What is the function of the charAt method in Java?

The charAt function is a method used to retrieve a specific character in a string. It takes an integer as a parameter, which represents the index of the character to be retrieved in the string, and returns the character at that index position. Indexing starts from 0, meaning the index of the first character is 0. If the specified index is beyond the length of the string, a StringIndexOutOfBoundsException exception is thrown.