java regular expression example

Regular expression knowledge of the series, through the code example to illustrate the regular expression of knowledge, suggest that you follow the example hand to play again. The source code download address for this

View code Package RegEx;Import java. Io. ioexception;Import java. util. RegEx. matcher;Import java. util. RegEx. pattern;/*** Note: matcher is the main operation class of the regular expression. It contains the most important method for extraction and replacement. pattern i

The regular expression defines the link:Http://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html#sumApplication Examples: Count the number of words in a Java string public class Nn {public static void Main (string[] args) {String str= "This is a process";System.out.println (Str.split ("\\s+")

. (COM/CN) is an indefinite number of2. Regular expression: String regx = "\\[email protected]\\w{2,6} (\.[ a-za-z]{2,3}) + ";Analytical:\\w: all letters and numbers; +: The front appears 1 or more times; \\w{2,6}: \\w can only show 2-6\. : ‘.’ this character; [A-za-z]: all the letters; {2,3}: There are only 2-3 letters in front,(\. [A-za-z] {2,3}) +: ' + ' before content appears 1 or more timesAttention:A:

package regular expression; public class Rudolph {public static void main (string[] args) {//TODO auto-generated method stubstring[] Str = new string[]{"Rudolph", "[Rr]udolph", "[rr][aeiou][a-z]ol.*", "r.*"};for (String pattern:str) System.out.println (" Rudolph ". Matches (pattern)); for (String ss:str)//The data in the container str is traversed by one of the data of type String. SYSTEM.OUT.PRINTLN (ss);

Therefore, we need to clarify how many number segments have been opened. The country number segments are allocated as follows:Mobile: 134, 135, 136, 137, 138, 139, 150, 151, 157 (TD), 158, 159, 187, 188China Unicom: 130, 131, 132, 152, 155, 156, 185, 186China Telecom: 133, 153, 180, 189 (1349 Weitong)Now we can test the regular expression matching,Import java. io

For example: from the following stringOpening Hours: 11:30-21:30 Modified category Tags: wireless Internet access (8) can swipe (7) Friends (5) Family Gatherings (5) Business Dinners (4) Couples (4) Bring your own drinks (2 )Acquired in: 11:30-21:30Two digits: two digits-two digits: two digits therefore the regular expression:\\d{2}:\\d{2}-\\d{2}:\\d{2}The specif

1 /**2 * The first line matches the special characters;3 * The second line matches the beginning and the end have spaces;4 * The third line matches the end with a space5 * */6 PrivateBoolean Determinechar (String reqdata, String respdata) {7String reg = "@@|==|--|!| \\!|"8+ "\\s (union|and|or|where|exec|like|from|trancate|char|substr|ascii|count|into) \\s|" +9"\\b (Select|update|delete|insert|trancate|char|alter|substr|ascii|declare|exec|drop) \\s";TenPattern pattern = Pattern.compile (

Examples of the application of Java's regular expressions (see Java's application of the regular Expressions): Test code packagetest;/** * In string matches () method, the split () method uses regular expressions . * @author fhd001 */ publicclassregextest{ public Staticvoidmain (String[]args) { /* * Ordinary characters */ Stringstr1= "abc45abc345"; String

Regular Expression matching, replacement, search, cutting, and JAVA Regular Expression in java Regular Expression search; mainly used in the

At the beginning, you have to say ^ and $ they are used to match the start and end of a string, respectively, as illustrated below If you're a novice, guess you're canceling the regular expression 30 minute introductory tutorial "^the": The beginning must have "the" string; "Of despair$": The end must have a string of "of despair"; So "^abc$": a string that requires the beginning of ABC and the end of ABC,

Java regular expression syntax and java Regular Expression Java regular expression syntax

Example of jQuery regular expression-based form verification function, jquery Regular Expression This document describes jQuery's form verification function based on regular expressions. We will share this with you for your refere

Python uses a regular expression to match the start of a string and print the example. python Regular Expression This example describes how to use a regular

Java -- Regular Expression-simply finding numbers in strings, java -- Regular Expression import org.junit.Test;import java.util.regex.Matcher;import java.util.regex.Pattern;public class RegexTest { @Test public void test(){

, 1} {N} matches the previous expression n times. N is a non-negative integer. {N,} matches the previous expression at least N times. N is a non-negative integer. {N, m} matches the previous expression N-m times, and the NM values are non-negative integers. [] Character class. For example, [123] indicates any num

Java Regular Expression filters html tags and java Regular Expression tags Import java. util. regex. matcher; import java. util. regex. patt

Said so much, I believe that we all understand the use of the above methods, it is said that the regular expression of the grouping in Java is how to use.Start (), End (), group () has an overloaded method that is start (int i), end (int i), group (int i) is dedicated to grouping operations, and the Mathcer class also has a GroupCount () to return the numbe

Java regular expression, Regular ExpressionJava Regular Expression Regular Expression 1. Two classes are provided in the