Java exec execute(String url)

Description

Tries to launch the application associated to the file..

License

Open Source License

Parameter

Parameter	Description

Declaration

public static void execute(String url) 

Method Source Code

//package com.java2s;
/*//from  w  ww . ja v a 2  s .  c  o  m
 * GraphicUtils.java - SEdit, a tool to design and animate graphs in MadKit
 * Copyright (C) 1998-2002 Jacques Ferber, Olivier Gutknecht
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * 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 Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser 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
 */

import java.io.*;

public class Main {
    private static final String WIN_ID = "Windows";
    private static final String WIN_PATH = "rundll32";
    private static final String WIN_FLAG = "url.dll,FileProtocolHandler";
    private static final String UNIX_PATH = "konqueror";
    private static final String UNIX_FLAG = "-remote openURL";

    /**
     * Tries to launch the application associated to the file..
     * 
     * @param url:
     *            the name of the file to be executed
     */
    public static void execute(String url) {
        boolean windows = isWindowsPlatform();
        String cmd = null;
        try {
            if (windows) {
                // cmd = 'rundll32 url.dll,FileProtocolHandler http://...'
                cmd = WIN_PATH + " " + WIN_FLAG + " " + url;
                Process p = Runtime.getRuntime().exec(cmd);
            } else {
                // Under Unix, Netscape has to be running for the "-remote"
                // command to work. So, we try sending the command and
                // check for an exit value. If the exit command is 0,
                // it worked, otherwise we need to start the browser.
                // cmd = 'netscape -remote openURL(http://www.javaworld.com)'
                cmd = UNIX_PATH + " " + UNIX_FLAG + "(" + url + ")";
                Process p = Runtime.getRuntime().exec(cmd);
                try {
                    // wait for exit code -- if it's 0, command worked,
                    // otherwise we need to start the browser up.
                    int exitCode = p.waitFor();
                    if (exitCode != 0) {
                        // Command failed, start up the browser
                        // cmd = 'netscape http://www.javaworld.com'
                        cmd = UNIX_PATH + " " + url;
                        p = Runtime.getRuntime().exec(cmd);
                    }
                } catch (InterruptedException x) {
                    System.err.println("Error bringing up application, cmd='" + cmd + "'");
                    System.err.println("Caught: " + x);
                }
            }
        } catch (IOException x) {
            // couldn't exec browser
            System.err.println("Could not invoke application, command=" + cmd);
            System.err.println("Caught: " + x);
        }
    }

    /**
     * Try to determine whether this application is running under Windows or
     * some other platform by examing the "os.name" property.
     * 
     * @return true if this application is running under a Windows OS
     */
    public static boolean isWindowsPlatform() {
        String os = System.getProperty("os.name");
        if (os != null && os.startsWith(WIN_ID))
            return true;
        else
            return false;
    }
}

Related

1. execute(String cmd, String input)
2. execute(String command)
3. execute(String command)
4. execute(String command)
5. execute(String command, Process p, String[] output, boolean cmdStatus)
6. execute(String... cmdarray)
7. execute(String... command)
8. execute(String... commands)
9. execute(String[] _command, String _workingDir)