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

/
/
ig

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 = "([[]WebMethod.*[]])\\s*public\\s+static\\s+void[^\\{]*(?<prevTry>\\{\\s*)(?<try>.{3})"; final String string = "using Framework.Core.Impls.Dependency;\n" + "using Framework.Core.Impls.Extensions;\n" + "using Framework.Data.Models;\n" + "using Framework.DataAccess.Interfaces;\n" + "using KocSistem.LeasingCommon;\n" + "using Leasing.Data.Modules;\n" + "using Leasing.Service.Interfaces;\n" + "using System;\n" + "using System.Collections.Generic;\n" + "using System.Linq;\n" + "using System.Web;\n" + "using System.Web.Services;\n" + "using System.Web.UI;\n" + "using System.Web.UI.WebControls;\n" + "using Telerik.Web.UI;\n\n" + "namespace LeasingWeb.Test\n" + "{\n" + " public partial class EF_DEMO : AppCode.BasePage\n" + " {\n" + " protected void Page_Load(object sender, EventArgs e)\n" + " {\n" + " Framework.Core.Logging.LoggerFactory.Info(\"TEST\");\n" + " Framework.Core.Logging.LoggerFactory.Error(new Exception(\"TEST EXC\"));\n" + " Framework.Core.Logging.LoggerFactory.Debug(\"DEBUG\");\n\n" + " BindGrid();\n\n" + " //this.ShowMessage(\"test\", KocSistem.LeasingCommon.MessageSeverity.Success);\n" + " }\n\n" + " /*public void Page_Error(object sender, EventArgs e)\n" + " { \n" + " HandleError();\n" + " }*/\n\n" + " private void BindGrid()\n" + " {\n" + " using (var demo = DependencyFactory.Resolve<IDemoService>())\n" + " {\n" + " var result = demo.GetPagedList(new Framework.Data.Models.PagedListInput\n" + " {\n" + " PageIndex = 1,\n" + " PageSize = 3,\n" + " Sorting = \"Id\",\n" + " SortType = Framework.Data.Models.PagedListSortType.Descending\n" + " });\n" + " grdUsers.DataSource = result.Items;\n" + " grdUsers.DataBind();\n" + " }\n" + " }\n\n" + " [WebMethod(true)]\n" + " public static string GetGridData(KsGridPagingParams ksGridPagingParams, \n\n" + " string a_customParams123)\n" + " {\n" + " /*using (var da = DependencyFactory.Resolve<IDataBaseFactory>().GetDataBase())\n" + " {\n" + " var input = new PagedListInput();\n" + " input.TableName = \"DEMO_MASTER\"; // Tablo adı\n" + " input.SelectColumns = \"*\"; \n" + " input.PageIndex = ksGridPagingParams.PageIndex;\n" + " input.PageSize = ksGridPagingParams.PageSize;\n\n" + " input.Filter = ksGridPagingParams.Filters.ToFilterSqlString(ksGridPagingParams.ModelFields);\n" + " input.Sorting = ksGridPagingParams.Sorts.ToSortString();\n\n" + " var result = da.GetPagedList(input);\n" + " return result.ToJsonString();\n" + " }*/\n\n" + " using (var demo = DependencyFactory.Resolve<IDemoService>())\n" + " {\n" + " return demo.GetPagedList(ksGridPagingParams).ToJsonString();\n" + " //return demo.GetAll().ToJsonString();\n" + " }\n" + " }\n\n" + " [WebMethod(true)]\n" + " public static string SaveGridRow(DemoMasterData model, string customParams)\n" + " {\n" + " using (var demo = DependencyFactory.Resolve<IDemoService>())\n" + " {\n" + " return demo.Save(model).ToJsonString();\n" + " }\n" + " }\n" + " [WebMethod(true)]\n" + " public static void DeleteGridRow(DemoMasterData model, string customParams)\n" + " {\n" + " using (var demo = DependencyFactory.Resolve<IDemoService>())\n" + " {\n" + " demo.Delete(model);\n" + " }\n" + " }\n\n" + " [WebMethod(true)]\n" + " public static string GetDetailGridData(KsGridPagingParams ksGridPagingParams)\n" + " {\n" + " using (var demo = DependencyFactory.Resolve<IDemoDetailService>())\n" + " {\n" + " var parentId = ksGridPagingParams.ParentId.ToInt();\n" + " //return demo.GetPagedList(ksGridPagingParams, d => d.MasterId == parentId).ToJsonString(); ;\n" + " return demo.GetPagedList(ksGridPagingParams).ToJsonString(); ;\n" + " }\n" + " }\n" + " [WebMethod(true)]\n" + " public