Remember File Structure on subsequent openings

[rru96]

I have a program I am working on, and have been using the following code:

private void checkQInstall(){
		try {
			qs = new File("C:\\MEMORYGAME\\q.bin");
			in = new BufferedReader(new FileReader(qs));
		} catch (FileNotFoundException e) {
			System.out.println("CALLED");
			dir1 = new File("C:\\MEMORYGAME\\");
			dir1.mkdirs();
			
			try {
				out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("C:\\MEMORYGAME\\q.bin")));
				
			} catch (FileNotFoundException e1) {
				System.out.println("FAILED TO CREATE FILE STRUCTURE");
				System.exit(0);
			}
		}
	}

Now my main issue is I am working on a project that could be used on a variety of systems. I understand that Java is designed for flexibility among OS's and that the way I have coded is designed for a Windows system (afaik). Can someone help point me in a direction on how to retain an installation directory so that on subsequent openings, the program knows where to open the file, without it being platform dependent. I have never used a mac. Thank you

[SurfMan]

You can find the directory where the program is started from using System.getProperty("user.dir"). From there you can build your paths.

[rru96]

Thank you very much.