B. Write a method called genPalin that accepts a String as parameter and returns a palindrome (a string that has characters the same forwards as it does backwards) version generated from it. It generates it by adding all the letters (except for the last one) of the original string at the end in reverse order. Make sure the returned string has all lower case characters. Examples shown below:

 System.out.println(genPalin("1234")); //"1234321" System.out.println(genPalin("Race")); //"racecar" System.out.println(genPalin("pot")); //"potop" System.out.println(genPalin("I")); //"i"