static string SaveDetailGridRow(DemoDetailData model)\n" + " {\n" + " using (var demo = DependencyFactory.Resolve<IDemoDetailService>())\n" + " {\n" + " return demo.Save(model).ToJsonString();\n" + " }\n" + " }\n" + " [WebMethod(true)]\n" + " public static void DeleteDetailGridRow(DemoDetailData model)\n" + " {\n" + " using (var demo = DependencyFactory.Resolve<IDemoDetailService>())\n" + " {\n" + " demo.Delete(model);\n" + " }\n" + " }\n\n\n" + " struct City\n" + " {\n" + " public int CityId { get; set; }\n" + " public string Name { get; set; }\n" + " }\n" + " struct District\n" + " {\n" + " public int DistrictId { get; set; }\n" + " public string Name { get; set; }\n" + " public int CityId { get; set; }\n" + " }\n" + " struct Address\n" + " {\n" + " public int AddressId { get; set; }\n" + " public string Name { get; set; }\n" + " }\n" + " struct Phone\n" + " {\n" + " public int PhoneId { get; set; }\n" + " public int DistrictId { get; set; }\n" + " public int AddressId { get; set; }\n" + " public string Number { get; set; }\n" + " }\n\n" + " [WebMethod(true)]\n" + " public static object GetCities(KsFilterParams filter)\n" + " {\n" + " var cities = new List<City>();\n\n" + " if (cities is null)\n" + " {\n" + " cities = new List<City>();\n" + " }\n\n" + " cities.Add(new City { CityId = 1, Name = \"İstanbul\" });\n" + " cities.Add(new City { CityId = 2, Name = \"Ankara\" });\n" + " cities.Add(new City { CityId = 3, Name = \"İzmir\" });\n" + " cities.Add(new City { CityId = 4, Name = \"Bilecik\" });\n\n\n" + " for (int i = 5; i <= 10; i++)\n" + " {\n" + " cities.Add(new City { CityId = i, Name = string.Format(\"Test Şehir({0})\", i) });\n" + " }\n\n" + " return cities.Filter(filter);\n" + " }\n\n" + " [WebMethod(true)]\n" + " public static object GetDistricts(KsFilterParams filter)\n" + " {\n" + " var districts = new List<District>();\n\n" + " districts.Add(new District { CityId = 1, DistrictId = 1, Name = \"Esenler\" });\n" + " districts.Add(new District { CityId = 1, DistrictId = 2, Name = \"Güngören\" });\n" + " districts.Add(new District { CityId = 1, DistrictId = 3, Name = \"Bağcılar\" });\n\n" + " districts.Add(new District { CityId = 2, DistrictId = 4, Name = \"Çankaya\" });\n" + " districts.Add(new District { CityId = 2, DistrictId = 5, Name = \"Keçiören\" });\n\n" + " districts.Add(new District { CityId = 3, DistrictId = 6, Name = \"Karşıyaka\" });\n" + " districts.Add(new District { CityId = 3, DistrictId = 7, Name = \"Göztepe\" });\n\n\n" + " for (int i = 8; i <= 20; i++)\n" + " {\n" + " districts.Add(new District { DistrictId = i, CityId = (i % 990) + 1, Name = string.Format(\"Test İlçe({0})\", i) });\n" + " }\n\n\n" + " return districts.Filter(filter);\n" + " }\n\n" + " [WebMethod(true)]\n" + " public static object GetAddresses(KsFilterParams filter)\n" + " {\n" + " var addresses = new List<Address>();\n\n" + " addresses.Add(new Address { AddressId = 1, Name = \"Adres1\" });\n" + " addresses.Add(new Address { AddressId = 2, Name = \"Adres2\" });\n" + " addresses.Add(new Address { AddressId = 3, Name = \"Adres3\" });\n" + " addresses.Add(new Address { AddressId = 4, Name = \"Adres4\" });\n" + " addresses.Add(new Address { AddressId = 5, Name = \"Adres5\" });\n" + " addresses.Add(new Address { AddressId = 6, Name = \"Adres6\" });\n" + " addresses.Add(new Address { AddressId = 7, Name = \"Adres7\" });\n\n" + " return addresses.Filter(filter);\n" + " }\n" + " [WebMethod(true)]\n" + " public static object GetPhones(KsFilterParams filter)\n" + " {\n" + " var phones = new List<Phone>();\n\n" + " phones.Add(new Phone { AddressId = 1, DistrictId = 1, PhoneId = 1, Number = \"11\" });\n" + " phones.Add(new