I'm working on a grading program that will require the use of a couple classes. The program contains a list of "program assignments" which there are 5, and 3 test scores. I'm stuck writing the average methods Along with the total exam scores/program scores. Any help will be appreciated! Here's the classes I'm using... Thanks in advance!!
Driver Class:
public class Driver {
public static void main(String[] args) {
int[] stud1ExamScores = {56, 76, 86};
int[] stud1ProgramScores = {10, 15, 16, 18, 10};
Student student1 = new UndergraduateStudent("The", "Devil", "666", "Undergraduate", stud1ExamScores, stud1ProgramScores);
int[] stud2ExamScores = {100, 90, 100};
int[] stud2ProgramScores = {17, 19, 20, 18, 20};
Student student2 = new GraduateStudent("Joe", "Blow", "123", "Graduate", stud2ExamScores, stud2ProgramScores, 89);
Student[] studentArray= {student1, student2};
Course course = new Course214Section1(studentArray);
System.out.println();
course.populateExamAverages();
course.printExamAverages();
System.out.println();
course.populateProgramAverages();
course.printProgramAverages();
int[] stud3ExamScores = {70, 80, 90};
int[] stud3ProgramScores = {10, 20, 20, 20, 30};
Student student3 = new UndergraduateStudent("Joe", "College", "321", "Freshman", stud3ExamScores, stud3ProgramScores);
int[] stud4ExamScores = {80, 80, 80};
int[] stud4ProgramScores = {10, 10, 10, 10, 10};
int termPaper = 80;
Student student4 = new GraduateStudent("Bob", "Barker", "456", "Graduate", stud4ExamScores, stud4ProgramScores, termPaper);
Student[] myArray = {student3, student4};
course = new Course483Section1(myArray);
System.out.println();
course.populateExamAverages();
course.printExamAverages();
System.out.println();
course.populateProgramAverages();
course.printProgramAverages();
System.out.println();
Student[] studArray = course.getStudentArray();
for (int i = 0; i < studArray.length; i++) {
System.out.print(studArray[i] + " ");
System.out.println(studArray[i].totalPoints() + " " + studArray[i].letterGrade());
}
}
}Student Class:
public abstract class Student {
private String firstName;
private String lastName;
private String techId;
private String classStanding;
private int[] examScores;
private int[] programScores;
public Student(String firstName, String lastName, String techId, String classStanding, int[] examScores, int[] programScores) {
this.firstName = firstName;
this.lastName = lastName;
this.techId = techId;
this.classStanding = classStanding;
this.examScores = examScores;
this.programScores = programScores;
}
public int totalExamPoints() {
//returns the total number of exam points
}
public int totalProgramPoints() {
//returns the total number of program points
}
public abstract int totalPoints();
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public void setTechId(String techId) {
this.techId = techId;
}
public void setClassStanding(String classStanding) {
this.classStanding = classStanding;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getTechId() {
return techId;
}
public String getClassStanding() {
return classStanding;
}
public void setExamScores(int[] examScores) {
this.examScores = examScores;
}
public void setProgramScores(int[] programScores) {
this.programScores = programScores;
}
public int[] getProgramScores() {
return programScores;
}
public int[] getExamScores() {
return examScores;
}
public abstract char letterGrade();
}Course Super Class:
public abstract class Course {
private Student[] studentArray;
private double[] examAverages;
private double[] programAverages;
private int numberOfStudents;
public Course(Student[] studentArray) {
this.studentArray = new Student[studentArray.length];
for (int i = 0; i < studentArray.length; i++) {
this.studentArray[i] = studentArray[i];
examAverages = new double[3];
programAverages = new double[5];
numberOfStudents = studentArray.length;
}
}
public Student[] getStudentArray() {
return studentArray;
}
public double[] getExamAverages() {
return examAverages;
}
public double[] getProgramAverages() {
return programAverages;
}
public int getNumberOfStudents() {
return numberOfStudents;
}
public abstract int[] programTotals();
public abstract int[] examTotals();
public abstract void populateExamAverages();
public abstract void populateProgramAverages();
public abstract void printExamAverages();
public abstract void printProgramAverages();
}Course214Section1 class:
public class Course214Section1 extends Course {
public Course214Section1(Student[] studentArray) {
super(studentArray);
}
public int[] programTotals() {
//returns an array containing the total scores for the programs;
}
public void populateProgramAverages() {
//populates the programAverages array inherited from Course
}
public void printProgramAverages() {
for (int i = 0; i < getProgramAverages().length; i++) {
System.out.println("The average score for program " + (i +1) + " is: " + getProgramAverages()[i]);
}
}
public int[] examTotals() {
//returns an array containing the total scores for the exams
}
public void populateExamAverages() {
//populates the examAverages array inherited from Course
}
public void printExamAverages() {
for (int i = 0; i < getExamAverages().length; i++) {
System.out.println("The average score for exam" + (i + 1) + " is: " + getExamAverages()[i]);
}
}
}Course483Section1 class:
public class Course483Section1 extends Course {
public Course483Section1(Student[] studentArray) {
super(studentArray);
}
public int[] programTotals() {
//returns an array containing the total scores for the programs;
}
public void populateProgramAverages() {
//populates the programAverages array inherited from Course
}
public void printProgramAverages() {
for (int i = 0; i < getProgramAverages().length; i++) {
System.out.println("The average score for program " + (i +1) + " is: " + getProgramAverages()[i]);
}
}
public int[] examTotals() {
//returns an array containing the total scores for the exams
}
public void populateExamAverages() {
//populates the examAverages array inherited from Course
}
public void printExamAverages() {
for (int i = 0; i < getExamAverages().length; i++) {
System.out.println("The average score for exam" + (i + 1) + " is: " + getExamAverages()[i]);
}
}
}Graduate Letter:
public class GraduateStudent extends Student {
private int termPaper;
public GraduateStudent(String firstName, String lastName, String techId, String classStanding, int[] examScores, int[] programScores, int termPaper) {
super(firstName, lastName, techId, classStanding, examScores, programScores);
this.termPaper = termPaper;
}
public int totalPoints() {
//returns total number of points this graduate student has earned
}
public char letterGrade() {
// returns a letter grade based on total points.
// 90% of the total points gets an 'A'
//80% of the total points gets a 'B'
//etc.
}
public String toString() {
String returnValue = getFirstName() + " ";
returnValue += getLastName() + " ";
returnValue += getTechId() + " ";
returnValue += getClassStanding();
return returnValue;
}
}Undergraduate Letter:
public class UndergraduateStudent extends Student {
public UndergraduateStudent(String firstName, String lastName, String techId, String classStanding, int[] examScores, int[] programScores) {
super(firstName, lastName, techId, classStanding, examScores, programScores);
}
public int totalPoints() {
//returns the total number of points this undergraduate student has earned
}
public char letterGrade() {
// returns a letter grade based on total points.
// 90% of the total points gets an 'A'
//80% of the total points gets a 'B'
//etc.
}
public String toString() {
String returnValue = getFirstName() + " ";
returnValue += getLastName() + " ";
returnValue += getTechId() + " ";
returnValue += getClassStanding();
return returnValue;
}
}Driver when run should have the following output:
The average score for exam1 is: 75.0
The average score for exam2 is: 80.0
The average score for exam3 is: 85.0
The average score for program 1 is: 10.0
The average score for program 2 is: 15.0
The average score for program 3 is: 15.0
The average score for program 4 is: 15.0
The average score for program 5 is: 20.0
Joe College 321 Freshman 340 B
Bob Barker 456 Graduate 370 C
