Argh, need help.

In my Java class, we're holding a bit of a competition.

In this particular program, I need to have the user input a string, a search string, and a replacement string such that the program searches the input string for the search string, and when it finds the search string, it replaces it with the replacement string.

Here's what I have so far.


import hsa.Stdin;
public class B1
{
    public static void main (String[] args)
    {
        System.out.print ("Input String: ");
        String input = Stdin.readLine ();
        System.out.print ("Search string: ");
        String search = Stdin.readLine ();
        System.out.print ("Replacement string: ");
        String replace = Stdin.readLine ();
        String[] inp2 = {input};
        String[] replace2 = {replace};
        for (int i = 0 ; i < input.length () ; i++)
        {
            if (!(input.charAt (i) == search.charAt (i)))
                inp2 [i] = replace2 [i];
            System.out.print (inp2 [i]);
        }
    }
}
Now, here's the problem: I have no clue how to get this to work correctly. I think I'm on the right track, just not there yet!

Here's my output:
Input String: Josh Baker
Search string: osh
Replacement string: ohn
ohnjava.lang.ArrayIndexOutOfBoundsException: 1
        at B1.main(B1.java:18)

Can anyone help? :/

>>1
java.util.regex