What is the error in this java code?

Question

https://code.sololearn.com/c46vLYmKhy2U/?ref=app

I tried this code.
Sample input: Arkham Man Chaplin
Sample Output: A. M. Chaplin

The program is incomplete actually. But i can't understand the errors that are coming.

Could you please help me?

Answer 1

Gamer To The Core- Born Gamer

There should be i < fn.length() as index start from 0

so if the string length is 10 then charAt(10) will give exception because there is no 10th index even there is 9th index (10 - 1) since index start from 0

if you want to use <= then i should start from 1 and there should be charAt(i - 1)

Answer 2

A͢J tysm!