Would this be easy to make in java?

[tooner]

I want to make something simple, almost like a decoder. All I want this script to do is when something is typed in a text box such as "aijjp" it could come out as "hello" in the same text box when the user hits enter. So each letter has another equivalent in the alphabet. Like a code or whatever. Would this be easy to make?

I'm sorry if I sound dumb and for my lack of knowledge as I am new to java.

Any help would be appreciated.

[Fubarable]

Yes, it would be easy to make.

[M77]

Not sure, but I guess you need JavaScript and not Java.

[OrangeDog]

No, Java does that easily.