Question

What is wrong with this Code? Fix the code errors to run correctly without error. There are four parts for one code, all are small code segments for one question.

public class StudentTest {
public static void main(String[] args){

// Part Time Student Test
Student ft1 = new PartTimeStudent("George", "Bush", "123-12-5678",
1, 2 );
System.out.println(ft1);

Student ft2 = new PartTimeStudent("Abraham", "Lincoln", "001-90-5323",
6, 22 );
System.out.println(ft2);

// Full Time Student Test
Student pt1 = new FullTimeStudent("Nikola", "Tesla", "442-00-0998",
8, 26 );
System.out.println(pt1);

Student pt2 = new FullTimeStudent("Albert", "Einstein", "675-78-2311",
10, 32 );
System.out.println(pt2);
}
}

public class Student {
private String firstName; private String lastName; private String ssn;
private int numberOfCourses; private int numberOfCredits;
private final double HOURLY_RATE = 84.0;

public Student(String firstName, String lastName, String ssn,
int numberOfCourses, int numberOfCredits) {
this.firstName = firstName;
this.lastName = lastName;
this.ssn = ssn;
this.numberOfCourses = numberOfCourses;
this.numberOfCredits = numberOfCredits;
}

public String getFirstName() {
return firstName;
}

public void setFirstName(String firstName) {
this.firstName = firstName;
}

public String getLastName() {
return lastName;
}

public void setLastName(String lastName) {
this.lastName = lastName;
}

public int getNumberOfCourses() {
return numberOfCourses;
}

public void setNumberOfCourses(int numberOfCourses) {
this.numberOfCourses = numberOfCourses;
}

public int getNumberOfCredits() {
return numberOfCredits;
}

public void setNumberOfCredits(int numberOfCredits) {
this.numberOfCredits = numberOfCredits;
}

public String getSSN() {
return ssn;
}

public void setSSN(String ssn) {
this.ssn = ssn;
}

public double calculateCostForSemester(){
return (HOURLY_RATE * numberOfCredits);
}

public String toString(){
return String.format(
"\nName: %s %s \n SSN: %s \n Course Count: %d \n Credit Hours: %d",
getFirstName(), getLastName(), getSSN(),
getNumberOfCourses(), getNumberOfCredits());
}
}

public class PartTimeStudent {

private final String STATUS = "Part Time";

public PartTimeStudent(String firstName, String lastName, String ssn,
int numberOfCourses, int numberOfCredits) {

super(firstName, lastName, ssn, numberOfCourses, numberOfCredits );
}

@Override
public double calculateCostForSemester(){

return super.calculateCostForSemester() * .9;
}

@Override
public String toString(){
return String.format(" %s\n Status: %s\n Amount Due: $%.2f",
super.toString(),
STATUS,
calculateCostForSemester());
}
}

public class FullTimeStudent extends Student {

private final String STATUS = "Full Time";

public FullTimeStudent(String firstName, String lastName, String ssn,
int numberOfCourses, int numberOfCredits) {
}

@Override
public String ToString(){
return String.format(" %s\n Status: %s\n Amount Due: $%.2f",
super.toString(),
STATUS,
super.calculateCostForSemester());
}
}

Answer 1

There is no correction in Student.java and StudentTest.java

In PartTimeStudent.java, the correction is

mistake	public class PartTimeStudent
correction	public class PartTimeStudent extends Student

In FullTimeStudent.java, the corrections are

mistake	Constructor is missing call to the super class constructor
correction	super(firstName, lastName, ssn, numberOfCourses, numberOfCredits );
mistake	typographical mistake in  public String ToString()
correction	public string toString()

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