Thread: Need help writing a Java program

Do you have any code so far (if so, please post it)?

For getting input and displaying simple messages, I suggest using JOptionPane. Specifically, use JOptionPane.showInputDialog() for input and JOptionPane.showMessageDialog() for display messages.

For replacing characters in a String with other characters, I'd look at the <String>.replace().

How would you do this by hand, with a piece of paper and a pencil and no computer?

I feel like you are making the problem more complex than it is. With the cipher, you are not "replacing" letters in the alphabet, but rather "rearranging" them. Trying to use the String.replace(...) method will make this more complex, because it's not necessarily the "best" way of doing this.

Like Kevin suggested, try to explain how you would do this by hand, and then try to replicate that as closely as possible (step-by-step) in your code.

Dude you just in luck, i made one of this for my cipher.

ok you need to understand, my explanations and self reasoning are all messed up. I do stuff that would confuse people...
So i had a project for school last year which, i had to make my own cipher.
what you want, is exactly what i got.
This is the full code: Scroll further down for the code you will need

(Spoonfeeding removed by moderator)

@Ajan

Posting exact answers, particularly code, is discouraged. The goal of these forums is to help one reach a goal, not reach it for him/her. For a more in-depth reasoning, please read this.

@aussiemcgr

You can complete this without using <String>.replace()? I'm very curious now. Could you explain more (if it would give away the code, you can personal message me)?

Sure Snowguy. I just wrote it up and sent it to you.

Originally Posted by Ajan

@snow will i get banned now? i never knew that you couldnt do it for the people who asked. ill keep this in mind for the next question, soz

You aren't going to be automatically banned, especially because you're being cool about it (instead of the usual reaction when people find out that handing out code is bad). But just like you probably wouldn't write a term paper for somebody, you probably shouldn't give away full code solutions like that. It's awesome that you want to help, but a better way is to guide the poster with questions that help them think through the problem instead of just dropping the solution in their laps.