Use [] in Java Java charAt () method

Explanation

java.lang.String.charAt () method returns the char value at the specified index. The index range is from 0 to length () - 1. For the index of the array, the first sequence is a char value at index 0, the index 1, and so on

statement

public char charAt(int index)

parameter

index  - This is the value of the index char

return value

This method returns the char value at the specified index of the string. Char index of the first value is zero.

abnormal

An IndexOutOfBoundsException  - if the index argument is negative or not less than the length of the string.

Examples

public class Test {
    public static void main(String[] args) {
        String s ="abc";
        System.out.println(s.charAt(2));
    }
}
Operating results are:
c

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Origin www.cnblogs.com/jxd283465/p/11939916.html