n" + "106f\n" + "107\n" + "108\n" + "109\n" + "110\n" + "111\n" + "112\n" + "113\n" + "114\n" + "115\n" + "116\n" + "117\n" + "118\n" + "119\n" + "120\n" + "121\n" + "122\n" + "125\n" + "126\n" + "127\n" + "128\n" + "129\n" + "130\n" + "131\n" + "132\n" + "133\n" + "134\n" + "135\n" + "136 (I)\n" + "136 (II)\n" + "136 (III)\n" + "136 (IV)\n" + "136 (V)\n" + "136 (VI)\n" + "136b\n" + "137\n" + "138\n" + "138a\n" + "138b\n" + "138c\n" + "138d\n" + "138e\n" + "139\n" + "140\n" + "141\n" + "142\n" + "142a\n" + "142b\n" + "142c\n" + "142d\n" + "143\n" + "144\n" + "145\n" + "146\n" + "147\n" + "147a\n" + "147b\n" + "147c\n" + "147d\n" + "147e\n" + "148\n" + "149\n" + "150\n" + "150a\n" + "151\n" + "151a\n" + "151b\n" + "151c\n" + "151d\n" + "152\n" + "153\n" + "154\n" + "154a\n" + "154b\n" + "155\n" + "156\n" + "157\n" + "158\n" + "159\n" + "160\n" + "161\n" + "162\n" + "162b\n" + "162c\n" + "163 (I)\n" + "163 (II)\n" + "164\n" + "165\n" + "166\n" + "167\n" + "167a\n" + "167b\n" + "168\n" + "169\n" + "170\n" + "171\n" + "172\n" + "173\n" + "174\n" + "175 (I)\n" + "175 (II)\n" + "176\n" + "177\n" + "178\n" + "179\n" + "180\n" + "181 (I)\n" + "181 (II)\n" + "182\n" + "183\n" + "184\n" + "185\n" + "186\n" + "187\n" + "188\n" + "189\n" + "190\n" + "191\n" + "192\n" + "193\n" + "194\n" + "195\n" + "196\n" + "197\n" + "198\n" + "199\n" + "200\n" + "201\n" + "202\n" + "203\n" + "204\n" + "205\n" + "206\n" + "207\n" + "208\n" + "209\n" + "210\n" + "211\n" + "212\n" + "213\n" + "214\n" + "215\n" + "217\n" + "218\n" + "219\n" + "220\n" + "221\n" + "222\n" + "223\n" + "224\n" + "225\n" + "226\n" + "227\n" + "228\n" + "229\n" + "230\n" + "231\n" + "232\n" + "233\n" + "234\n" + "235\n" + "236\n" + "237\n" + "238\n" + "239\n" + "240\n" + "241\n" + "242\n" + "243\n" + "244\n" + "245\n" + "246\n" + "247\n" + "248\n" + "249\n" + "250\n" + "251\n" + "252\n" + "253\n" + "254\n" + "255 (I)\n" + "255 (II)\n" + "255 (IV)\n" + "256\n" + "256a\n" + "256b\n" + "256c\n" + "256e\n" + "256f\n" + "256g\n" + "256h\n" + "256i\n" + "256j (I)\n" + "256j (II)\n" + "256k\n" + "256l\n" + "256m\n" + "256n\n" + "256o\n" + "256q\n" + "256r\n" + "256s\n" + "256t\n" + "256u\n" + "256v\n" + "256w\n" + "256x\n" + "256y\n" + "256aa\n" + "256ab\n" + "256ac\n" + "256ad\n" + "256ae\n" + "256af\n" + "256ag\n" + "256ah\n" + "256ai\n" + "256aj\n" + "256ak\n" + "256al\n" + "256am\n" + "256an\n" + "256ao\n" + "256ap\n" + "256aq\n" + "256ar\n" + "256as\n" + "257a\n" + "257b\n" + "257c\n" + "258\n" + "259\n" + "260\n" + "261\n" + "262\n" + "263\n" + "264\n" + "265\n" + "265a\n" + "266\n" + "267\n" + "267a\n" + "267b\n" + "267c\n" + "267d\n" + "268\n" + "269\n" + "270\n" + "270a\n" + "270b\n" + "270c\n" + "271\n" + "272\n" + "273\n" + "274\n" + "275\n" + "276\n" + "277\n" + "277a\n" + "277b\n" + "278\n" + "279\n" + "280\n" + "281\n" + "282\n" + "283\n" + "284\n" + "285 (I)\n" + "285 (II)\n" + "286\n" + "287\n" + "288\n" + "290\n" + "291\n" + "292\n" + "293\n" + "294\n" + "295\n" + "296 (I)\n" + "296 (II)\n" + "296 (III)\n" + "297\n" + "298 (I)\n" + "298 (II)\n" + "299\n" + "300\n" + "301\n" + "303\n" + "304\n" + "305\n" + "306\n" + "307\n" + "308\n" + "309\n" + "310\n" + "311\n" + "312 (I)\n" + "312 (II)\n" + "313\n" + "314\n" + "315\n" + "316\n" + "317\n" + "319\n" + "320\n" + "321\n" + "322\n" + "323\n" + "324\n" + "324a\n" + "324b\n" + "324c\n" + "324d\n" + "324e\n" + "324g\n" + "324h\n" + "324i\n" + "324j\n" + "324k\n" + "324l\n" + "325\n" + "326\n" + "327\n" + "328\n" + "329\n" + "330\n" + "331\n" + "332\n" + "333\n" + "334\n" + "335\n" + "336\n" + "337\n" + "338\n" + "338a\n" + "338b\n" + "338c\n" + "339\n" + "340\n" + "341\n" + "341a\n" + "342\n" + "342a\n" + "343 (I)\n" + "343 (II)\n" + "344\n" + "345\n" + "345a\n" + "345b\n" + "345c\n" + "345d\n" + "345e\n" + "346\n" + "347\n" + "348\n" + "349\n" + "350\n" + "351\n" + "352\n" + "353\n" + "354\n" + "355\n" + "355a\n" + "355b\n" + "356\n" + "356a\n" + "356b\n" + "356c\n" + "358\n" + "358a\n" + "358b\n" + "359\n" + "360\n" + "360a\n" + "361\n" + "362\n" + "363\n" + "364\n" + "365\n" + "366\n" + "367\n" + "368\n" + "369\n" + "370\n" + "371\n" + "372\n" + "373\n" + "374\n" + "375\n" + "375a\n" + "375b\n" + "375c\n" + "376\n" + "377\n" + "378\n" + "379\n" + "380\n" + "381\n" + "382\n" + "383\n" + "384\n" + "384a\n" + "384b\n" + "384d\n" + "384e\n" + "384f\n" + "385\n" + "386\n" + "386a\n" + "386b\n" + "386c\n" + "386d\n" + "386e\n" + "387\n" + "388\n" + "389\n" + "390\n" + "391\n" + "392\n" + "393\n" + "394\n" + "395\n" + "396\n" + "397\n" + "398\n" + "399\n" + "400\n" + "401\n" + "402\n" + "403\n" + "404\n" + "405\n" + "406\n" + "407\n" + "408\n" + "409 (I)\n" + "409 (II)\n" + "409 (III)\n" + "410 (I)\n" + "410 (II)\n" + "411\n" + "412\n" + "413\n" + "414\n" + "415\n" + "416\n" + "417 (I)\n" + "417 (II)\n" + "418\n" + "419\n" + "420\n" + "421\n" + "422\n" + "422a\n" + "422b (I)\n" + "422b (II)\n" + "422c\n" + "423\n" + "424\n" + "424a\n" + "425\n" + "426\n" + "427\n" + "428\n" + "429 (I)\n" + "429 (II)\n" + "430\n" + "431\n" + "432\n" + "433\n" + "434\n" + "435\n" + "435a\n" + "436\n" + "437\n" + "438\n" + "439\n" + "440 (I)\n" + "440 (II)\n" + "440 (III)\n" + "440 (IV)\n" + "441\n" + "442\n" + "443 (I)\n" + "443 (II)\n" + "444\n" + "445\n" + "446\n" + "447\n" + "448 (I)\n" + "448 (II)\n" + "449\n" + "450\n" + "451\n" + "452\n" + "453\n" + "454\n" + "455\n" + "456\n" + "457\n" + "458\n" + "459\n" + "460\n" + "461\n" + "462\n" + "463\n" + "464\n" + "465\n" + "466\n" + "467\n" + "468\n" + "469\n" + "470\n" + "471\n" + "472\n" + "473\n" + "474\n" + "475\n" + "476\n" + "477\n" + "478\n" + "479\n" + "480\n" + "481\n" + "482\n" + "483\n" + "484\n" + "485\n" + "486\n" + "487\n" + "488\n" + "489\n" + "490\n" + "491\n" + "492\n" + "493\n" + "494\n" + "495\n" + "496\n" + "497\n" + "498\n" + "499\n" + "500\n" + "501\n" + "502 (I)\n" + "502 (II)\n" + "503\n" + "504\n" + "505\n" + "506\n" + "507\n" + "508\n" + "509\n" + "510\n" + "511\n" + "513\n" + "514\n" + "515 (I)\n" + "515 (II)\n" + "516\n" + "517\n" + "518\n" + "519\n" + "520\n" + "521\n" + "522\n" + "523\n" + "524\n" + "525\n" + "526\n" + "527\n" + "528\n" + "529\n" + "530\n" + "531\n" + "532\n" + "533\n" + "534\n" + "535\n" + "536\n" + "537\n" + "538\n" + "539\n" + "540\n" + "541\n" + "542\n" + "543\n" + "544\n" + "545\n" + "546\n" + "547\n" + "548\n" + "549\n" + "550\n" + "551\n" + "552\n" + "553\n" + "554\n" + "555\n" + "556\n" + "557\n" + "558\n" + "559\n" + "560\n" + "561\n" + "562\n" + "563\n" + "564\n" + "565\n" + "566\n" + "567\n" + "568\n" + "569\n" + "570\n" + "571\n" + "572\n" + "573\n" + "574\n" + "575\n" + "576\n" + "577\n" + "578\n" + "579\n" + "580\n" + "581\n" + "582\n" + "583 (I)\n" + "583 (II)\n" + "584\n" + "585\n" + "586\n" + "587\n" + "588\n" + "589\n" + "590\n" + "591\n" + "592\n" + "593\n" + "594\n" + "595\n" + "596\n" + "597\n" + "598\n" + "599\n" + "600 (I)\n" + "600 (II)\n" + "601\n" + "602\n" + "603 (I)\n" + "603 (II)\n" + "604\n" + "605 (I)\n" + "605 (II)\n" + "606\n" + "607\n" + "608 (I)\n" + "608 (II)\n" + "609\n" + "610\n" + "611\n" + "612\n" + "613 (I)\n" + "613 (II)\n" + "614 (I)\n" + "614 (II)\n" + "615\n" + "616\n" + "617\n" + "618\n" + "619\n" + "620\n" + "621\n" + "622\n" + "623\n" + "624\n" + "625\n" + "626\n" + "627\n" + "628\n" + "629\n" + "630\n" + "631\n" + "632\n" + "633\n" + "634\n" + "635\n" + "636\n" + "637\n" + "638\n" + "639\n" + "640\n" + "641\n" + "642\n" + "643\n" + "644\n" + "645\n" + "646\n" + "647\n" + "648\n" + "649\n" + "650\n" + "651\n" + "652\n" + "653\n" + "654\n" + "655\n" + "656\n" + "657\n" + "658\n" + "659\n" + "660\n" + "661\n" + "662\n" + "663\n" + "664\n" + "665\n" + "666\n" + "667\n" + "668\n" + "669\n" + "670\n" + "671\n" + "672\n" + "673\n" + "674\n" + "675\n" + "676\n" + "677\n" + "678\n" + "679\n" + "680\n" + "681\n" + "682\n" + "683\n" + "684\n" + "685\n" + "686\n" + "687\n" + "688\n" + "689\n" + "690\n" + "691\n" + "692\n" + "693\n" + "694\n" + "695\n" + "696 (I)\n" + "696 (II)\n" + "696 (III)\n" + "696 (IV)\n" + "696 (V)\n" + "696 (VI)\n" + "697\n" + "698\n" + "699\n" + "700\n" + "701\n" + "702 (I)\n" + "702 (II)\n" + "703\n" + "704\n" + "705\n" + "706\n" + "707\n" + "708 (I)\n" + "708 (II)\n" + "708 (III)\n" + "709\n" + "710\n" + "710a\n" + "710b\n" + "710c\n" + "710d\n" + "710e (I)\n" + "710e (II)\n" + "710f\n" + "710g\n" + "710h\n" + "710i\n" + "710j\n" + "710k\n" + "710l\n" + "710m\n" + "710n\n" + "710o\n" + "710p\n" + "710q\n" + "710r\n" + "710t\n" + "710u\n" + "710v\n" + "710w\n" + "710x\n" + "710y\n" + "710z\n" + "710aa\n" + "710ab\n" + "710ac\n" + "710ad\n" + "710ae\n" + "710af\n" + "710ag\n" + "710ah\n" + "710ai\n" + "710aj\n" + "710ak\n" + "710al\n" + "710am\n" + "710an\n" + "710ao\n" + "710ap\n" + "710aq\n" + "710ar\n" + "710as\n" + "710at\n" + "710au\n" + "710av\n" + "710aw\n" + "710ax\n" + "710ay\n" + "710az\n" + "710ba\n" + "710bb\n" + "710bc\n" + "710bd\n" + "710be\n" + "710bf\n" + "710bg\n" + "710bh\n" + "710bi\n" + "