Empty file when writing?

I'm trying to write to a file, using this:
double rnd = 100000 * Math.random();
int trackingID = (int)rnd;
out.println(trackingID);
try
     File datafile = null;
     datafile = new File("notifier.log");
     PrintWriter dataout = new PrintWriter(new FileWriter(datafile));
     dataout.println(trackingID + "|");
     dataout.close();
     catch(IOException ioExc)
     out.println("error writing file");
For some reason, it returns no error, but my file remains empty. I tried adding something to the file, thinking if it's empty, it might not write to it, and no help.
Anyone have any ideas?
The file is in the same directory as the jsp.
Thanks!!

What you want to do - solution
Use request.getPathTranslated() to get the path of your JSP. Parse out the name of the JSP to get the folder in which the JSP is put.
What I would have done - Better Solution
IMO placing files in the same folder is bad design and my logic will bomb in most J2EE server if you deploy your application as a war. Why dont u define the folder name in your web.xml as a context parameter instead?

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generate_test_bin_data.vi ‏12 KB

Empty file when writing?

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