Java tutorial
//package com.java2s; import java.util.regex.Pattern; public class Main { public static Pattern getUrlPattern() { return Pattern.compile( "^(http|www|ftp|)?(://)?(\\w+(-\\w+)*)(\\.(\\w+(-\\w+)*))*((:\\d+)?)(/(\\w+(-\\w+)*))*(\\.?(\\w)*)(\\?)?(((\\w*%)*(\\w*\\?)*(\\w*:)*(\\w*\\+)*(\\w*\\.)*(\\w*&)*(\\w*-)*(\\w*=)*(\\w*%)*(\\w*\\?)*(\\w*:)*(\\w*\\+)*(\\w*\\.)*(\\w*&)*(\\w*-)*(\\w*=)*)*(\\w*)*)$", Pattern.CASE_INSENSITIVE); } }