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]
  • 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
Processing...

Test String

Code Generator

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "Vue[\\s]*\\.[\\s]*component\\(([\"'`].*[\"'`]([\\s]*|.*)),(([\\s]*|.*)+?(\\}\\))[^\\{])"; final String string = "import { ViewIndex } from \"../../../../Utils.js\";\n\n" + "Vue.component('tab-control' , {\n" + " template: ViewIndex.getViewSync(\"tab-control\"),\n\n" + " data() {\n\n" + " return { tabs: this.$children ? this.$children : [] };\n" + " },\n" + " \n" + " created() {\n" + " \n" + " this.tabs = this.$children;\n" + " \n" + " },\n" + " methods: {\n" + " selectTab(selectedTab) {\n" + " this.tabs.forEach(tab => {\n" + " tab.isActive = (tab.name == selectedTab.name);\n" + " });\n" + " }\n" + " \n" + " }\n" + "}\n\n" + ");\n\n" + "Vue.component('tab-page', {\n\n" + " template: `\n\n" + " <div v-show=\"isActive\">\n" + " <slot></slot>\n" + " </div>\n\n" + " `,\n" + " \n" + " props: {\n" + " name: { required: true },\n" + " selected: { default: false },\n\n" + " },\n" + " \n" + " data() {\n" + " \n" + " return {\n" + " isActive: false\n" + " };\n" + " \n" + " },\n\n" + " \n" + " mounted() {\n" + " \n" + " this.isActive = this.selected;\n" + " \n" + " }\n" + "})\n"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE); final Matcher matcher = pattern.matcher(string); if (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