Question

In Java

(The Person, Student, Employee, Faculty, and Staff classes)

Design a class named Person and its two derived classes named Student and Employee. MakeFaculty and Staff derived classes of Employee. A person has a name, address, phone number, and e-mail address. A student has a class status (freshman, sophomore, junior, or senior). An employee has an office, salary, and date hired. Define a class namedMyDate that contains the fields year, month, and day. A faculty member has office hours and a rank. A staff member has a title. Define an abstract to String function in the Person class and override it in each class to display the class name and the person’s name.

Implement the classes. Write a test program that creates a Person, Student, Employee, Faculty, and Staff, and invokes theirtoString() functions.

Answer 1

CODE

abstract class Person {

protected String name, address, phoneNumber;

protected String email;

public Person(String name, String address, String phoneNumber, String email) {

this.name = name;

this.address = address;

this.phoneNumber = phoneNumber;

this.email = email;

}

public abstract String toString();

}

enum status {

freshman,

sophomore,

junior,

senior;

}

class Student extends Person {

protected status st;

public Student(String name, String address, String phoneNumber, String email, status st) {

super(name, address, phoneNumber, email);

this.st = st;

}

public String toString() {

return this.getClass().getSimpleName() + " -> Name: " + this.name;

}

}

class MyDate {

private int day, month, year;

public MyDate(int day, int month, int year) {

this.day = day;

this.month = month;

this.year = year;

}

}

class Employee extends Person {

protected String office;

protected double salary;

protected MyDate datehired;

public Employee(String name, String address, String phoneNumber, String email, String office, double salary,

MyDate datehired) {

super(name, address, phoneNumber, email);

this.office = office;

this.salary = salary;

this.datehired = datehired;

}

public String toString() {

return this.getClass().getSimpleName() + " -> Name: " + this.name;

}

}

class Faculty extends Employee {

private double officeHours;

private String rank;

public Faculty(String name, String address, String phoneNumber, String email, String office, double salary,

MyDate datehired, double officeHours, String rank) {

super(name, address, phoneNumber, email, office, salary, datehired);

this.officeHours = officeHours;

this.rank = rank;

}

public String toString() {

return this.getClass().getSimpleName() + " -> Name: " + this.name;

}

}

class Staff extends Employee {

private String title;

public Staff(String name, String address, String phoneNumber, String email, String office, double salary,

MyDate datehired, String title) {

super(name, address, phoneNumber, email, office, salary, datehired);

this.title = title;

}

public String toString() {

return this.getClass().getSimpleName() + " -> Name: " + this.name;

}

}

public class Main {

public static void main(String[] args) {

Person p1 = new Student("John Doe", "27th Street, Ave Street", "123456", "[email protected]", status.sophomore);

System.out.println(p1);

Person p2 = new Employee("John Doe", "27th Street, Ave Street", "123456", "[email protected]", "sample office", 12456.89, new MyDate(1, 4, 2019));

System.out.println(p2);

Employee e1 = new Staff("John Doe", "27th Street, Ave Street", "123456", "[email protected]", "sample office", 12456.89, new MyDate(1, 4, 2019), "Staff Engineer");

System.out.println(e1);

Employee e2 = new Faculty("John Doe", "27th Street, Ave Street", "123456", "[email protected]", "sample office", 12456.89, new MyDate(1, 4, 2019), 8, "Senior Developer");

System.out.println(e2);

}

}