Question

Create an abstract Student class for Parker University. The class contains fields for student ID number, last name, and annual tuition. Include a constructor that requires parameters for the ID number and name. Include get and set methods for each field; the setTuition() method is abstract.

Create three Student subclasses named UndergraduateStudent, GraduateStudent, and StudentAtLarge, each with a unique setTuition() method. Tuition for an UndergraduateStudent is $4,000 per semester, tuition for a GraduateStudent is $6,000 per semester, and tuition for a StudentAtLarge is $2,000 per semester.

----------------------------------------------------------------------------------------

public class GraduateStudent extends Student
{
public static final double GRAD_TUITION = 6000;
public GraduateStudent(String id, String name)
{
// write your code here
}
public void setTuition()
{
tuition = GRAD_TUITION;
}
}

----------------------------------------------------------------------------------------

public abstract class Student
{
private String id;
private String lastName;
protected double tuition;
public Student(String id, String name)
{
// write your code here
}
public void setId(String idNum)
{
// write your code here
}
public void setLastName(String name)
{
// write your code here
}
public String getId()
{
// write your code here
}
public String getLastName()
{
// write your code here
}
public double getTuition()
{
// write your code here
}
public abstract void setTuition();
}

----------------------------------------------------------------------------------------

public class StudentAtLarge extends Student
{
public static final double SAL_TUITION = 2000;
public StudentAtLarge (String id, String name)
{
// write your code here
}
public void setTuition()
{
tuition = SAL_TUITION;
}
}

----------------------------------------------------------------------------------------

public class StudentDemo
{
public static void main(String[] args)
{
Student students[] = new Student[6];
int i;
students[0] = new UndergraduateStudent("111", "Lambert");
students[1] = new UndergraduateStudent("122", "Lembeck");
students[2] = new GraduateStudent("233", "Miller");
students[3] = new GraduateStudent("256", "Marmon");
students[4] = new StudentAtLarge("312", "Nichols");
students[5] = new StudentAtLarge("376", "Nussbaum");
for(i = 0; i < students.length; ++i)
System.out.println("\nStudent # " +
students[i].getId() + " Name: " +
students[i].getLastName() + " Tuition: " +
students[i].getTuition() + " per year");
}
}

----------------------------------------------------------------------------------------

public class UndergraduateStudent extends Student
{
public static final double UNDERGRAD_TUITION = 4000;
public UndergraduateStudent(String id, String name)
{
// write your code here
}
public void setTuition()
{
tuition = UNDERGRAD_TUITION;
}
}

----------------------------------------------------------------------------------------

FILETREE Instructions - Studen... X Studen... X Studen... X Underg... X Gradua... X + > Terminal x + 1 public class Graduate Student extends Student sandbox $ -/sandbox Graduate Student..... Student.java StudentAtLarge.... Student Demo.java Undergraduate St... Create an abstract Student class for Parker University. The class contains fields for student ID number, last name, and annual tuition. Include a constructor that requires parameters for the ID number and name. Include get and set methods for each field; the setTuition() method is abstract. public static final double GRAD_TUITION = 6000; public Graduate Student(String id, String name) // write your code here public void setTuition() tuition = GRAD_TUITION; V Create three Student subclasses named Undergraduate Student, Graduate Student, and StudentAtLarge , each with a unique setTuition() method. Tuition for an UndergraduateStudent is $4,000 per semester, tuition for a Graduate Student is $6,000 per semester, and tuition for a StudentAtlarge is $2,000 per semester. Grading Write your Java code in the area on the right. Use the Run button to compile and run the code. Clicking the Run Checks button will run pre-configured tests against your code to calculate a grade. Once you are happy with your results, click the Submit button to record your score.

Answer 1

//----------------------------------------------------------------------------------------

public class GraduateStudent extends Student {

public static final double GRAD_TUITION = 6000;

public GraduateStudent(String id, String name) {

// write your code here

super(id, name);

setTuition();

}

public void setTuition() {

tuition = GRAD_TUITION;

}

}

// ----------------------------------------------------------------------------------------

public abstract class Student {

private String id;

private String lastName;

protected double tuition;

public Student(String id, String name) {

// write your code here

this.id = id;

this.lastName = name;

}

public void setId(String idNum) {

// write your code here

this.id = idNum;

}

public void setLastName(String name) {

// write your code here

this.lastName = name;

}

public String getId() {

// write your code here

return id;

}

public String getLastName() {

// write your code here

return lastName;

}

public double getTuition() {

// write your code here

return tuition;

}

public abstract void setTuition();

}

//----------------------------------------------------------------------------------------

public class StudentAtLarge extends Student {

public static final double SAL_TUITION = 2000;

public StudentAtLarge(String id, String name) {

// write your code here

super(id, name);

setTuition();

}

public void setTuition() {

tuition = SAL_TUITION;

}

}

// ----------------------------------------------------------------------------------------

public class StudentDemo {

public static void main(String[] args) {

Student students[] = new Student[6];

int i;

students[0] = new UndergraduateStudent("111", "Lambert");

students[1] = new UndergraduateStudent("122", "Lembeck");

students[2] = new GraduateStudent("233", "Miller");

students[3] = new GraduateStudent("256", "Marmon");

students[4] = new StudentAtLarge("312", "Nichols");

students[5] = new StudentAtLarge("376", "Nussbaum");

for (i = 0; i < students.length; ++i)

System.out.println("\nStudent # " + students[i].getId() + " Name: " + students[i].getLastName()

+ " Tuition: " + students[i].getTuition() + " per year");

}

}

// ----------------------------------------------------------------------------------------

public class UndergraduateStudent extends Student {

public static final double UNDERGRAD_TUITION = 4000;

public UndergraduateStudent(String id, String name) {

// write your code here

super(id, name);

setTuition();

}

public void setTuition() {

tuition = UNDERGRAD_TUITION;

}

}

====================================================

SEE OUTPUT

- - - - - - - - - - - - - - - - - - - 77 // ---------------------------- 78 79 public class Student Demo { 80 public static void main(String[] args) { Student students[] = new Student[6]; int i; students[0] = new UndergraduateStudent("111", "Lambert"); students[1] = new UndergraduateStudent("122", "Lembeck"); students[2] = new Graduate Student("233", "Miller"); students[3] = new GraduateStudent("256", "Marmon"); students[4] = new StudentAt Large("312", "Nichols"); students[5] = new StudentAtLarge("376", "Nussbaum"); for (i = 0; i < students.length; ++i) System.out.println("\nStudent # " + students[i].getId() + " Name: " + students[i].getLastName + " Tuition: " + students[i].getTuition() + " per year"); // ------------------------------ 96 97 class Undergraduate Student extends Student { public static final double UNDERGRAD_TUITION = 4000; 98 Console X <terminated > Student Demo [Java Application] /Library/Java/JavaVirtual Machines/jdk1.8.0_202.jdk/Contents/Home/bin/java (13-Oct-2019, 3 Student # 111 Name: Lambert Tuition: 4000.0 per year Student # 122 Name: Lembeck Tuition: 4000.0 per year Student # 233 Name: Miller Tuition: 6000.0 per year Student # 256 Name: Marmon Tuition: 6000.0 per year Student # 312 Name: Nichols Tuition: 2000.0 per year Student # 376 Name: Nussbaum Tuition: 2000.0 per year

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