Answer Happy

I'm sorry for this one, I just don't understand it at all.
This would be using Java
Modify the Student class presented in this chapter as follows. Each student object should also contain the scores for three tests. Provide a constructor that sets all instance values based on parameter values. Overload the constructor such that each test score is assumed to be initially zero. Provide a method called setTestScore that accepts two parameters: the test number (1 through 3) and the score. Also provide a method called getTestScore that accepts the test number and returns the appropriate score. Provide a method called average that computes and returns the average test score for this student. Modify the toString method such that the test scores and average are included in the description of the student. Modify the driver class main method to exercise the new Student methods.

//**** // Address.java Author: Lewis/Loftus // Represents a street address. public class Address { private String streetAddress, city, state; private long zipCode; //---- // Constructor: Sets up this address with the specified data. //----- public Address (String street, String town, String st, long zip) { streetAddress = street; city = town; state = st; zipCode = zip; } //-- // Returns a description of this Address object. // --- public String toString() { String result; result = street Address + "\n"; result += city + ", " + state + + ZipCode; return result; }}

//**** // Student.java Author: Lewis/Loftus // // Represents a college student. //* public class Student { private String firstName, lastName; private Address home Address, schoolAddress; //---- // Constructor: Sets up this student with the specified values. //---- public Student (String first, String last, Address home, Address school) { firstName = first; lastName = last; home Address = home; schoolAddress = school; } //---- // Returns a string description of this Student object. //----- public String toString() { String result; result = firstName + " " + lastName + "\n"; result += "Home Address: \n" + homeAddress + "\n"; result "School Address: \n" + schoolAddress; return result; } } }

//***** // Student Body.java Author: Lewis/Loftus // // Demonstrates the use of an aggregate class. // public class Student Body { //---- // Creates some Address and Student objects and prints them. //------ public static void main (String[] args) { Address school = new Address ("800 Lancaster Ave.", "Villanova", "PA", 19085); Address jHome = new Address ("21 Jump Street", "Lynchburg", "VA", 24551); Student john = new Student ("John", "Smith", jHome, school); Address mHome = new Address ("123 Main Street", "Euclid", "OH", 44132); Student marsha = new Student ("Marsha", "Jones", mHome, school); System.out.println (john); System.out.println(); System.out.println (marsha); }}