Write a program to reverse the case of the letters in a line. If a letter is lowercase in the input, it should be uppercase in the output, and vice versa. Input consists of multiple lines with at most 80 characters. Input is terminated by a line containing exactly STOP. Example consider data.txt shown below. Here is a line. Here is another line. Things STOP that! STOP ignore this Run your program by "piping in the sample input. -$ java Flip