In GradeBook2class, modify the constructorso that ithas three parameters: the course name, the number of students, and the number of exams. Define number of students and the number of exams as int type of variables. And then in the constructor tobuild an appropriately sized two-dimensional arrayby using those parameters. And then, set each element of the new two-dimensional array to -1 to indicate that no grade has been entered for that elementin the contructor.