public void removeLineFromFile(String file, String lineToRemove)
     {
         try
         {
              File inFile = new File(file);
              if (!inFile.isFile())
              {
                System.out.println("Parameter is not an existing file");
                return;
              }
              //Construct the new file that will later be renamed to the original filename.
              File tempFile = new File(inFile.getAbsolutePath() + ".tmp");
              BufferedReader br = new BufferedReader(new FileReader(file));
              PrintWriter pw = new PrintWriter(new FileWriter(tempFile));
              String line = null;

              //Read from the original file and write to the new
              //unless content matches data to be removed.
              while ((line = br.readLine()) != null)
              {
                if (!line.trim().equals(lineToRemove))
                {
                  pw.println(line);
                  pw.flush();
                }
              }
              pw.close();
              br.close();
              
              //Delete the original file
              if (!inFile.delete())
              {
                System.out.println("Could not delete file");
                return;
              }
              
              //Rename the new file to the filename the original file had.
              if (!tempFile.renameTo(inFile))
                System.out.println("Could not rename file");
              
         }
         catch (FileNotFoundException ex) {
              ex.printStackTrace();
         }
         catch (IOException ex) {
              ex.printStackTrace();
         }
    }