.reverse()

The .reverse() method returns a modified StringBuilder object with its character sequence rearranged in the opposite order. This is the most straightforward way to reverse a string in Java.

Syntax

myStringBuilder.reverse();

The .reverse() method takes no arguments.

Example

The following example creates a StringBuilder with a specified String then uses the .reverse() method on it:

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

This produces the following output:

Hello World!
!dlroW olleH

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