Question

Java Question

Design a class named Person and its two subclasses named Student and Employee. Make Faculty and Staff subclasses of Employee. A person has a name, address, phone number, and email address. A student has a class status (freshman, sophomore, junior, or senior). Define the status as a constant. An employee has an office, salary, and date hired. Use the Date class to create an object for date hired. A faculty member has office hours and a rank. A staff member has a title. Override the toString method in each class to display the class name and the person’s name. Write a test class that creates a Person, Student, Employee, Faculty, and Staff, and invokes their toString() methods.

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
=================================

// Person.java

public class Person {

// Declaring variables

private String name, address;

private String phoneNo;

private String email;

// Zero Argument Constructor

public Person() {

super();

}

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

super();

this.name = name;

this.address = address;

this.phoneNo=phoneNo;

this.email=email;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getAddress() {

return address;

}

public void setAddress(String address) {

this.address = address;

}

public String getPhoneNo() {

return phoneNo;

}

public void setPhoneNo(String phoneNo) {

this.phoneNo = phoneNo;

}

public String getEmail() {

return email;

}

public void setEmail(String email) {

this.email = email;

}

@Override

public String toString() {

return "Name=" + name + ", Address=" + address + ", Phone No="

+ phoneNo + ", email=" + email;

}

}

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

// Student.java

public class Student extends Person {
private final String classStatus;
public Student(String classStatus) {
this.classStatus = classStatus;
}
public Student(String name, String address,String phoneNo,String email, String classStatus) {
super(name, address,phoneNo,email);
this.classStatus = classStatus;
}
public String toString() {
return super.toString() + " Satus= " + this.classStatus;
}
}

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

// MyDate.java

public class MyDate {

private int year;

private int month;

private int day;

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

super();

this.year = year;

this.month = month;

this.day = day;

}

public int getYear() {

return year;

}

public void setYear(int year) {

this.year = year;

}

public int getMonth() {

return month;

}

public void setMonth(int month) {

this.month = month;

}

public int getDay() {

return day;

}

public void setDay(int day) {

this.day = day;

}

@Override

public String toString() {

return month+"/"+day+"/"+year;

}

}

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

// Employee.java

public class Employee extends Person {
// Declaring variables
private String office;
private double salary;
private MyDate dateHired;
// Zero Argument Constructor
public Employee() {
super();
}
// Parameterized constructor.
public Employee(String name, String address, String phoneNo,String email, String office, double salary,MyDate datehired) {
super(name, address, phoneNo, email);
this.office = office;
this.salary = salary;
this.dateHired=datehired;
}
// Setters and getters
public String getOffice() {
return office;
}
public void setOffice(String office) {
this.office = office;
}
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
// toString() method displays the contents of the object.
@Override
public String toString() {
return super.toString() + " office=" + office + ", salary=" + salary;
}
}

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

// Faculty.java

public class Faculty extends Employee {

   // Declaring variables

   private int office_hours;
private int rank;
   // Zero Argument Constructor

   public Faculty() {

       super();

   }

   // Parameterized constructor.

   public Faculty(String name, String address, String phoneNo, String email,
           String office, double salary, MyDate datehired,

           int office_hours,int rank) {

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

       this.office_hours = office_hours;
       this.rank=rank;

   }

   // Setters and getters
  

   public int getOffice_hours() {

       return office_hours;

   }

   /**
   * @return the rank
   */
   public int getRank() {
       return rank;
   }

   /**
   * @param rank the rank to set
   */
   public void setRank(int rank) {
       this.rank = rank;
   }

   public void setOffice_hours(int office_hours) {

       this.office_hours = office_hours;

   }

   // toString() method displays the contents of the object.

   @Override
   public String toString() {

       return super.toString() + " office_hours=" + office_hours+", Rank="+rank;

   }

}

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

// Staff.java

public class Staff extends Employee {

// Declaring variables

private String title;

// Zero Argument Constructor

public Staff() {

super();

}

// Parameterized constructor.

public Staff(String name, String address,String phoneNo,String email, String office, double salary,MyDate datehired,

String title) {

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

this.title = title;

}

// Setters and getters

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

// toString() method displays the contents of the object.

@Override

public String toString() {

return super.toString() + " Title=" + title;

}

}

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

// Test.java

import java.util.ArrayList;

public class Test {

   public static void main(String[] args) {

       ArrayList<Person> al = new ArrayList<Person>();

       al.add(new Student("James", "101 Church Street", "9848425879",
               "[email protected]", "Sophomore"));

       al.add(new Employee("Pattinson", "44 That Street", "9848424345",
               "[email protected]", "Accenture", 45000, new MyDate(2014,
                       04, 23)));

       al.add(new Faculty("Williams", "500 Over There Street", "9843567845",
               "[email protected]", "Accenture", 50000, new MyDate(2012, 4,
                       12), 8,3));

       al.add(new Staff("James", "867 Hay Street", "9845677667",
               "[email protected]", "Microsoft", 80000, new MyDate(2014, 05,
                       21), "Janitor"));

       for (int i = 0; i < al.size(); i++)

       {

           if (al.get(i) instanceof Faculty)

               System.out.println("Faculty " + al.get(i).toString());

           else if (al.get(i) instanceof Staff)

               System.out.println("Staff " + al.get(i).toString());

           else if (al.get(i) instanceof Student)

               System.out.println("Student " + al.get(i).toString());

           else if (al.get(i) instanceof Employee)

               System.out.println("Employee " + al.get(i).toString());

       }

   }

}

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

Output:

Student Name=James, Address=101 Church Street, Phone No=9848425879, [email protected] Satus= Sophomore
Employee Name=Pattinson, Address=44 That Street, Phone No=9848424345, [email protected] office=Accenture, salary=45000.0
Faculty Name=Williams, Address=500 Over There Street, Phone No=9843567845, [email protected] office=Accenture, salary=50000.0 office_hours=8, Rank=3
Staff Name=James, Address=867 Hay Street, Phone No=9845677667, [email protected] office=Microsoft, salary=80000.0 Title=Janitor

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