Java URL Create convertToURLs(String[] hosts)

Description

Convert a set of host path statements to formal urls.

License

Apache License

Parameter

Parameter	Description
hosts	the set of host names

Return

the equivalent URL array

Declaration

public static URL[] convertToURLs(String[] hosts) 

Method Source Code

//package com.java2s;
/* //from w  w  w.  j av  a  2 s  .  co m
 * Copyright 2004 Apache Software Foundation
 * 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.URL;

import java.util.ArrayList;

public class Main {
    /**
     * Convert a set of host path statements to formal urls.
     * @param hosts the set of host names
     * @return the equivalent URL array
     */
    public static URL[] convertToURLs(String[] hosts) {
        ArrayList list = new ArrayList();
        for (int i = 0; i < hosts.length; i++) {
            URL url = convertToURL(hosts[i]);
            if (url != null)
                list.add(url);
        }
        return (URL[]) list.toArray(new URL[0]);
    }

    /**
     * Convert a path to a url.
     * @param host the host address
     * @return the equivalent url
     * @exception IllegalArgumentException if the path cannot 
     *   be converted to a url
     */
    public static URL convertToURL(String host) throws IllegalArgumentException {
        try {
            return new URL(host);
        } catch (Throwable e) {
            final String error = "Unable to convert a supplied host spec to a url: " + host;
            throw new IllegalArgumentException(error);
        }
    }
}

Related

1. constructURLQueryString(Map urlParameters)
2. constructURLString(Map parameters)
3. convertToURL(String host)
4. convertToURL(String url)
5. convertToUrl(String[] paths)
6. createURL(final String address)
7. createURL(final String protocol, final String userInfo, final String host, final int port, final String path, final String query, final String ref)
8. createUrl(final String spec)
9. createURL(final String url)