Create A Program to Implement the Knowledge of Inheritance in Java Assignment Solution

Instructions

Objective

Write a program to implement inheritance in java language.

Requirements and Specifications

Assignment: Write a java assignment program to practice with the use of inheritance in Java. 
 
Constraints: 
• Do not use break/continue in your loops. 
• Do not use the System.exit() method to exit the program. 
• All member attributes must be defined as private. 
• All member methods must be defined as public. 
Process: 


Define the utility Class ExamScore:

The class should have 2 private instance fields to store the name of an exam and the 
score for an exam. Also provide the following methods: 
 
• A no-arg constructor to initialize the instance variables to values of your choice. 
• A Constructor with 2 parameters to initialize the instance variables to the arguments 
indicated in the parameter list of the constructor. 
• Appropriate methods to set the value of each of the private instance fields. 
• Appropriate methods to get the value of each of the private instance fields. 
• A toString() method used to display the values of the object using the format: “Exam 
Name: “ followed by the name, followed by “ Score: “, followed by the score.

Define the utility Class StudentScore that inherits from the ExamScore and has one 
attribute to store the identification number for the student. 
• A no-arg constructor to initialize the instance variable to a value of your choice. 
• A Constructor with 1 parameter to initialize the instance variables to the argument 
indicated in the parameter list of the constructor. 
• Appropriate methods to set the value of each of the private instance field. 
• Appropriate methods to get the value of each of the private instance field. 
• A toString() method used to display the identification number along with the Exam 
score information inherited from the ExamScore information. 
3. Write a main program (test class) to test various operations on the objects of the ExamScore 
and StudentScore classes. Perform a series of operations to test each of the methods and the 
constructors. In addition, show how to define an array of N (ask the user for number of 
objects to create) StudentScore objects from the StudentScore class and show the 
functionality of the class with your array. Show how to populate the array with name: FINAL 
PROJECT, a random value between 1 and 100 to score, and a random number between 100 and 
1000 to identification number. Make sure to use loops for processing arrays.

Write a java assignment program (test class) to test various operations on the objects of the ExamScore 
and StudentScore classes. Perform a series of operations to test each of the methods and the 
constructors. In addition, show how to define an array of N (ask the user for number of 
objects to create) StudentScore objects from the StudentScore class and show the 
functionality of the class with your array. Show how to populate the array with name: FINAL 
PROJECT, a random value between 1 and 100 to score, and a random number between 100 and 
1000 to identification number. Make sure to use loops for processing arrays.

Source Code

EXAM SCORE public class ExamScore { private String examName; private double score; public ExamScore() { this("Exam 1", 100.0); } public ExamScore(String examName, double score) { this.examName = examName; this.score = score; } public String getExamName() { return examName; } public void setExamName(String examName) { this.examName = examName; } public double getScore() { return score; } public void setScore(double score) { this.score = score; } @Override public String toString() { return "Exam Name: " + examName + " Score: " + score; } } STUDENT public class StudentScore extends ExamScore { private int studentNumber; public StudentScore() { this(1000); } public StudentScore(int studentNumber) { this.studentNumber = studentNumber; } public int getStudentNumber() { return studentNumber; } public void setStudentNumber(int studentNumber) { this.studentNumber = studentNumber; } @Override public String toString() { return super.toString() + " Identification Number: " + studentNumber; } } TEST import java.util.Random; import java.util.Scanner; public class Test { public static void main(String[] args) { ExamScore e1 = new ExamScore(); System.out.println(e1); StudentScore s1 = new StudentScore(); System.out.println(s1); try(Scanner scanner = new Scanner(System.in)) { System.out.println("Enter the name of an exam and the corresponding score"); String examName = scanner.nextLine(); double score = Double.parseDouble(scanner.nextLine()); e1.setExamName(examName); e1.setScore(score); System.out.println("just updated information for an exam"); System.out.println("updated exam name: " + e1.getExamName()); System.out.println("updated score: " + e1.getScore()); System.out.println(e1); System.out.println("Enter the identification number for a student"); int studentId = Integer.parseInt(scanner.nextLine()); s1.setStudentNumber(studentId); System.out.println("Enter the name of an exam and the corresponding score for: " + s1.getStudentNumber()); examName = scanner.nextLine(); score = Double.parseDouble(scanner.nextLine()); s1.setExamName(examName); s1.setScore(score); System.out.println(s1); System.out.println(); System.out.println("Enter size of test data array"); int N = Integer.parseInt(scanner.nextLine()); StudentScore[] data = new StudentScore[N]; Random random = new Random(); for (int i = 0; i data[i] = new StudentScore(random.nextInt(1000)); data[i].setExamName("FINAL PROJECT"); data[i].setScore(random.nextDouble() * 100); } for (int i = 0; i System.out.println(data[i]); } } } }