Enciphing

[DuncanHollows]

Can someone please help me fix this. It compiles correctly but it outputs the wrong things. I'm not sure what I've done wrong.

import java.util.Scanner;
public class Cipher
{
   public static void main(String[] args)
    {
        Scanner keyboard = new Scanner(System.in);
        String Input;
        String Output = "";
        System.out.println("Input Word");
        String Encipher = keyboard.nextLine();
        Encipher.replaceAll("\\s","");
          
        Integer EncipherPosition = 0;
        String Cipher = "";
        for (EncipherPosition = 0; EncipherPosition < Encipher.length(); EncipherPosition ++)
            {
                char EncipherChar = Encipher.charAt(EncipherPosition);
                String EncipherString = "" + EncipherChar;
                boolean temp = Cipher.contains(EncipherString);
                if (temp == false)
                    {
                        Cipher += Encipher.charAt(EncipherPosition);
                    }  
            }
        System.out.println("This is what you Input: " + Cipher);
         
        String alphabet = "abcdefghijklmnopqrstuvwxyz";
        Integer alphabetPosition = 0;
        for (alphabetPosition = 0;alphabetPosition < alphabet.length();alphabetPosition ++)
            {
                char alphabetTempChar = alphabet.charAt(alphabetPosition);
                String alphabetTempString = "" + alphabetTempChar;
                boolean alphabetTemp = Cipher.contains(alphabetTempString);
                if (alphabetTemp == false)
                    {
                        Cipher += alphabet.charAt(EncipherPosition);
                    }
            }
          
        System.out.println("This is your ciphered text" + Cipher + alphabet + Cipher);
        System.out.println("Input message:");
        Input = keyboard.nextLine();
          
        Integer position = 0;
        for (position = 0; position < alphabet.length(); position ++)
            {
                char CipherChar = Cipher.charAt(position);
                String CipherString = "" + CipherChar;
                char alphabetChar = alphabet.charAt(position);
                String alphabetString = "" + alphabetChar;
                Input.replace(alphabetString,CipherString);
            }
        System.out.println("This is your encoded message : " + Input);
        }
}

[DarrylBurke]

it outputs the wrong things

You need to be more specific. What output do you expect, and what wrong output do you get?

db

[DuncanHollows]

This is what happens when I run the program

Input Word
testing
This is what you Input: tesing
This is your ciphered texttesinghhhhhhhhhhhhhhhhhhhabcdefghijklmnopqrstu vwxyztesinghhhhhhhhhhhhhhhhhhh
Input message:
test one

It outputs pretty near random letters instead of an enciphered one and doesn't finish the program because it should also output an enciphered message that was input.
I get these errors:

java.lang.StringIndexOutOfBoundsException: String index out of range: 25
	at java.lang.String.charAt(String.java:686)
	at Cipher.main(Cipher.java:47)

Thanks for your help!

[Diargg]

Cipher += alphabet.charAt(EncipherPosition);

Using too much copy paste can be a problem.

[DuncanHollows]

What's wrong with it?

[Norm]

Can you post what the output from the program should be?

You get the StringIndexOutOfBoundsException: String index out of range: 25
because the index you are using is past the end of the String. Check your logic to make sure the index stays within the length of the String.

[Diargg]

What's wrong with it?

Check to see where EncipherPosition is last defined. You copied the code fragment above it and forgot to change the variable name.

[DuncanHollows]

Can you post what the output from the program should be?

You get the StringIndexOutOfBoundsException: String index out of range: 25
because the index you are using is past the end of the String. Check your logic to make sure the index stays within the length of the String.

Check to see where EncipherPosition is last defined. You copied the code fragment above it and forgot to change the variable name.

I'm not sure what either of you mean

[Norm]

What should be printed out by the program?
Your post#3 shows some of what is printed out, what should the rest of the print out be?

What is the length of the String where the exception occurs? What is the value of the index when the exception occurs?
Add a println statement just before that statement and print out those values.