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

Also, I provided photos from the textbook to assist with the first portion.

1. Write the class Tests. It will be saved as Tests.java. Make sure to have the following in this class:

a) Constructor for first name, last name, five tests scores (an array), average tests scores and grade.

b) Method to calculate the average

c) Method to calculate the letter grade

d) Set and Get methods for the names, and tests

e) Get Grade method

f) Get Average method

g) toString method

13. a. Write the definition of the class Tests such that an object of this class can store a student's first name, last name, five test scores, average tests score, and grade. (Use an array to store the test scores.) Add constructors and methods to manipulate data stored in an object. Among other things, your class must contain methods to calculate test averages, return test averages, calculate grades, return grades, and modify individual test scores. The method toString must return test data (including student's name, five test scores, average, and grade) as a string. Write a program to calculate students' average test scores and the grade. You may assume the following input data