java.lang.StringBuilder deleteCharAt(int index)
Description
On this document we will be showing a java example on how to use the deleteCharAt(int index) method of StringBuilder Class. Basically the deleteCharAt(int index) method removes/delete a character on the character sequence on the specified index.
Notes:
- A StringIndexOutOfBoundsException will be thrown by the deleteCharAt() method if the index is negative or greater than or equal to length().
- It will yield the same result as calling the delete() with the start value being equal to index and the end argument equals to index + 1.
Method Syntax
public StringBuilder deleteCharAt(int index)
Method Argument
| Data Type | Parameter | Description |
|---|---|---|
| int | index | index of the char to be removed. |
Method Returns
The deleteCharAt(int index) method returns this object with a character removed as specified by index argument.
Compatibility
Requires Java 1.5 and up
Java StringBuilder deleteCharAt(int index) Example
Below is a java code demonstrates the use of deleteCharAt(int index) method of StringBuilder class. The example presented might be simple however it shows the behavior of the deleteCharAt() method.
package com.javatutorialhq.java.examples;
/*
* A java example source code to demonstrate
* the use of deleteCharAt() method of StringBuilder class
*/
public class StringBuilderDeleteExample {
public static void main(String[] args) {
// initialize the StringBuffer object
StringBuilder sb = new StringBuilder("javatutorialhq.com");
System.out.println("Contents of buffer:" + sb);
int index = 5;
// delete the character at index 5
sb.deleteCharAt(index);
System.out.println("New Contents of Buffer:" + sb);
}
}
The java example source code above, demonstrates the use of deleteCharAt(int index) method of StringBuilder class. Initially the code assigns a string “javatutorialhq.com” as initial contents of the string buffer. Then we use deleteCharAt method to delete the character of the StringBuilder on index 5.
Sample Output
Below is the sample output when you run the above example.
