Variable errors

[hellzxmaker]

Hey,

I cannot figure out why the compiler is telling me that it cannot find the variable "output" even though I declared it in a previous method and returned it.

The compiler says "cannot find symbol"
"variable output"
"class Cipher"

import java.io.*;

/**
 * @(#)Cipher.java
 *
 *
 * @author
 * @version 1.00 2010/10/21
 */

public class Cipher {

   public static void main(String[] args) {
   		header(); // Displays header for program
   		userInterface(); //Prompts user to determine action, input encryption key, and manipulates the file

   	}
		/**
		 *Outputs the header of the program
		 */
   		public static void header() {
   			System.out.println("Welcome to Cipher");
   			System.out.println("Please follow the on screen instructions so the YOU can");
   			System.out.println("encrypt, decrypt, or all of the above to any .txt files");
   		}

   		/**
   		 *Prompts the user for values and calls methods that encrypt and decrypts files
   		 *
   		 */
   		public static void userInterface() {

   			Scanner console = new Scanner(System.in);
   			String choice = "";


   			Scanner input = getInputScanner(console); //Asks user for input file name to be manipulated
   			System.out.print("Would you like to (E)ncrypt or (D)ecrypt a message? Or (Q)uit? ");
   			choice = console.next();
			boolean exit = true;
			while (exit) {
					String key = getKey(console);

				if (choice.equalsIgnoreCase("e")) {
   					encrypt(key, input, output);
   				}

   				else if (choice.equalsIgnoreCase("d")) {
   						decrypt(key, input, output);
   				}

   				else if (choice.equalsIgnoreCase("q")) {
   						System.exit(1);
   				}
   				else {
   					System.out.print("Incorrect value. Please try again. ");
   						exit = false;
   				}
   			}
   		}

   		/**
   		 *Calls the encrypts method and prints the encrypted text onto a .txt file
   		 *
   		 *@param key key used to shift the information
   		 *@param input input scanner that scans file
   		 *@param output output PrintStream that moves the text into the file
   		 */
   		public static void encrypt(String key, Scanner input, PrintStream output) {
			while (input.hasNextLine()) {
				String line = encryptLine(key, input.nextLine());
   				output.println(line);
			}
		}

		/**
   		 *Calls the decrypts method and prints the decrypts text onto a .txt file
   		 *
   		 *@param key key used to shift the information
   		 *@param input input scanner that scans file
   		 *@param output output PrintStream that moves the text into the file
   		 */
   		public static void decrypt(String key, Scanner input, PrintStream output) {
   			while (input.hasNextLine()) {
				String line = decryptLine(key, input.nextLine());
   				output.println(line);
			}
		}

		/**
		 *Prompts the user to input a key and then checks the validity of a string
		 *
		 *@param console console for user input
		 *@return key
		 */
   		public static String getKey(Scanner console) {

   			boolean valid = false;
   			String key = "";
   			while(!valid) {
   				System.out.print("Key? ");
   				key = console.next();
   				valid = true;

   				for (int i = 0; i < key.length(); i++) {
   					if (key.charAt(i) < 'A' || key.charAt(i) > 'Z') {
   						valid = false;
   					}
   				}
   			}
   			return key;

   		}

		/**
		 *Encrypts the line by shifting the characters given in the key
		 *
		 *@param key key will determine the index of the shift
		 *@param line line of code that the scanner reads
		 *@return line as encrypted String
		 */
   		public static String encryptLine(String key, String line) {
   			Scanner scanline = new Scanner(line);
   			int newline = 0;
   			//String line = "";
   			while(scanline.hasNext()) {
   				for (int i = 0; i < key.length(); i++){
   					if (scanline.hasNext()) {
   						String str = scanline.next();
   						for (int j = 0; j < str.length(); j++) {
   							if (str.charAt(j) + key.charAt(i) <= 'Z') {
   								newline = (str.charAt(j) + (key.charAt(i) - 'A'));
   							}
   							else if (str.charAt(j) + key.charAt(i) > 'Z') {
   								newline = 'A' + ('Z' % key.charAt(i));
   							}
   						}
   					}
   				}

   			}

   			line = new Character((char)newline).toString();
   			return line;
		}

   		public static String decryptLine(String key, String line) {


   		}

   		public static Scanner getInputScanner(Scanner console) {
			Scanner input = null;
   			System.out.print("Input filename?");
   		    String filename = console.next();
   		    Boolean repeat = false;

			while (!repeat) {
				try {
   					input = new Scanner(new File(filename));
   					repeat = true;
   				}

   				catch (FileNotFoundException e) {
   					System.out.print("Please input a valid filename: ");

   				}

   			}
   		}

   		public static PrintStream getOutputPrintStream(Scanner console) {
			PrintStream output = null;
			String overwrite = null;
   			System.out.print("Output filename?");
   			File outputfile = new File(console.next());
   			boolean exists = outputfile.exists();

   			try {
   				if (exists) {
   					System.out.print("Do you want to overwrite? (y,n) ");
   					overwrite = console.next();
   						if (overwrite.equalsIgnoreCase("y")) {
   						 output = new PrintStream(outputfile);
   						}

   						else {
   						System.out.print("Please input a new file name: ");
   						}
   				}

   			}
			catch (FileNotFoundException e) {
   				System.out.print("Please input a valid filename: ");
   			}


   		}

[Fubarable]

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