java - Reversing string and toggle lower-upper-case -

i need write application takes string input. after processing, should print out string reversed, , characters switched lower uppercase , vise versa. want achieve using stringbuilder.

sample run:
input: hello human
output: namuh olleh

here straight forward , simple way of solving problem:

1. read user input using instance scanner class. , nextline() method. (construct scanner giving system.in argument.)

2. create stringbuilder.

3. fetch array of characters input string, using instance input.tochararray()

4. reverse array arrays.aslist , collections.reverse

   collections.reverse(arrays.aslist(yourchararray)); 

5. loop through list using instance for-each loop.

   for (character c : yourchararray) {     ... } 

6. for each character, check if c.isuppercase (if append c.tolowercase()) else append c.touppercase().

(an alternative approach give stringbuilder input-string argument, , manipulate string in-place using reverse, charat , setcharat methods.)