Java URL Value Check isValid(String url)

Description

is Valid

License

Open Source License

Declaration

public static boolean isValid(String url) 

Method Source Code

//package com.java2s;
/******************************************************************************* 
 * Copyright (c) 2012-2016 Red Hat, Inc. 
 * Distributed under license by Red Hat, Inc. All rights reserved. 
 * This program is made available under the terms of the 
 * Eclipse Public License v1.0 which accompanies this distribution, 
 * and is available at http://www.eclipse.org/legal/epl-v10.html 
 * //  w w  w.ja v  a  2s  .c o  m
 * Contributors: 
 * Red Hat, Inc. - initial API and implementation 
 ******************************************************************************/

import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;

import java.util.regex.Pattern;

public class Main {
    private static final Pattern SIMPLE_URL_PATTERN = Pattern
            .compile("(\\w+://)(.+@)*([\\w\\d\\.]+)(:[\\d]+){0,1}/*(.*)");

    public static boolean isValid(String url) {
        // Test via regex first. If passes then check via new URL(url) and URI(url) which are slower
        if (SIMPLE_URL_PATTERN.matcher(url).matches()) {
            try {
                new URI(url);
                new URL(url);
            } catch (MalformedURLException | URISyntaxException e) {
                return false;
            }
            return true;
        }
        return false;
    }
}

Related

1. isUrlInJar(URL url)
2. isUrlResponding(String url)
3. isUrlValid(final URL url)
4. isUrlValid(URL url)
5. isValid(String candidateUrl)
6. isValidChannelUrl(String url)
7. isValidServerURL(String serverURL)
8. isValidSuccessfulSignInURL(String url)
9. isValidURL(CharSequence urlStr)