is Url by Regex - Java java.util.regex

Java examples for java.util.regex:Match URL

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Description

is Url by Regex

Demo Code


//package com.java2s;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {

    public static final String URL = "^(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*)*)$";

    public static boolean isUrl(String str) {
        return Regular(str, URL);
    }//w w  w  .  j ava2  s  .c  o  m

    private static boolean Regular(String str, String pattern) {
        if (null == str || str.trim().length() <= 0)
            return false;
        Pattern p = Pattern.compile(pattern);
        Matcher m = p.matcher(str);
        return m.matches();
    }
}

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