public class StringRotation {

    public static String rotateString(String str, int rotation) {

        if (str == null || str.isEmpty() || rotation == 0) {

            return str;

        }

        int length = str.length();

        rotation = rotation % length; // To handle rotations larger than the string length

        if (rotation < 0) {

            rotation += length; // Convert negative rotation to positive equivalent

        }

        // Divide and concatenate parts of the string

        String rotated = str.substring(rotation) + str.substring(0, rotation);

        return rotated;

    }

    public static void main(String[] args) {

        String str = "hello";

        int rotation = 2; // Positive rotates left, negative rotates right

        String result = rotateString(str, rotation);

        System.out.println("Original String: " + str);

        System.out.println("Rotated String: " + result);

    }

}