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 single character of: a, b, c or d
    [[ab][cd]]
  • 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]
  • Character class intersection
    [\w&&[^\d]]
  • 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 = "mat-column-(\\w+)[^>]*>(?:<[^>]*>)*([^<]*)"; final String string = "<mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"6%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-status mat-column-status ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 6%;\"><mat-icon _ngcontent-ifd-c336=\"\" role=\"img\" class=\"mat-icon notranslate mat-tooltip-trigger material-icons app-list-icon-yellow mat-icon-no-color\" aria-hidden=\"true\" data-mat-icon-type=\"font\" aria-describedby=\"cdk-describedby-message-1\" cdk-describedby-host=\"\"> info </mat-icon><!----><!----></mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"8%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-taskObjectExternalId mat-column-taskObjectExternalId ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 8%;\"><a _ngcontent-ifd-c336=\"\" href=\"/applications/tab/customer-tab?id=103085\"> 101010 </a></mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"12%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-type mat-column-type ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 12%;\"><section _ngcontent-ifd-c336=\"\" fxflex=\"100%\" fxlayout=\"row wrap\" style=\"flex-flow: wrap; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 100%;\"><span _ngcontent-ifd-c336=\"\" fxflex=\"100%\" fxlayoutalign=\"left center\" class=\"extra-info\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 100%;\"> WBSO 2023 </span><span _ngcontent-ifd-c336=\"\" fxflex=\"100%\" fxlayoutalign=\"left center\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 100%;\"> Customer approval <!----><!----></span></section></mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"15%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-customerName mat-column-customerName ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 15%;\"> Example customer </mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"10%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-creationDate mat-column-creationDate ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 10%;\"> 16 Days ago </mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"10%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-deadLine mat-column-deadLine ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 10%;\"><!----><span _ngcontent-ifd-c336=\"\" class=\"ng-star-inserted\"> 4 Days left </span><!----><!----><!----><!----><!----></mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"10%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-createdBy mat-column-createdBy ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 10%;\"> </mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"8%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-reminderSent mat-column-reminderSent ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 8%;\"> 0 </mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"8%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-lastModifiedDate mat-column-lastModifiedDate ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 8%;\"> </mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"7%\" fxlayoutalign=\"left center\" class=\"mat-cell cdk-cell cdk-column-visible mat-column-visible ng-star-inserted\" style=\"place-content: center flex-start; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 7%;\"><mat-icon _ngcontent-ifd-c336=\"\" role=\"img\" class=\"mat-icon notranslate material-icons mat-icon-no-color ng-star-inserted\" aria-hidden=\"true\" data-mat-icon-type=\"font\"> visibility_on </mat-icon><!----><!----></mat-cell><mat-cell _ngcontent-ifd-c336=\"\" role=\"cell\" fxflex=\"5%\" fxlayoutalign=\"end center\" class=\"mat-cell cdk-cell cdk-column-actions mat-column-actions ng-star-inserted\" style=\"place-content: center flex-end; align-items: center; flex-direction: row; box-sizing: border-box; display: flex; flex: 1 1 100%; max-width: 5%;\"><button _ngcontent-ifd-c336=\"\" mat-icon-button=\"\" class=\"mat-focus-indicator mat-menu-trigger mat-icon-button mat-button-base\" aria-haspopup=\"true\"><span class=\"mat-button-wrapper\"><mat-icon _ngcontent-ifd-c336=\"\" role=\"img\" class=\"mat-icon notranslate material-icons mat-icon-no-color\" aria-hidden=\"true\" data-mat-icon-type=\"font\">settings</mat-icon></span><span matripple=\"\" class=\"mat-ripple mat-button-ripple mat-button-ripple-round\"></span><span class=\"mat-button-focus-overlay\"></span></button><!----><mat-menu _ngcontent-ifd-c336=\"\" class=\"ng-star-inserted\"><!----></mat-menu></mat-cell><!---->"; 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