Phone { AddressId = 1, DistrictId = 1, PhoneId = 2, Number = \"22\" });\n" + " phones.Add(new Phone { AddressId = 2, DistrictId = 1, PhoneId = 3, Number = \"33\" });\n" + " phones.Add(new Phone { AddressId = 3, DistrictId = 2, PhoneId = 4, Number = \"44\" });\n" + " phones.Add(new Phone { AddressId = 2, DistrictId = 1, PhoneId = 5, Number = \"55\" });\n" + " phones.Add(new Phone { AddressId = 4, DistrictId = 3, PhoneId = 6, Number = \"66\" });\n" + " phones.Add(new Phone { AddressId = 6, DistrictId = 7, PhoneId = 7, Number = \"77\" });\n\n\n" + " return phones.Filter(filter);\n" + " }\n\n" + " struct ComboData\n" + " {\n" + " public int Id { get; set; }\n" + " public string Text { get; set; }\n" + " }\n\n" + " [WebMethod(true)]\n" + " public static string GetComboData()\n" + " {\n" + " var data = new List<ComboData> {\n" + " new ComboData { Id = 1, Text =\"Genel\" },\n" + " new ComboData { Id = 2, Text =\"Özel\" },\n" + " new ComboData { Id = 3, Text =\"Diğer\" }\n" + " };\n\n" + " return data.ToJsonString();\n" + " }\n\n" + " protected void btnNew_Click(object sender, EventArgs e)\n" + " {\n" + " try\n" + " {\n" + " Response.Redirect(\"EF_DEMO_DETAIL.aspx\");\n" + " }\n" + " catch (Exception ex) { this.PublishException(ex); }\n" + " }\n\n" + " protected void grdUsers_ItemCommand(object source, GridCommandEventArgs e)\n" + " {\n" + " var dataItem = e.Item.DataItem as DemoMasterData;\n\n" + " //if (e.CommandName == \"Detail\")\n" + " //{\n" + " // Response.Redirect(string.Format(\"EF_DEMO_DETAIL.aspx?ID={0}\", dataItem.Id));\n" + " //}\n" + " if (e.CommandName == \"Delete\")\n" + " {\n" + " using (var demo = DependencyFactory.Resolve<IDemoService>())\n" + " {\n" + " demo.Delete(dataItem.Id);\n" + " }\n" + " Response.Redirect(\"EF_DEMO.aspx\");\n" + " }\n" + " }\n\n" + " protected void btnSaveAll_Click(object sender, EventArgs e)\n" + " {\n" + " try\n" + " {\n" + " //this.ShowMessage(\"errTest\", KocSistem.LeasingCommon.MessageSeverity.Error);\n" + " string x = null;\n" + " var length = x.Length;\n\n" + " using (var demo = DependencyFactory.Resolve<IDemoService>())\n" + " {\n" + " var identityNumber = demo.GetAll().Max(u => u.Identity_Number);\n\n" + " var users = new List<DemoMasterData>();\n" + " users.Add(new DemoMasterData { Identity_Number = ++identityNumber, NameSurname = \"1\" });\n" + " users.Add(new DemoMasterData { Identity_Number = ++identityNumber, NameSurname = \"2\" });\n" + " users.Add(new DemoMasterData { Identity_Number = ++identityNumber, NameSurname = \"3\" });\n" + " users.Add(new DemoMasterData { Identity_Number = ++identityNumber, NameSurname = \"4\" });\n" + " demo.SaveAll(users);\n" + " }\n" + " }\n" + " catch (Exception ex)\n" + " {\n" + " if (chkHandleExc.Checked)\n" + " {\n" + " this.PublishException(ex);\n" + " return;\n" + " }\n\n" + " throw; \n" + " }\n" + " }\n\n" + " protected void btnWordToPdf_Click(object sender, EventArgs e)\n" + " {\n" + " try\n" + " {\n" + " var application = new Microsoft.Office.Interop.Word.Application();\n" + " var document = application.Documents.Open(txtWordPath.Text);\n" + " document.Activate();\n" + " var pdfName = \"TestPDF_\" + DateTime.Now.ToString(\"yyyyMMddHHmmss\") + \".pdf\";\n" + " document.SaveAs2(Server.MapPath(ReportingUtility.ExcelTempPath + pdfName), Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatPDF);\n" + " document.Close();\n\n" + " OpenPopup(Request.GetApplicationPath() + \"/Reporting/Temporary/\" + pdfName);\n" + " }\n" + " catch (Exception ex)\n" + " {\n" + " this.PublishException(ex);\n" + " }\n" + " }\n" + " }\n" + "}"; final Pattern pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE); 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