Intro to Java Programming. Please make sure to make java code simple and clean, also add comments, so that I can understand the process.

Design and implement the class Day that implements the day of the week in a program. The class Day should store the day, such as Sun for Sunday. The program should be able to perform the following operations on an object of the type Day:

a) Set the day b) Print the day c) Return the day d) Return the nextday e) Return the previous day f) Calculate and return a day by adding certain days to current day. (ie. if the current day is Monday and we add 4 days then the new day is Friday). g) Add the appropriate constructors. h) Write the definitions of the methods to implement the operation for the class Day, as defined in a through g. i) Write a program to test various operations on the class Day.