Reversing a string is a popular problem that is often encountered during technical interviews or daily coding practice. In this post, we’ll discuss two different ways to reverse a string in Java: using an iterative approach and using built-in functions.

1. Iterative approach

public class ReverseString {
    public static void main(String[] args) {
        String original = "Hello, World!";
        String reversed = "";
        
        for (int i = original.length() - 1; i >= 0; i--) {
            reversed += original.charAt(i);
        }
        
        System.out.println("Reversed String: " + reversed);
    }
}

2. Using StringBuilder

public class ReverseStringWithBuilder {
    public static void main(String[] args) {
        String original = "Hello, World!";
        String reversed = new StringBuilder(original).reverse().toString();
        
        System.out.println("Reversed String using StringBuilder: " + reversed);
    }
}

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