Jave Program Pratice: (The Person, Student, Employee, Faculty, and Staff classes

Question

Jave Program Pratice:

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

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 program that creates a Person, Student, Employee, Faculty, and Staff, and invokes their toString() methods.

Explanation / Answer

/**
* @author Srinivas Palli
*
*/
public class Person {
   public String name;
   public String address;
   public String phone;
   public String email;

   /**
   * @param name
   * @param address
   * @param phone
   * @param email
   */
   public Person(String name, String address, String phone, String email) {
       this.name = name;
       this.address = address;
       this.phone = phone;
       this.email = email;
   }

   /* (non-Javadoc)
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       return this.getClass().getName() + " " + name;
   }
}

/**
* @author Srinivas Palli
*
*/
public class Student extends Person {

   public final String CLASS_STATUS;

   /**
   * @param name
   * @param address
   * @param phone
   * @param email
   * @param classStatus
   */
   public Student(String name, String address, String phone, String email,
           String classStatus) {
       super(name, address, phone, email);
       CLASS_STATUS = classStatus;
   }
}

/**
* @author Srinivas Palli
*
*/
public class Employee extends Person {
   public String office;
   public double salary;
   public String dateHired;

   /**
   * @param name
   * @param address
   * @param phone
   * @param email
   * @param dateHired
   */
   public Employee(String name, String address, String phone, String email,
           String dateHired) {
       super(name, address, phone, email);
   }
}

/**
* @author Srinivas Palli
*
*/
public class Faculty extends Employee {
   public String officeHours;
   public int rank;

   /**
   * @param name
   * @param address
   * @param phone
   * @param email
   * @param dateHired
   */
   public Faculty(String name, String address, String phone, String email,
           String dateHired) {
       super(name, address, phone, email, dateHired);
   }
}

/**
* @author Srinivas Palli
*
*/
public class Staff extends Employee {
   public String title;

   /**
   * @param name
   * @param address
   * @param phone
   * @param email
   * @param dateHired
   */
   public Staff(String name, String address, String phone, String email,
           String dateHired) {
       super(name, address, phone, email, dateHired);
   }
}

/**
* @author Srinivas Palli
*
*/
public class TestPerson {

   /**
   * @param args
   */
   public static void main(String[] args) {
       Person person = new Person("Srinivas", "Location 1", "9088776221",
               "srinivas.der@gmail.com");
       Person student = new Student("Rajesh", "Location 2", "9088776221",
               "srinivas.der@gmail.com", "junior");
       Person employee = new Employee("Pavan", "Location 3", "9088776221",
               "srinivas.der@gmail.com", "12/23/2015");
       Person faculty = new Faculty("Kishore", "Location 4", "9088776221",
               "srinivas.der@gmail.com", "11/12/2015");
       Person staff = new Staff("Akshaya", "Location 4", "9088776221",
               "srinivas.der@gmail.com", "10/10/2015");
       // print using to string
       System.out.println(person.toString() + " ");
       System.out.println(student.toString() + " ");
       System.out.println(employee.toString() + " ");
       System.out.println(faculty.toString() + " ");
       System.out.println(staff.toString() + " ");
   }
}

OUTPUT:
Person
Srinivas

Student
Rajesh

Employee
Pavan

Faculty
Kishore

Staff
Akshaya

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