710bj\n" + "710bk\n" + "710bl\n" + "710bm\n" + "710bn\n" + "710bo\n" + "710bp\n" + "710bq\n" + "710br\n" + "710bs\n" + "710bt\n" + "710bu\n" + "710bv\n" + "710bw\n" + "710bx\n" + "710by\n" + "710bz\n" + "710ca\n" + "710cb\n" + "710cc\n" + "710cd\n" + "710ce\n" + "710cf\n" + "710cg\n" + "710ch\n" + "710ci\n" + "711\n" + "712\n" + "713\n" + "714\n" + "715\n" + "716\n" + "716a\n" + "716b\n" + "717\n" + "718\n" + "719\n" + "720\n" + "720a\n" + "720b\n" + "721\n" + "722 (I)\n" + "722 (II)\n" + "723\n" + "724\n" + "725 (I)\n" + "725 (II)\n" + "725 (III)\n" + "725 (IV)\n" + "726\n" + "727\n" + "728\n" + "729\n" + "730\n" + "731\n" + "732\n" + "733\n" + "734\n" + "735\n" + "736\n" + "737\n" + "738\n" + "739\n" + "739a\n" + "739c\n" + "739d\n" + "739e\n" + "739f\n" + "739g\n" + "740\n" + "741\n" + "742\n" + "743\n" + "744\n" + "745\n" + "746\n" + "747\n" + "748\n" + "749\n" + "750\n" + "751\n" + "752\n" + "753\n" + "754\n" + "755\n" + "756\n" + "757\n" + "758\n" + "759\n" + "760\n" + "761\n" + "762\n" + "763\n" + "764\n" + "765\n" + "766\n" + "767\n" + "768\n" + "769\n" + "770\n" + "771\n" + "772\n" + "773\n" + "774\n" + "774a\n" + "774b\n" + "774c\n" + "774d\n" + "774e\n" + "774f\n" + "774g\n" + "774h\n" + "774i\n" + "774j\n" + "774k\n" + "774w\n" + "774x\n" + "774y\n" + "774z\n" + "774aa\n" + "774ab\n" + "774ac\n" + "774ad\n" + "774ae\n" + "774af\n" + "774ag\n" + "774ah\n" + "774ai\n" + "775\n" + "776\n" + "777\n" + "778\n" + "779\n" + "779a\n" + "780\n" + "780a\n" + "781\n" + "782\n" + "783 (I)\n" + "783 (II)\n" + "783a\n" + "783b\n" + "784\n" + "785\n" + "786\n" + "787\n" + "787a\n" + "787b\n" + "788\n" + "788a\n" + "788b\n" + "789\n" + "790\n" + "790a\n" + "790b\n" + "791\n" + "792\n" + "793\n" + "794\n" + "795\n" + "796\n" + "797\n" + "798\n" + "799\n" + "800\n" + "802\n" + "803\n" + "804\n" + "805\n" + "806\n" + "807\n" + "808\n" + "810\n" + "812\n" + "813\n" + "814\n" + "815\n" + "816\n" + "817\n" + "818\n" + "819\n" + "820\n" + "821 (I)\n" + "821 (II)\n" + "821 (III)\n" + "822\n" + "823\n" + "824\n" + "825\n" + "826\n" + "827\n" + "828\n" + "829\n" + "830\n" + "831\n" + "832\n" + "833\n" + "834\n" + "835\n" + "836\n" + "836a\n" + "836b\n" + "836c\n" + "836d\n" + "836e\n" + "836f\n" + "836h\n" + "836i\n" + "836j\n" + "836k\n" + "836l\n" + "836m\n" + "836q\n" + "836r\n" + "836s\n" + "836t\n" + "836u\n" + "836v\n" + "836w\n" + "836x\n" + "836y\n" + "836z\n" + "837\n" + "838\n" + "839\n" + "840\n" + "841\n" + "842\n" + "843\n" + "844\n" + "845\n" + "845a\n" + "845b\n" + "845c\n" + "845d\n" + "846\n" + "847\n" + "848\n" + "848a\n" + "848b\n" + "848c\n" + "849\n" + "850\n" + "850a\n" + "850b\n" + "851\n" + "852\n" + "853\n" + "854\n" + "855\n" + "856\n" + "857\n" + "858\n" + "859\n" + "860\n" + "861\n" + "862\n" + "863\n" + "864\n" + "865\n" + "866\n" + "867\n" + "868\n" + "869\n" + "870\n" + "871\n" + "872\n" + "873\n" + "874\n" + "875\n" + "875a\n" + "875b\n" + "875c\n" + "875d\n" + "875e\n" + "875f\n" + "875g\n" + "875h\n" + "875i\n" + "875j\n" + "875k\n" + "875l\n" + "876\n" + "877\n" + "878\n" + "879\n" + "880\n" + "881\n" + "882\n" + "883 (I)\n" + "883 (II)\n" + "883a\n" + "883b\n" + "883c\n" + "884\n" + "885\n" + "886\n" + "887\n" + "888\n" + "889\n" + "890 (I)\n" + "890 (II)\n" + "891\n" + "892\n" + "893\n" + "894\n" + "895\n" + "896\n" + "897\n" + "898 (I)\n" + "898 (II)\n" + "899\n" + "900\n" + "901\n" + "902\n" + "903\n" + "904\n" + "905\n" + "906\n" + "907\n" + "908\n" + "909\n" + "910\n" + "911\n" + "912\n" + "913\n" + "914\n" + "915\n" + "916\n" + "917\n" + "918\n" + "919\n" + "920\n" + "921\n" + "922 (I)\n" + "922 (II)\n" + "923\n" + "924\n" + "925\n" + "926\n" + "927\n" + "928\n" + "929\n" + "930\n" + "931\n" + "932\n" + "933\n" + "934\n" + "935\n" + "936\n" + "937\n" + "938\n" + "939\n" + "940\n" + "941\n" + "942\n" + "943\n" + "944\n" + "945\n" + "946\n" + "947\n" + "948\n" + "949\n" + "950\n" + "951\n" + "952\n" + "953\n" + "954\n" + "955\n" + "956\n" + "957\n" + "957a\n" + "957d\n" + "957e\n" + "957f\n" + "957h\n" + "957i (I)\n" + "957i (II)\n" + "958\n" + "959\n" + "960\n" + "961\n" + "963\n" + "964\n" + "965\n" + "966\n" + "967\n" + "968\n" + "969\n" + "970\n" + "971\n" + "972\n" + "973\n" + "974\n" + "975\n" + "976\n" + "977\n" + "977a\n" + "977b\n" + "977c\n" + "977d\n" + "977e\n" + "977f\n" + "977g\n" + "977h\n" + "978\n" + "979\n" + "980\n" + "981\n" + "982\n" + "983\n" + "984\n" + "985\n" + "986\n" + "987\n" + "988\n" + "989\n" + "990\n" + "991\n" + "992\n" + "993\n" + "994\n" + "995\n" + "996\n" + "997\n" + "998 (I)\n" + "998 (II)\n" + "998 (III)\n" + "999\n" + "999a\n" + "1000\n" + "1001\n" + "1002\n" + "1003\n" + "1004\n" + "1005\n" + "1006\n" + "1007\n" + "1008\n" + "1009\n" + "1010\n" + "1011\n" + "1012\n" + "1013\n" + "1014\n" + "1015\n" + "1016\n" + "1017\n" + "1018\n" + "1019\n" + "1019a\n" + "1019b\n" + "1019c\n" + "1019d\n" + "1019e\n" + "1019f\n" + "1019g\n" + "1019h\n" + "1019i\n" + "1019j\n" + "1020\n" + "1021\n" + "1022\n" + "1022a\n" + "1023\n" + "1024\n" + "1026\n" + "1027\n" + "1028\n" + "1029\n" + "1030\n" + "1031\n" + "1032\n" + "1033\n" + "1034\n" + "1035\n" + "1036\n" + "1037\n" + "1038\n" + "1039\n" + "1040\n" + "1041\n" + "1042\n" + "1043\n" + "1044\n" + "1045\n" + "1046\n" + "1047\n" + "1048\n" + "1049\n" + "1050\n" + "1051\n" + "1053\n" + "1054\n" + "1055\n" + "1056\n" + "1057\n" + "1058\n" + "1059\n" + "1060\n" + "1060a\n" + "1060b\n" + "1063\n" + "1063a\n" + "1064\n" + "1065\n" + "1066\n" + "1067\n" + "1068\n" + "1069\n" + "1070\n" + "1071\n" + "1072\n" + "1072a\n" + "1073\n" + "1074\n" + "1075\n" + "1076\n" + "1077\n" + "1078\n" + "1079\n" + "1080\n" + "1082\n" + "1083\n" + "1084\n" + "1085\n" + "1086\n" + "1087\n" + "1088\n" + "1089\n" + "1090\n" + "1091\n" + "1092\n" + "1093\n" + "1094\n" + "1095\n" + "1096\n" + "1097\n" + "1098\n" + "1099\n" + "1100\n" + "1101\n" + "1102\n" + "1103\n" + "1104\n" + "1105\n" + "1106\n" + "1107"; 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