The
charAt(int index) method of
StringBuilder Class is used to return the character at the specified index of String contained by StringBuilder Object. The index value should lie between 0 and length()-1.
Syntax:
public char charAt(int index)
Parameters: This method accepts one int type parameter
index which represents index of the character to be returned.
Return Value: This method returns
character at the specified position.
Exception: This method throws
IndexOutOfBoundsException when index is negative or greater than or equal to length().
Below programs demonstrate the charAt() method of StringBuilder Class:
Example 1:
Output:
StringBuilder Object contains = Geek
Character at Position 1 in StringBuilder = e
Example 2:
Output:
String is WelcomeGeeks
Char at position 0 is W
Char at position 1 is e
Char at position 2 is l
Char at position 3 is c
Char at position 4 is o
Char at position 5 is m
Char at position 6 is e
Char at position 7 is G
Char at position 8 is e
Char at position 9 is e
Char at position 10 is k
Char at position 11 is s
Example 3: To demonstrate IndexOutOfBoundException
