Well there are two parts of code I'm working on, one is a driver for Caesar Cipher and the other is the Caesar Cipher class itself. I can't figure out how to pass the information the user inputs from the driver class to the cipher class. Any help would be great, this is getting aggravating.
public class Driver
{
public static void main (String [] args)
{
Scanner in = new Scanner(System.in); // read input from terminal window
CaesarCipher code; // an instance of a cipher
String text; // user input to convert
String result; // result of conversion
int key; // key for Caesar cipher
int menuSelection; // user's menu selection
System.out.println("CS 160, Program 2: Caesar Cipher");
System.out.println("--------------------------------\n");
System.out.print("Enter the cipher key [0..25]: ");
key = in.nextInt();
code = new CaesarCipher(key);
displayMenu();
menuSelection = getMenuChoice(in);
while (menuSelection != QUIT)
{
if (menuSelection == ENCODE)
{
System.out.print("Enter a sentence to encode: ");
text = in.nextLine();
result = code.encode(text);
System.out.println("Plain: " + text);
System.out.println("Cipher: " + result);
}
else if (menuSelection == DECODE)
{
System.out.print("Enter numbers to decode: ");
text = in.nextLine();
result = code.decode(text);
System.out.println("Cipher: " + text);
System.out.println("Plain: " + result);
}
else
{
System.out.println("Invalid option, please try again.");
}
displayMenu();
menuSelection = getMenuChoice(in);
}
System.out.println("\nGoodbye.");
}
private static void displayMenu()
{
System.out.println();
System.out.println("1. Encode a message.");
System.out.println("2. Decode a message.");
System.out.println("3. Quit.");
}
private static int getMenuChoice(Scanner in)
{
int menuChoice; // user's menu selection
System.out.print("Please enter your menu choice: ");
menuChoice = in.nextInt();
in.nextLine(); // clear the user input line
return menuChoice;
}
public static final int ENCODE = 1; // user wants to encode text
public static final int DECODE = 2; // user wants to decode numbers
public static final int QUIT = 3; // user wants to quit
}import java.util.Scanner;
public class CaesarCipher
{
public CaesarCipher(int key)
{
}
public String encode(String text)
{
char current;
//int code;
this.text = text;
for (int position = 0; position < text.length(); position++)
{
current = text.charAt(position);
current = Character.toLowerCase(current);
System.out.print(current + " ");
int code = (int) current;
//System.out.print(code + " ");
if (Character.isLowerCase(current))
{
code = code - A_VALUE; //+ key;
System.out.print(code + " ");
}
//return code;
}
return "coded string";
}
public String decode(String text)
{
return "decoded string";
}
public int code;
public String text;
public int key;
private static final int A_VALUE = (int) 'a';
}