
We often come across situations where we are required to reverse the characters of a string.

This can be achieved using multiple approaches. However, the most straightforward approach is using the `reverse()` method, which is a built-in method of the `java.lang.StringBuilder` class in Java. 



# Code

To reverse the characters of a `String` object, we first need to convert it to a mutable `StringBuilder` object. 

Next, we need to call the `reverse()` method to reverse the character sequence of the string.

Finally, we can obtain the reversed string from the `StringBuilder` object by calling the `toString()` method on it.  

Let's look at the code snippet below to understand this better.
  

class Reverse {
    public static void main( String args[] ) {
        // string to be reversed.
        String str = "Hello";

        // Converting the string to StringBuilder object
        StringBuilder sb = new StringBuilder(str);

        // Reversing the string
        sb.reverse(); 

        // object to store reversed string
        String revStr = sb.toString();
        
        // printing reversed string
        System.out.println(revStr); 
    }
}

How to reverse a string in Java

Convert a String to StringBuilder, call reverse(), and then toString() to reverse it.