Test3.java

public class Main {

    public static class Reverse {
        public String reverse(String source) {
            String [] stringArray = source.split("");

            for(int i = 0; i < stringArray.length / 2; i++)
            {
                String temp = stringArray[i];
                stringArray[i] = stringArray[stringArray.length - i - 1];
                stringArray[stringArray.length - i - 1] = temp;
            }
            return Arrays.toString(stringArray);
        }
    }



    public static void main(String[] args) {
        Reverse reverse = new Reverse();
        System.out.print(reverse.reverse("Hello"));
    }
}