Published Aug 22, 2022
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The .deleteCharAt() method removes the character at the specified index from the contents of a StringBuilder and returns the modified object.



The int argument index specifies the zero-based index of the character to delete. The sequence is shortened by one character. If index is negative or greater than the length of the sequence, a StringIndexOutOfBoundsException is thrown.


The following example creates a StringBuilder with a specified String then uses the .deleteCharAt() method to change its contents:

import java.util.*;
public class Example {
public static void main(String[] args)
StringBuilder str = new StringBuilder("Hello World!");

This produces the following output:

Hello World!
Hello World

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