Java File IO getCanonicalFile() handling Linux Symbolic links

Does anyone have any experience using the File.getCanonicalFile() method. I would prefer to use the getCanonicalFile() to obtain the real file pointed to by a symbolic link, rather than the Linux "ls" command.
I currently check for any changes by executing a "ls" every second,when I test the getCanonicalFile() method, I see he doesn't seem to keep up with the real situation on the FileSystem ?
Example:
2009-04-28 13:56:57:575 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135651 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135627
2009-04-28 13:56:58:569 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135651 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135627
2009-04-28 13:56:59:594 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135651 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135627
2009-04-28 13:57:00:592 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135651 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135627
2009-04-28 13:57:01:543 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135651 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135627
2009-04-28 13:57:02:503 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135701 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135627
2009-04-28 13:57:04:058 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135701 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135627
2009-04-28 13:57:04:460 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135701 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135627
2009-04-28 13:57:05:526 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135701 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135701
2009-04-28 13:57:06:546 [00000] TEST: ls file=/ama/log/PPT/ape/feAPE_090428_135701 getCanonicalFile()=/ama/log/PPT/ape/feAPE_090428_135701
Thx.

Hi ejp, nice picture :) .
The task:
Trying to count specific records in a log file (A type of modified Linux tail). I've tried to use the symbolic name as the original filename (FileInputStream) but when the file gets switched (link deleted and recreated) the fileDescriptor knows nothing about the new file, no changes are ever seen.
So basically, how can I track the latest "real" log file ? I'm using "ls" every iteration, If the filename changes, I close the current stream and open new one?
I've also tested using "new File(...)" and using a Filter on the list output but this is slower than the "ls". I hoped getCannonicalFile() was the answer.
            // Close the current Buffered Input stream
            is.close();
            // Open a new buffered input stream with the NEW Filename
            is = new BufferedInputStream(new FileInputStream(filename));
            // Log the details of the found file
            sp.getLog().msg(clientBean.getPort(), "Tracking new filename: " + filename + " InputStream Found available to read: " + is.available());
            // Connect the Input stream to a Data input stream
           dis = new DataInputStream(is);

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