java regular expression example

Here are some examples of possible regular expressions:/^ \ [\ t] * $/"^ \ [\ t] * $" matches a vacant row. /\ D {2}-\ d {5}/"\ d {2}-\ d {5}" verify that an ID number consists of two characters, A hyphen and a five-digit combination. /(. *). * \/\ 1/ Here are some examples of regular expressions that may be encountered:/^ \ [\ T] * $/'^ \ [\ t] * $' matches a vacant row./\ D {2}-\ d {5}/'\ d {2}-\ d {5}' v

--java Training, Android training, iOS training,. NET training look forward to sharing with you! ——Regular Expression 1. Basic Regular ExpressionsThe so-called regular expression is the use of a series of predefined special charac

Several Methods for getting simple HTML Tag content Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->// ==================================== Begin1 ====================== ========== // Test string String strtmp = string. empty; // Regular Expression String tmpstr = string. empty; // Retrieve the value of the matching item in the specified HTML Tag. regexopt

PowerShell Regular Expression (Regex) Example of matching method code from right to left This article mainly introduces the PowerShell Regular Expression (Regex) from right to left for matching method code examples. The most important thing is the use of the RightToLeft par

1,linux The difference between the shell regular expression * and the + numberExample Memory:[email protected] data]# Touch test.txt[Email protected] data]# cat>>test.txt> Gooood> Goood> Good> God> GD> EOF* indicates repeating the preceding character 0 or more times[[email protected] data]# grep "Go*d" test.txtGoooodGooodGoodGodGd+ means repeating the preceding character 1 or more times[Email protected] dat

Example of php regular expression verification email address and email extraction If (ereg ('/^ [a-z] ([a-z0-9] * [-_ \.]? [A-z0-9] +) * @ ([a-z0-9] * [-_]? [A-z0-9] +) + [\.] [a-z] {2, 3} ([\.] [a-z] {2 })? $/I; ", $ email )){ Echo "Your email address is correct !";} Else { Echo "Please try again !"; } ?>

Tags: sed replacementLinux正则表达式结合三剑客实例Case one:Take the IP of the inet addr in the ifconfig eth0Law one: ifconfig eth0|sed-n ' 2p ' |sed-n ' s#^. dr:# #gp ' |sed-n ' s# B. $# #gp 'Law II: Ifconfig eth0|sed-n ' 2s#^. dr:# #gp ' |sed-n ' s# B. $# #gp 'Law III (back Reference): Ifconfig eth0|sed-nr ' 2s#^. DR: (.) B.*$#\1#GP 'Exercise method Three: Need to be aware of sed:-e expression #1, char 25:unmatched (or (indicates the need to escapeLinux

This article mainly introduces an example of the replace method for JavaScript string objects. The replace method is used for string replacement and supports regular expression replacement. For more information, see JavaScript replace Method The replace method is used to replace some strings with other strings, or replace strings that match the

$sub = "bbs.it-home.org"; $PTN = '/\w*\.\w*\.\w*/'; Regular expressions, meta-data, returned data Preg_match ($PTN, $sub, $mats); echo ""; Print_r ($mats); echo ""; ?> Matching IP $STR = "My IP is 192.168.10.1sdjlfajdf192.178.39.4la"; $PTN = '/\d+\.\d+\.\d+\.\d+/'; Preg_match_all ($PTN, $str, $mats); echo ""; Print_r ($mats); echo ""; ?>

The original is here: Poke6 parametersThe first one is the string enteredThe second one is the regular expressionThe third one is the substituted characterThe fourth is to identify a regular expression match starting from the first few characters. (Default is 1)The fifth one is to identify the first few matching groups. (default to replace All)The sixth one is th

The original in this pokeRegexp_instr6 parametersThe first one is the string enteredThe second one is the regular expressionThe third is to identify a regular expression match starting from the first few characters. (Default is 1)The fourth one is to identify the first few matching groups. (Default is 1)The fifth is the type that specifies the return value, and i

Using system; Using system. Collections. Generic; Using system. text; Using system. Text. regularexpressions; Namespace string { Class Regular Expression { Public static void main () { // Regular expressions are used to simplify string operations. Generally, the functions implemented by regular expressions

This article mainly introduces the data verification function of JavaScript using simple regular expressions, and analyzes the simple regular expression verification operation skills of JS for form input content in combination with the example form, for more information about how to use a simple

$str = Preg_quote ("/\d{3} (\-\d{4})/"); Echo $str; ?> Copy CodeResults:/\\d\{3\}\ (\\\-\\d\{4\}\)/Example 2: $str = Preg_quote ("/\d{3} (\-\d{4})/", "3"); Echo $str; ?> Copy CodeResults:/\\d\{\3\}\ (\\\-\\d\{4\}\)/The difference between the two examples: "3" in the red area, and "3" in the second example. PHP escape character function php

Objective Regular expression is cumbersome, but powerful, after the application of learning will let you in addition to improve efficiency, will give you a sense of absolute achievement. As long as the careful reading of these materials, coupled with the application of a certain reference, master regular expression is

Eclipse Regular Expression plug-in myregexp First, we recommend an Eclipse plug-in for Java regular expressions, Download from http://myregexp.com/eclipsePlugin.html Body Conversion from http://dev.csdn.net/htmls/85/85006.html The regular

The One, overview Regular expression is an important tool for Java to process strings and text. Java's handling of regular expressions is concentrated in the following two classes: java.util.regex.matcher mode class : The is used to represent a compiled regular

* number.For example: 18369905102 becomes 183*****102Mode used: "(\\d{3}) (\\d{4}) (\\d{4})"Code:1 Private Static void ReplaceDemo3 () {2 String str= "13991716243"; 3 String regex= "(\\d{3}) (\\d{4}) (\\d{4})"; 4 Str=str.replaceall (Regex, "$1****$3"); 5 System.out.println (str); 6 }View CodeRunning Result: 139****62434. Access.The acquisition of regular expressions can