Question

A. Create a CollegeCourse class. The class contains fields for the course ID (for example, CIS 210), credit hours (for example, 3), and a letter grade (for example, A). Include get and set methods for each field. Create a Student class containing an ID number and an array of five CollegeCourse objects.

Create a get and set method for the Student ID number. Also create a get method that returns one of the Student’s CollegeCourses; the method takes an integer argument and returns the CollegeCourse in that position (0 through 4). Next, create a set method that sets the value of one of the Student’s CollegeCourse objects; the method takes two arguments—a CollegeCourse and an integer representing the CollegeCourse’s position (0 through 4).

B. Write an application that prompts a professor to enter grades for five different courses each for 10 students. Prompt the professor to enter data for one student at a time, including student ID and course data for five courses. Use prompts containing the number of the student whose data is being entered and the course number—for example, Enter ID for student #1, and Enter course ID #5. Verify that the professor enters only A, B, C, D, or F for the grade value for each course. After all the data has been entered, display all the information in order by student then course as shown:

Student #1  ID #101
CS1 1  -- credits. Grade is A
CS2 2  -- credits. Grade is B
CS3 3  -- credits. Grade is C
CS4 4  -- credits. Grade is D
CS5 5  -- credits. Grade is F

CollegeCourse.java

public class CollegeCourse {
private String courseID;
private int credits;
private char grade;
public String getID() {
}
public int getCredits() {
}
public char getGrade() {
}
public void setID(String idNum) {
}
public void setCredits(int cr) {
}
public void setGrade(char gr) {
}
}

InputGrades.java

import java.util.*;
public class InputGrades {
public static void main(String[] args) {
// Write your code here
}
}

Student.java

public class Student {
private int stuID;
private CollegeCourse[] course = new CollegeCourse[5];

public int getID() {
}
public CollegeCourse getCourse(int x) {
}

public void setID(int idNum) {
}
public void setCourse(CollegeCourse c, int x) {
}
}

Answer 1

CollegeCourse.java

public class CollegeCourse {
  
   private String courseID;
   private int credits;
   private char grade;
   public String getCourseID() {
       return courseID;
   }
   public void setCourseID(String courseID) {
       this.courseID = courseID;
   }
   public int getCredits() {
       return credits;
   }
   public void setCredits(int credits) {
       this.credits = credits;
   }
   public char getGrade() {
       return grade;
   }
   public void setGrade(char grade) {
       this.grade = grade;
   }

}

Student.java

public class Student {
   private int stuID;
   private CollegeCourse[] course = new CollegeCourse[5];
   public int getStuID() {
       return stuID;
   }
   public void setStuID(int stuID) {
       this.stuID = stuID;
   }
   public CollegeCourse getCourse(int x)
   {
       return course[x];
   }
   public void setCourse(CollegeCourse c,int x)
   {
       course[x] = c;
   }

}

InputGrades.java

import java.util.Scanner;

public class InputGrades {

   public static void main(String[] args) {
      
       Student[] s = new Student[10];
       Scanner sc = new Scanner(System.in);
       CollegeCourse c = new CollegeCourse();
       for(int i=0;i<10;i++)
       {
           System.out.println("Enter ID for Student #"+(i+1));
           s[i] = new Student();
           s[i].setStuID(sc.nextInt());
          
           for(int j=0;j<5;j++)
           {
               System.out.println("Enter course ID #"+(j+1));
               c.setCourseID(sc.next());
               System.out.println("Enter credits for "+c.getCourseID());
               c.setCredits(sc.nextInt());
               System.out.println("Enter grade for "+c.getCourseID());
               c.setGrade(sc.next().charAt(0));
               s[i].setCourse(c, j);
              
           }
       }
      
       for(int i=0;i<1;i++)
       {
           System.out.println("Student #"+(i+1) +" ID #"+s[i].getStuID() );
           for(int j=0;j<5;j++)
           {
               System.out.println(s[i].getCourse(j).getCourseID()+ " "+s[i].getCourse(j).getCredits()+" credits.Grade is " +s[i].getCourse(j).getGrade());
           }
       }

   }

}

Output

Enter ID for student #1 101 Enter course ID #1 CS101 Enter credits for cs101 Enter grade for cs101 Enter course ID #2 cs102 Enter credits for cs102 Enter grade for cs102 Enter course ID #3 cs103 Enter credits for cs103 Enter grade for cs103 Enter course ID #4 CS104 Enter credits for cs104 Enter grade for cs104 Enter course ID #5 cs105 Enter credits for cs105 Enter grade for cs105 Student #1 ID #101 cs105 3credits.Grade isA cs105 3credits.Grade isA cs105 3credits.Grade isA cs105 3credits.Grade isA cs105 3credits.Grade isA

*output has been taken for only one student instead of 10, but code is working for 10 students also. you need not change anything*