Java URLConnection Create openConnectionTo(URL descriptor)

Description

Checks that descriptor exist, is a file and is readable

License

Open Source License

Parameter

Parameter	Description
descriptor	The File to be checked

Exception

Parameter	Description
IllegalArgumentException	If the File is does not exist, is not a file or is not readable

Declaration

public static URLConnection openConnectionTo(URL descriptor)
        throws IllegalArgumentException 

Method Source Code

//package com.java2s;
/*//from  w  w w.ja v a  2 s  .c  o m
 * ################################################################
 *
 * ProActive Parallel Suite(TM): The Java(TM) library for
 *    Parallel, Distributed, Multi-Core Computing for
 *    Enterprise Grids & Clouds
 *
 * Copyright (C) 1997-2012 INRIA/University of
 *                 Nice-Sophia Antipolis/ActiveEon
 * Contact: proactive@ow2.org or contact@activeeon.com
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation; version 3 of
 * the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *
 * If needed, contact us to obtain a release under GPL Version 2 or 3
 * or a different license than the AGPL.
 *
 *  Initial developer(s):               The ProActive Team
 *                        http://proactive.inria.fr/team_members.htm
 *  Contributor(s):
 *
 * ################################################################
 * $$PROACTIVE_INITIAL_DEV$$
 */

import java.io.IOException;

import java.net.URL;
import java.net.URLConnection;

public class Main {
    /**
     * Checks that descriptor exist, is a file and is readable
     * 
     * @param descriptor
     *            The File to be checked
     * @throws IllegalArgumentException
     *             If the File is does not exist, is not a file or is not readable
     */
    public static URLConnection openConnectionTo(URL descriptor)
            throws IllegalArgumentException {
        URLConnection conn;
        try {
            conn = descriptor.openConnection();
        } catch (IOException e) {
            throw new IllegalArgumentException("Connection to "
                    + descriptor.toExternalForm()
                    + " could not be established.", e);
        }

        return conn;
    }
}

Related

1. openConnection(URL url)
2. openConnection(URL url)
3. openConnection(URL url)
4. openConnection(URL url)
5. openConnectionForceNoProxy(URL url)
6. openInputStream(URL url)
7. openURL(String url)
8. openURLStream(final URI uri)