For Java Programming: Write a class encapsulating the concept of a course grade, assuming a course grade has the following attributes: a course name and a letter grade. Include a constructor, the accessors and mutators, and methods toString and equals. Write a client class to test all the methods in your class.

Write a java program that has:A class University that has:- Three private instance variables named firstName, lastName, and id- A constructor to initialize the three instance variables- A toString method to return: “Welcome,” + firstName +” “ + lastName + “Your ID is ” + id- AccessorsA subclass Employee that has:- Five additional private instance variables named department, rate, bonus, hours, and salary- An appropriate constructor to use constructor of superclass in defining those of the subclass- A method named compteSalary ( ) to return salary- A method named computeBonus ( ) to return bonus- Accessors A subclass Staff that:- Overrides computeBonus ( ) such that if hours are greater than 40, there will be %10 bonus for each additional houradded to salary- Overrides compteSalary ( ) such that salary = (rate * hours) + bonus- Overrides toString method to add department and salary into the outputA subclass Faculty that:- Overrides computeBonus ( ) such that if hours are greater than…

Java

In Java: Define a class called Exam that manages a set of up to25 Question objects. Define the add method of the mainExam class to add a question to the exam. Define theassignExam method of the Exam class to present eachquestion in turn to the user, accept an answer for each one, and keeptrack of the results. Define a class called ExamTime witha main method that populates the exam, presents it, and prints thefinal results.