Java 6 Illuminated: An Active Learning Approach, 2nd Edition

The charAt method returns the character at a particular index in a String.

One of the uses of this method is for extracting just the first character of a

String, which might be advantageous when prompting the user for an

answer to a question. For example, we might ask users if they want to play

again. They can answer “y,”“yes,” or “you bet!”

Our only concern is whether the first character is a y, so we could use this

method to put the first character of their answer into a char variable.

Assuming the user’s answer was previously assigned to a String variable

named answerString, we would use the following statement to extract the

first character of