Get char from multi-string array

I have a string array which looks like:

String[] rows = {"AAA","BBB","CCC"};

How can I get a specific index of a certain row? If I do rows[6] i get an out of bounds ex. However when I do rows[2] i get the entire CCC string.

Do I have to get the row first, then get a specific char? Or can I not just grab it from the array?