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The () returns the character at the specified index. The index value should lie between 0 and length()-1.
Signature:

 public char charAt(int index)  

Parameter:

 index- Index of the character to be returned.

Return:

 returns character at the specified position.

Exception:

 StringIndexOutOfBoundsException- If index is 
 negative or greater then the length of the 
 String.

Example:To show working of charAt() method

// Java program to demonstrate
// working of charAt() method

class Gfg {
    public static void main(String args[])
    {
        String s = "Welcome! to Geeksforgeeks Planet";

        char ch = s.charAt(3);
        System.out.println(ch);

        ch = s.charAt(0);
        System.out.println(ch);
    }
}
// Java program to demonstrate
// working of charAt() method

class Gfg {
    public static void main(String args[])
    {
        String s = "abc";

        char ch = s.charAt(4);
        System.out.println(ch);
    }
}
Output:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 4
    at java.lang.String.charAt(String.java:658)
    at Gfg.main(File.java:9)



String Class in Java


- avatar - Java String charAt() method with example

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