B1. Given the following classes, answer the below questions.

1. Person (abstract class) that has the following:

Data Fields: private String name, private String address

Constructor: Constructor to create a Person object with specified name and address.

Methods: Accessor and mutator methods for all data fields.

2. Student (extend the class Person) that has the following:

Data Fields: private int ID, private double grade

Constructor: Constructor to create a Student object with specified name, address, ID & grade.

Methods: Accessor and mutator methods for all data fields.

3. Director (extend the class Person) that has the following:

Data Fields: private double salary.

Constructor: Constructor to create a Director object with specified name, address, and salary.

Methods: Accessor and mutator methods for salary data field.

4. GraduateStudent(extend the class Student) that has the following:

Data Fields: -

Constructor: Constructor to create a GraduateStudent object with specified name,

address, ID, and grade.

Methods: -

Design UML diagram for the above classes.

Write the code only for class Person and Class Student.

B1. Given the following classes, answer the below questions. 1. Person (abstract class) that has the following: Data Fields: private String name, private String address Constructor: Constructor to create a Person object with specified name and address. Methods: Accessor and mutator methods for all data fields. 2. Student (extend the class Person) that has the following: Data Fields: private int ID, private double grade Constructor: Constructor to create a Student object with specified name, address, ID & grade Methods: Accessor and mutator methods for all data fields. 3. Director (extend the class Person) that has the following: Data Fields: private double salary. Constructor: Constructor to create a Director object with specified name, address, and salary. Methods: Accessor and mutator methods for salary data field. 4. Graduate Student(extend the class Student) that has the following: Data Fields: Constructor: Constructor to create a Graduate Student object with specified name, address, ID and grade: Methods: * Design UML diagram for the above classes. * Write the code only for class Person and Class Student