I need part D done in Java please. The below snips are my java files that I've already done but will ve needed for part D.

PART D: Now implement a class called University that has these private instance variables name -a String indicating the name of the University (e.g., "Purdue University Northwest") . courses - an ArrayListeCourse representing the list of courses offered by the university students an ArrayList representing the list of students registered at the university . Create the following public methods (see the testing code below for more on the method signatures) . get methods for all three instance variables . a single constructor that takes the name of the university a method called offerCourse(Course c) which adds the given course to the list of courses that the University offers a method called cancelCourse(Course c) which removes the given course from the list of courses that the University offers. The university must not allow a Course to be deleted that has students registered in it a method called enrollStudentInCourse(Student s, Course c) which enrolls the given student into the given course. The university must not allow a Student to enroll for a course that does not exist a method called withdrawStudentFromCourse(Student s, Course c) which withdraws the given student from the given course. The university must not allow a Student to withdraw from a course that he/she is not registered in. A toString0 method that returns a string representation of the university like this (where the numbers will vary according to the sizes of the two array lists): Purdue University Northwest: 26 Courses, 10 Students PART D: Now implement a class called University that has these private instance variables name -a String indicating the name of the University (e.g., "Purdue University Northwest") . courses - an ArrayListeCourse representing the list of courses offered by the university students an ArrayList representing the list of students registered at the university . Create the following public methods (see the testing code below for more on the method signatures) . get methods for all three instance variables . a single constructor that takes the name of the university a method called offerCourse(Course c) which adds the given course to the list of courses that the University offers a method called cancelCourse(Course c) which removes the given course from the list of courses that the University offers. The university must not allow a Course to be deleted that has students registered in it a method called enrollStudentInCourse(Student s, Course c) which enrolls the given student into the given course. The university must not allow a Student to enroll for a course that does not exist a method called withdrawStudentFromCourse(Student s, Course c) which withdraws the given student from the given course. The university must not allow a Student to withdraw from a course that he/she is not registered in. A toString0 method that returns a string representation of the university like this (where the numbers will vary according to the sizes of the two array lists): Purdue University Northwest: 26 Courses, 10 Students