private boolean processFile(boolean vigenere)
	{
		boolean success=true;

		if(processFileName()) // verify file name processing was successful
		{
			String outFile =fileName.substring(0, fileName.length()-1) + outType + ".txt";
			try
			{
				FileReader fr = new FileReader(file);
				FileWriter fw = new FileWriter(outFile);
				Scanner s = new Scanner(fr);

				while (s.hasNextLine())
				{

					String[] line = s.nextLine().split(" ");	// read file line by line, each line as an array of words

					for (int i = 0; i < line.length; i++) 	// parse individual words
					{
						String word = line[i];
						for (int j = 0; j < word.length(); j++) // process each char in each word
						{
							char c = word.charAt(j);
							if (isUpper("" + c)) // only upper case alphabetical characters get converted by cipher operation
							{
								c = cipherOp(vigenere, encode, c);	// perform cipher operation
								lfreq.addChar(c);	// add character to letter frequency tallies
							}
							fw.write(c);	// write character to file
						}
						fw.write(" ");	// add space between each word
					}
					fw.write("\r\n");		// EOL character between each line
				}
				fw.close();		// close and save output file when all lines from input file have been processed
				fr.close();
				s.close();
			}
			catch (IOException ioe) {
				JOptionPane.showMessageDialog(null, "File not found. Ensure file name is correct and file is in appropriate directory.");
				success = false;
			}
		}

		return success;
	}