Java URL Value Check isUrl(String input)

Description

is Url

License

Apache License

Declaration

public static boolean isUrl(String input) 

Method Source Code

//package com.java2s;
/*// w w  w  .j  a  va 2 s .c  o  m
 * Copyright 2006-2008 Appcelerator, Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 */

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collection;

import java.util.TreeSet;

public class Main {
    public static final Collection<String> TLDS = new TreeSet<String>();

    public static boolean isUrl(String input) {
        String urlString;
        if (input.startsWith("http://")) {
            urlString = input;
        } else {
            urlString = "http://" + input;
        }

        try {
            URL url = new URL(urlString);
            if (!url.getProtocol().startsWith("http")) {
                return false;
            }
            String host = url.getHost();
            String[] hostParts = host.split("\\.");
            return 1 != hostParts.length && TLDS.contains(hostParts[hostParts.length - 1]);
        } catch (MalformedURLException malformedUrlException) {
            return false;
        }
    }
}

Related

1. isResponseCode(String url, int expectedCode)
2. isResponsive(URL url)
3. isSameFile(URL u, File out)
4. isURL(final String urlString)
5. isURL(Object obj)
6. isURL(String name)
7. isURL(String possibleURL)
8. isUrl(String resourceLocation)
9. isUrl(String resourceLocation)