Program to perform string reverse operation

/* Program to perform string reverse operation */

class P15B
{
    public static void main(String args[])
    {
        String s1 = "Gandhi";
        System.out.println(" Original String is : "+s1);
        System.out.println(" Reverse String is : "+reverseIt(s1));
    }

        public static String reverseIt(String source)
        {
              int i, len = source.length();
              StringBuffer dest = new StringBuffer(len);

               for (i=(len - 1); i>=0; i--)
                    dest.append(source.charAt(i));
               return dest.toString();
        }

}