The picture below is the question

The picture below is the text code containing the other classes and subclasses

1) The main method:

2) The superclass student:

3). The subclass UndergradStudent:

4). The subclass Graduate student:

Download the complete student information program and add the following feature to it There is still duplicate code in the deansHonourList) method in the two subclasses. This cde can be moved into the superclass, but the two types of students have different criteria for being on the list. You can make it work without using instanceof or getClassO, and without adding any more it-else statements or instance variables. Make this change; there should be no deansHonourListO method in either GraduateStudent or UndergraduateStudent, and the getGPAO method can be removed. Hint add another instance method to the superclass and override it in the subclasses as necessary, call that method in your deansHonourListO method 2. After making the change above, create another subclass of Student called Visitingstudent. A visiting student has all of the Student instance variables, plus a string that indicates which university the student is visiting from. A visiting student cannot be on the Dean's honour list, make sure the deansHonourListO method always returns false for them. Also make sure the tostringO method includes the additional information. Submit vour four classes (Student, Graduatestudent, Undergraduatestudent, and visitingstudent) by the due