Re: path to exectuable

From:

"Allan M. Bruce" <allanmb@TAKEAWAYdsl.pipex.com>

Newsgroups:

comp.lang.java.help

Date:

Thu, 18 May 2006 11:42:14 +0100

Message-ID:

<7KGdnfVdSt0f0vHZRVnyjg@pipex.net>

"CR" <nobody@nowhere.com> wrote in message
news:52Oag.3821$uM4.3054@tornado.socal.rr.com...

Hey all --

Anyone know how to retrieve the absolute path to the currently running
exectuable from within Java? Something like this is what I wanna do....

String s = GetExecutablePath();

System.out.println("Path is " + s);

And the output would be...

"Path is /opt/mydirectory/myexectuable.exe".

Been searching the API docs and web, to no avail. Thanks for any help.

CR

There is no single way AFAIK since you could be running from a jar file or
from classes directly, or even remotely! I use this which seems to work
most of the time but fails under some circumstances - cant remember which
ones!

Allan

    public static String getMainDir()
    {
        if (Core.class.getProtectionDomain().getCodeSource() == null)
            return null;

        File baseDir;

        try
        {
            URI sourceURI = new
URI(Core.class.getProtectionDomain().getCodeSource().getLocation().toString());
            baseDir = new File(sourceURI);
        }
        catch (Exception e)
        {
            // XXX - might be running from a jar file?
            return null;
        }

        if (!baseDir.isDirectory())
            return null;

        String[] classComponents = MorvenGUI.class.getName().split("\\.");

        for (int i = 0; i < classComponents.length - 1; i++)
        {
            baseDir = new File(baseDir, classComponents[i]);
        }

        return baseDir.getAbsolutePath();
    }