Suppose now that the university is going to extend their system by creating two derived classes based on the Student class, UGStudent and GradStudent: class GradStudent (Student): def _init_(self, first, last, id): Student._init_(self, first, last, id) self.passed_writtens = False self.lab = None def take_writtens (grade): if grade > 80: self.passed_writtens = True class UGStudent (Student): def _init_(self, first, last, id, on_campus = False): Student._init_(self, first, last, id) self.on_campus = on_campus self.dorm = None Given that the following declarations are made: u1 = UGStudent('Bob', 'Jackson', 112345, False) g1 = GradStudent('Greg', 'Student', 712331) s1 = Student('Sally', 'Tester', 234663) Which of the following expressions are legal and will not generate errors? u1.add_course('CSC12021') s1.take_writtens(92) print(g1.on_campus) g1.take_writtens(76) print(g1.overload()) print(s1.dorm) print(g1.jd)

Suppose now that the university is going to extend their system by creating two derived classes based on the Student class, UGStudent and GradStudent: class GradStudent (Student): def _init_(self, first, last, id): Student._init_(self, first, last, id) self.passed_writtens = False self.lab = None def take_writtens (grade): if grade > 80: self.passed_writtens = True class UGStudent (Student): def _init_(self, first, last, id, on_campus = False): Student._init_(self, first, last, id) self.on_campus = on_campus self.dorm = None Given that the following declarations are made: u1 = UGStudent('Bob', 'Jackson', 112345, False) g1 = GradStudent('Greg', 'Student', 712331) s1 = Student('Sally', 'Tester', 234663) Which of the following expressions are legal and will not generate errors? u1.add_course('CSC12021') s1.take_writtens(92) print(g1.on_campus) g1.take_writtens(76) print(g1.overload()) print(s1.dorm) print(g1.jd)

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter8: Arrays

Section: Chapter Questions

Problem 7PE

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py You want to initialize parts of a class definition once at the time a class is defined, notwhen instances are created.
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Book Donation App Create a book-app directory. The app can be used to manage book donations and track donors and books. The catalog is implemented using the following classes: 1. The app should have donors-repo.js to maintain the list of donors and allow adding, updating, and deleting donors. The donor object has donorID, firstName, lastName, and email properties. This module should implement the following functions: • getDonor(donorId): returns a donor by id. • addDonor(donor): adds a donor to the list of donors; donorID should be autoassigned a random number. • updateDonor(donor): updates the donor having the matching donorID. • deleteDonor(donorID): delete the donor with donorID from the list of donors, only if they are not associated with any books. 2. The app should have books-repo.js to maintain the list of donated books and allow adding, updating, and deleting books. The book object has bookID, title, authors, and donorID properties. • donorID references the book’s donor. This…
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Create classs Code it
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