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path of a class

4 replies on 1 page. Most recent reply: Sep 14, 2005 10:27 PM by Matthias Neumair

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Matthias Neumair

Posts: 660
Nickname: neumi
Registered: Sep, 2003

path of a class

Posted: Sep 6, 2005 3:44 AM

Is there a way I can geet the directory where a class file lies?
Something like getAbsoluteFilePath(class)?

I need to read a file wich lies in the same dir as the class.
The program must be callable from any directory, so currentDir or something similar does not work.

Amol Brid

Posts: 43
Nickname: amolbrid
Registered: Feb, 2004

Re: path of a class

Posted: Sep 6, 2005 4:03 AM

Is this ur looking for?

public String getAbsoluteFilePath(String className) {
	String currentDir = System.getProperty("user.dir");
	String pathSep = System.getProperty("file.separator");
	return currentDir + pathSep + className.replace('.', pathSep.charAt(0));
}

Regards,
Amol Brid

Matthias Neumair

Posts: 660
Nickname: neumi
Registered: Sep, 2003

Re: path of a class

Posted: Sep 6, 2005 5:19 AM

Not really.

Maybe I didn't explain it good enough.

Assume that the classes or the jar file lies in c:\myprogram\

In this dir I have the run file called run.cmd wich basically launches the java program.

Opening a command shell I change dir to c:\runtest\

Here I type "c:\myprogram\run.cmd"

The result of the getProgramPath method should be "c:\myprogram\", but it is "c:\runtest", since I did not change directory.

The reason for all this is that I want to read some .ini settings from a file stored in the same dir as the jar file, but don't want to change dir.

Jeff Thomson

Posts: 14
Nickname: thomson
Registered: Sep, 2005

Re: path of a class

Posted: Sep 14, 2005 5:35 AM

If the directory is already in classpath you can get the resource(ini file) directly by using getResource(resourceName) method of ClassLoader. This will return the URL of the resource from which you can open a stream for doing your operations.

----------------
Jeff Thomson
http://www.devsquare.com
Online Application Development

Matthias Neumair

Posts: 660
Nickname: neumi
Registered: Sep, 2003

Re: path of a class

Posted: Sep 14, 2005 10:27 PM

Thanks, sounds promising. I'll try that.

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