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

/
/
gms

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 = ",\\s*(\"subresource_uris\":.[^\\}]*[\\}])"; final String string = "{\n" + " \"first_page_uri\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?PageSize=1000&Page=0\",\n" + " \"end\": 387,\n" + " \"previous_page_uri\": null,\n" + " \"uri\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?PageSize=1000&Page=0\",\n" + " \"page_size\": 1000,\n" + " \"start\": 0,\n" + " \"usage_records\": [\n" + " {\n" + " \"category\": \"wireless-usage\",\n" + " \"description\": \"SIM Usage\",\n" + " \"account_sid\": \"ACd7a7c24a3c7b0b0ddcde452fd6c18aae\",\n" + " \"start_date\": \"2023-01-01\",\n" + " \"end_date\": \"2023-01-31\",\n" + " \"as_of\": \"2023-02-05T06:53:40+00:00\",\n" + " \"count\": \"0\",\n" + " \"count_unit\": \"units\",\n" + " \"usage\": \"0\",\n" + " \"usage_unit\": \"units\",\n" + " \"price\": \"0\",\n" + " \"price_unit\": \"usd\",\n" + " \"api_version\": \"2010-04-01\",\n" + " \"uri\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?Category=wireless-usage&StartDate=2023-01-01&EndDate=2023-01-31\",\n" + " \"subresource_uris\": {\n" + " \"all_time\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/AllTime.json?Category=wireless-usage\",\n" + " \"today\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Today.json?Category=wireless-usage\",\n" + " \"yesterday\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Yesterday.json?Category=wireless-usage\",\n" + " \"this_month\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/ThisMonth.json?Category=wireless-usage\",\n" + " \"last_month\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?Category=wireless-usage\",\n" + " \"daily\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Daily.json?Category=wireless-usage\",\n" + " \"monthly\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Monthly.json?Category=wireless-usage\",\n" + " \"yearly\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Yearly.json?Category=wireless-usage\"\n" + " }\n" + " },\n" + " {\n" + " \"category\": \"pv-basic-rooms\",\n" + " \"description\": \"Go Rooms\",\n" + " \"account_sid\": \"ACd7a7c24a3c7b0b0ddcde452fd6c18aae\",\n" + " \"start_date\": \"2023-01-01\",\n" + " \"end_date\": \"2023-01-31\",\n" + " \"as_of\": \"2023-02-05T06:53:40+00:00\",\n" + " \"count\": \"0\",\n" + " \"count_unit\": \"\",\n" + " \"usage\": \"0\",\n" + " \"usage_unit\": \"\",\n" + " \"price\": \"0\",\n" + " \"price_unit\": \"usd\",\n" + " \"api_version\": \"2010-04-01\",\n" + " \"uri\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?Category=pv-basic-rooms&StartDate=2023-01-01&EndDate=2023-01-31\",\n" + " \"subresource_uris\": {\n" + " \"all_time\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/AllTime.json?Category=pv-basic-rooms\",\n" + " \"today\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Today.json?Category=pv-basic-rooms\",\n" + " \"yesterday\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Yesterday.json?Category=pv-basic-rooms\",\n" + " \"this_month\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/ThisMonth.json?Category=pv-basic-rooms\",\n" + " \"last_month\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?Category=pv-basic-rooms\",\n" + " \"daily\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Daily.json?Category=pv-basic-rooms\",\n" + " \"monthly\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Monthly.json?Category=pv-basic-rooms\",\n" + " \"yearly\": \"/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Yearly.json?Category=pv-basic-rooms\"\n" + " }\n" + " },\n" + " "; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.DOTALL); 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