public void readFile(String fileName) {
		FileInputStream fileIS;
		BufferedInputStream bufferedIS;
		DataInputStream dataIS;

		try {
			fileIS = new FileInputStream(fileName);
			bufferedIS = new BufferedInputStream(fileIS);
			dataIS = new DataInputStream(bufferedIS);
			System.out.println("Reading file: " + fileName);
			try {
				while(true) {
					/*
					 * reads one input byte, zero-extends it to type int, and
					 * returns the result, which is therefore in the range 0
					 * through 255.
					 */

					int mbyte = dataIS.readUnsignedByte();
				}
			}
			catch (EOFException eof) {
				System.out.println( "Finished reading file" );
			}
			dataIS.close();
		}
		catch (FileNotFoundException e) {
			System.out.println("Error: File not found");
		}
		catch (IOException e) {
			System.out.println("IO error: " + e );
		}
	}