Question

Question 1 (24 Marks] 1. (4 marks) Write an immutable Person class in Java which provides the following. • Two attributes: lastName and first Name of type String. • Appropriate initialization, accessors/mutator methods. 2. (6 marks) Write a Student class that is a subclass of Person class (in the previous question) which provides the following. • Two attributes: A unique student ID of type String and GPA of type float; the student ID is initialized when a Student object gets created, and cannot be modified thereafter. • Appropriate initialization, accessors/mutator methods. Note: GPA attribute stores the student's Grade Point Average. 3. (14 marks) Write a Course class in Java, which provides the following. (a) Two attributes: courseName and year of type String. (b) Information regarding all students enrolled in the course (information regarding each student is stored in the Student class from the previous question). (C) Appropriate initialization, accessors/mutator methods. (d) Ability to add a new Student. (e) Ability to remove a student based on the studentID. (f) Ability to calculate and return the average student GPA for the course. Average GPA is the sum of GPAs for all students divided by the number of students in the class. (g) Ability to display the list of students using two different strategies. • Name-based Strategy must display the list of students ordered based on last name. • GPA-based Strategy must display the list of students ordered based on the GPA. You must use the Strategy pattern to implement the display capability. You must write Java code for the classes to implement the strategies as well. However, when implementing the two strategy classes you are not required to write the code for sorting the student list, instead the method should just display a message to indicate that it is the display method of the particular strategy. You may use any of a Java classes that are provided in the Appendix.

Answer 1

Points to consider:

1. We need to declare the instance variables.
2. Then function for getters and setters are to be declared.
3. The constructor for the class has to be defined.

Code

public class Person{
   // Instance Variables
   private String firstName, lastName;
   // Parameterized Constructor
   public Person(String firstName, String lastName) {
       super();
       this.firstName = firstName;
       this.lastName = lastName;
   }
   // Getter for First Name
   public String getFirstName() {
       return firstName;
   }
   // Setter for First Name
   public void setFirstName(String firstName) {
       this.firstName = firstName;
   }
   // Getter for last Name
   public String getLastName() {
       return lastName;
   }
   // Setter for last name
   public void setLastName(String lastName) {
       this.lastName = lastName;
   }
   // To String function for the Person Class
   @Override
   public String toString() {
       return "Person [firstName=" + firstName + ", lastName=" + lastName + "]";
   }   
}

So above is the Person Class.

Being a Chegg expert, I am obliged to do only one question at a time.
I hope you understand.
Thanks