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 = "^\\d{4}-\\d{2}-\\d{2}.*(?:\\n(?!(?:\\d{4}-\\d{2}-\\d{2}|\\h+at)).*)*\\n\\h+at\\h+.*(?:\\n(?!\\d{4}-\\d{2}-\\d{2}).*)*"; final String string = "2019-06-14 15:07:08,142 ThreadPoolAsyncTaskExecutor::Thread 65 ERROR bamboo_user 906x78989x1 vg7ahz 192.168.181.28 /rest/plugins/1.0/bg.nemetschek.jsd.advance-customer-reports-key [o.e.g.b.e.i.dependencies.startup.DependencyWaiterApplicationContextExecutor] Unable to create application context for [bg.nemetschek.jsd.advance-customer-reports], unsatisfied dependencies: none\n" + " org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL [bundle://293.0:0/META-INF/spring/atlassian-plugins-component-imports.xml]; nested exception is java.lang.IllegalStateException: The bundle is uninstalled.\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:414)\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336)\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)\n" + " at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181)\n" + " at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217)\n" + " at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)\n" + " at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:170)\n" + " at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:140)\n" + " at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)\n" + " at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:609)\n" + " at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.access$800(AbstractDelegatedExecutionApplicationContext.java:60)\n" + " at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext$3.run(AbstractDelegatedExecutionApplicationContext.java:242)\n" + " at org.eclipse.gemini.blueprint.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85)\n" + " at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.startRefresh(AbstractDelegatedExecutionApplicationContext.java:220)\n" + " at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageOne(DependencyWaiterApplicationContextExecutor.java:224)\n" + " at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.refresh(DependencyWaiterApplicationContextExecutor.java:177)\n" + " at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:157)\n" + " at org.eclipse.gemini.blueprint.extender.internal.activator.LifecycleManager$1.run(LifecycleManager.java:207)\n" + " at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n" + " at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n" + " at java.lang.Thread.run(Thread.java:748)\n" + " Caused by: java.lang.IllegalStateException: The bundle is uninstalled.\n" + " at org.apache.felix.framework.Felix.getBundleResources(Felix.java:1624)\n" + " at org.apache.felix.framework.BundleImpl.getResources(BundleImpl.java:661)\n" + " at org.eclipse.gemini.blueprint.util.BundleDelegatingClassLoader.getResources(BundleDelegatingClassLoader.java:185)\n" + " at org.springframework.core.io.support.PropertiesLoaderUtils.loadAllProperties(PropertiesLoaderUtils.java:177)\n" + " at org.springframework.beans.factory.xml.DefaultNamespaceHandlerResolver.getHandlerMappings(DefaultNamespaceHandlerResolver.java:155)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins$Plugin.resolve(NamespacePlugins.java:77)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins$5.operate(NamespacePlugins.java:209)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins$5.operate(NamespacePlugins.java:205)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.LazyBundleRegistry.apply(LazyBundleRegistry.java:159)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.doResolve(NamespacePlugins.java:205)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.resolve(NamespacePlugins.java:169)\n" + " ... 2 filtered\n" + " at java.lang.reflect.Method.invoke(Method.java:498)\n" + " at org.eclipse.gemini.blueprint.context.support.TrackingUtil$OsgiServiceHandler.invoke(TrackingUtil.java:106)\n" + " at com.sun.proxy.$Proxy605.resolve(Unknown Source)\n" + " at org.eclipse.gemini.blueprint.context.support.DelegatedNamespaceHandlerResolver.resolve(DelegatedNamespaceHandlerResolver.java:55)\n" + " at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1406)\n" + " at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1401)\n" + " at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:168)\n" + " at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:138)\n" + " at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:94)\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508)\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392)\n" + " ... 20 more\n\n\n\n\n\n" + "2019-06-14 15:07:08,142 ThreadPoolAsyncTaskExecutor::Thread 65 ERROR bamboo_user 906x78989x1 vg7ahz 192.168.181.28 /rest/plugins/1.0/bg.nemetschek.jsd.advance-customer-reports-key [o.e.g.b.e.i.dependencies.startup.DependencyWaiterApplicationContextExecutor] Unable to create application context for [bg.nemetschek.jsd.advance-customer-reports], unsatisfied dependencies: none\n" + " org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL [bundle://293.0:0/META-INF/spring/atlassian-plugins-component-imports.xml]; nested exception is java.lang.IllegalStateException: The bundle is uninstalled.\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:414)\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336)\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)\n" + " at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181)\n" + " at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217)\n" + " at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)\n" + " at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:170)\n" + " at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:140)\n" + " at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)\n" + " at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:609)\n" + " at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.access$800(AbstractDelegatedExecutionApplicationContext.java:60)\n" + " at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext$3.run(AbstractDelegatedExecutionApplicationContext.java:242)\n" + " at org.eclipse.gemini.blueprint.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85)\n" + " at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.startRefresh(AbstractDelegatedExecutionApplicationContext.java:220)\n" + " at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageOne(DependencyWaiterApplicationContextExecutor.java:224)\n" + " at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.refresh(DependencyWaiterApplicationContextExecutor.java:177)\n" + " at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:157)\n" + " at org.eclipse.gemini.blueprint.extender.internal.activator.LifecycleManager$1.run(LifecycleManager.java:207)\n" + " at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n" + " at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n" + " at java.lang.Thread.run(Thread.java:748)\n" + " Caused by: java.lang.IllegalStateException: The bundle is uninstalled.\n" + " at org.apache.felix.framework.Felix.getBundleResources(Felix.java:1624)\n" + " at org.apache.felix.framework.BundleImpl.getResources(BundleImpl.java:661)\n" + " at org.eclipse.gemini.blueprint.util.BundleDelegatingClassLoader.getResources(BundleDelegatingClassLoader.java:185)\n" + " at org.springframework.core.io.support.PropertiesLoaderUtils.loadAllProperties(PropertiesLoaderUtils.java:177)\n" + " at org.springframework.beans.factory.xml.DefaultNamespaceHandlerResolver.getHandlerMappings(DefaultNamespaceHandlerResolver.java:155)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins$Plugin.resolve(NamespacePlugins.java:77)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins$5.operate(NamespacePlugins.java:209)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins$5.operate(NamespacePlugins.java:205)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.LazyBundleRegistry.apply(LazyBundleRegistry.java:159)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.doResolve(NamespacePlugins.java:205)\n" + " at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.resolve(NamespacePlugins.java:169)\n" + " ... 2 filtered\n" + " at java.lang.reflect.Method.invoke(Method.java:498)\n" + " at org.eclipse.gemini.blueprint.context.support.TrackingUtil$OsgiServiceHandler.invoke(TrackingUtil.java:106)\n" + " at com.sun.proxy.$Proxy605.resolve(Unknown Source)\n" + " at org.eclipse.gemini.blueprint.context.support.DelegatedNamespaceHandlerResolver.resolve(DelegatedNamespaceHandlerResolver.java:55)\n" + " at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1406)\n" + " at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1401)\n" + " at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:168)\n" + " at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:138)\n" + " at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:94)\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508)\n" + " at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392)\n" + " ... 20 more"; 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