Question

• Start with code given for Student, StudentOther, StudentUpdate
  1. See code comments
  2. Student has two method that overloads rating
  3. StudentOther extends Student and has one method that overrides rating
  4. StudentUpdate call both classes
  5. Code as required

• public class studentUpdate {
          
          
          public static void main(String[] args) {
  
                  //      instantiate Student object
                  Student s = ?; 
                  
  //              instantiate StudentOther object
                  StudentOther sO = ?; 
          
                  // set the fields
                  s.setStudentName ?;
                  s.setId ?;
                  s.setCredits ?;
                  s.setGpa ?;
                  s.setScholarship ?;
                  s.setCommuter ?;
                  
                  // check input          
                  System.out.println(s.getStudentData());
                  
                  // change this as needed
                  // run rating method 1
                  s.rating( s.getCredits(), s.getGpa() );
                  
                  // run rating method 2
                  s.rating( s.getCredits(), s.getGpa(), s.getScholarship() );
  
                  // run rating method 3
                  s.rating( s.getScholarship(), s.getGpa() );
                  
                  // run rating 4
                  sO.rating( s.getCredits(), s.getGpa() );
                  
                  
          }
  
  }

• public class StudentOther ? Student {
          
  //      @Override       
          // new student rating method - use c and g
          public void rating( ? ) {       
                  System.out.println("This is student rating 4 - Override");
          }
  
  }

• public class Student {
          
          // variables
          public String studentName;                        
          public int id;
          public int credits;      
          public double gpa; 
          public double scholarship;
          public boolean commuter;
          
          // getters and setters
          // select all- access Public
  
          
          // returns all the data in one string
          public String getStudentData()
             {
                return(studentName +  " has a gpa of " +  gpa + " and has completed " + credits + "  credits");
             } 
          
          // student rating method
          // this is the primary method
          public void rating(int c, double g) {
                  System.out.println("Student rating 1 is: " + (c * g));
          }
          
  //      @Overload       
          // overload by count - add double s
          public void rating( ? ) {
                  System.out.println("Student rating 2 is: " + ((c + s) * g) + " Overload by count" );
          }
  
  //      @Overload       
          // overload by type
          public void rating(  ? ) {
                  System.out.println("Student rating 3 is: " + (s * g) + " Overload by type");
          }
          
  
  
  }

Answer 1

Below are the completed classes as per comments:

Student.java

public class Student {

        // variables
        public String studentName;
        public int id;
        public int credits;
        public double gpa;
        public double scholarship;
        public boolean commuter;

        // getters and setters
        // select all- access Public

        // returns all the data in one string
        public String getStudentData() {
                return (studentName + " has a gpa of " + gpa + " and has completed "
                                + credits + "  credits");
        }

        // student rating method
        // this is the primary method
        public void rating(int c, double g) {
                System.out.println("Student rating 1 is: " + (c * g));
        }

        // @Overload
        // overload by count - add double s
        public void rating(int c, double g, double s) {
                System.out.println("Student rating 2 is: " + ((c + s) * g)
                                + " Overload by count");
        }

        // @Overload
        // overload by type
        public void rating(double s, double g) {
                System.out.println("Student rating 3 is: " + (s * g)
                                + " Overload by type");
        }

        public String getStudentName() {
                return studentName;
        }

        public void setStudentName(String studentName) {
                this.studentName = studentName;
        }

        public int getId() {
                return id;
        }

        public void setId(int id) {
                this.id = id;
        }

        public int getCredits() {
                return credits;
        }

        public void setCredits(int credits) {
                this.credits = credits;
        }

        public double getGpa() {
                return gpa;
        }

        public void setGpa(double gpa) {
                this.gpa = gpa;
        }

        public double getScholarship() {
                return scholarship;
        }

        public void setScholarship(double scholarship) {
                this.scholarship = scholarship;
        }

        public boolean isCommuter() {
                return commuter;
        }

        public void setCommuter(boolean commuter) {
                this.commuter = commuter;
        }

}

StudentOther.java

public class StudentOther extends Student {

        // @Override
        // new student rating method - use c and g
        public void rating(int c, double g) {
                System.out.println("This is student rating 4 - Override and the rating is: " + (c * g));
        }

}

StudentUpdate.java

public class StudentUpdate {

        public static void main(String[] args) {

                // instantiate Student object
                Student s = new Student();

                // instantiate StudentOther object
                StudentOther sO = new StudentOther();

                // set the fields
                s.setStudentName("Nitya");
                s.setId(1);
                s.setCredits(32);
                s.setGpa(3.5);
                s.setScholarship(250.50);
                s.setCommuter(true);

                // check input
                System.out.println(s.getStudentData());

                // change this as needed
                // run rating method 1
                s.rating(s.getCredits(), s.getGpa());

                // run rating method 2
                s.rating(s.getCredits(), s.getGpa(), s.getScholarship());

                // run rating method 3
                s.rating(s.getScholarship(), s.getGpa());

                // run rating 4
                sO.rating(s.getCredits(), s.getGpa());

        }
}

Output

Nitya has a gpa of 3.5 and has completed 32 credits
Student rating 1 is: 112.0
Student rating 2 is: 988.75 Overload by count
Student rating 3 is: 876.75 Overload by type
This is student rating 4 - Override and the rating is: 112.0