problem

import java.util.Scanner;

public class Lab08b
{

    public static void main(String[] args)
    {
        Scanner sc = new Scanner (System.in);
        String input = getText(sc);

        if (input.equals("!!!"))
        {
            System.out.println("Goodbye!");
        }
        while (!input.equals("!!!"))
        {
            String encoded = rot13(input);
            displayResults(input, encoded);
            input = getText(sc);
            if (input.equals("!!!"))
            {
            	System.out.println("Goodbye!");
            }
        }

    }


    private static String getText(Scanner inScanner)
    {
        System.out.print("Enter your text to encrypt (!!! to quit): ");
        String original = inScanner.nextLine();
        while (original.equals(""))
        {
            System.out.println("ERROR! String must not be empty!");
            System.out.print("Enter your text to encrypt (!!! to quit): ");
            original = inScanner.nextLine();
        }
        return original;
    }


    private static String rot13(String input)
    {
        String str = "";

        for (int i = 0; i < input.length(); i++)
        {
            char ch = input.charAt(i);
            if (ch >= 'A' && ch <= 'Z')
            {
                ch = (char) (ch + 13);
                if (ch > 'Z')
                {
                    ch = (char)(ch - 26);
                }
            }
            else if (ch >= 'a' && ch <= 'z')
            {
                ch = (char)(ch + 13);
                if (ch > 'z')
                {
                    ch = (char)(ch - 26);
                }
            }
            str = str + ch;
        }
        return str;
    }

    private static void displayResults(String inText, String encText)
    {
        System.out.print("+");
        for (int i = 13 + encText.length(); i > 0; i--)
        {
            System.out.print("-");
        }
        System.out.println("+");

        System.out.println("| ORIGINAL:  " + inText + " |");
        System.out.println("| ENCRYPTED: " + encText + " |");

        System.out.print("+");
        for(int i = 13 + encText.length(); i > 0; i--){
            System.out.print("-");
        }
        System.out.println("+");
    }

    /*private static String shiftMessage(String input, int n)
    {

    }*/

}