Question

The project description: As a programmer, you have been asked to write a Java application, using OOP concepts, for a Hospital with the following requirements: • The Hospital has several employees and each one of them has an ID (int), name (string), address (string), mobile phone number (string), email (string) and salary (double) with suitable data types. • The employees are divided into: o Administration staff: who have in addition to the previous information their position (string). o Doctor: who have also a rank (string) and specialty (string). The project requirements: • You will need to create all the needed Java classes with all the required information. • You have to apply all the OOP (Object Oriented Programming) concepts that we have covered in this module (i.e. inheritance, polymorphism, interface and collections) • Include a Microsoft Word document (name it as readme.doc) that includes several screenshots of your Netbeans IDE application GUI interface as well as the output screenshot results. Provide all assumptions that you have made during design and implementation. • Include the whole Netbeans Java project with all source codes. Write as much comments as possible to document your source codes. At the end, you will need to create a testing class (e.g. Hospital.java) with the static main() method with the following requirements: • It must have initial fixed collections of working staff (at least 3 administration staffs and 2 doctors) • The program will print a selection screen where the user can choose the operation he/she wants to perform. The selection screen will be repeated after each selection until the staff type the number 4 to completely exit from the program: 1. Add an administration staff (by providing all her/his information) to the list of all administration staff 2. Add a doctor (by providing all her/his information) to the list of all doctors 3. Print all working staff (remember to differentiate between administration staff and doctors in the output printout 4. Exit the program

Answer 1

//Hospital Application using Java (To demonstrate Object Oriented Programming concepts)

Folders/Files Structure

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

########################################################################################

Employee.java

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

package com.test;

/**
* @author user
*
*         This is Employee class it is super class for AdministrativeStaff
*         class and Doctor class
*/
public class Employee {
   /*
   * id is an integer type variable, holds id of the employee name is a String
   * type,holds name of the employee address is a String type,holds address of
   * the employee mobileNumber is a String type,holds mobile number of the
   * Employee email is a String type,holds email of the Employee salary is a
   * String type, holds salary of the Employee
   */
   public int id;
   public String name;
   public String address;
   public String mobileNumber;
   public String email;
   public double salary;

   /*
   * This is 6 argument Employee constructor and it will initialize all the
   * instance variables of Employee class
   */
   public Employee(int id, String name, String address, String mobileNumber, String email, double salary) {
       this.id = id;
       this.name = name;
       this.address = address;
       this.mobileNumber = mobileNumber;
       this.email = email;
       this.salary = salary;
   }

   /*
   * getId() is a getter method and it will return id
   */
   public int getId() {
       return id;
   }

   /*
   * setId() is a setter method and it will modify the id
   */
   public void setId(int id) {
       this.id = id;
   }

   /*
   * getName() is a getter method and it will return name
   */
   public String getName() {
       return name;
   }

   /*
   * setName() is a setter method and it will modify the name
   */
   public void setName(String name) {
       this.name = name;
   }

   /*
   * getAddress() is a getter method and it will return address
   *
   **/
   public String getAddress() {
       return address;
   }

   /*
   * setAddress() is a setter method and it will modify the address
   */
   public void setAddress(String address) {
       this.address = address;
   }

   /*
   * getMobileNumber() is a getter method and it will return mobileNumber
   */

   public String getMobileNumber() {
       return mobileNumber;
   }

   /*
   * setMobileNumber() is a setter method and it will modify the mobileNumber
   */
   public void setMobileNumber(String mobileNumber) {
       this.mobileNumber = mobileNumber;
   }

   /*
   * getEmail() is a getter method and it will return email
   */
   public String getEmail() {
       return email;
   }

   /*
   * setEmail() is a setter method and it will modify the email
   */
   public void setEmail(String email) {
       this.email = email;
   }

   /*
   * getSalary() is a getter method and it will return salary
   */
   public double getSalary() {
       return salary;
   }

   /*
   * setSalary() is a setter method and it will modify the salary
   */
   public void setSalary(double salary) {
       this.salary = salary;
   }

}

#############################################################################

AdministrativeStaff.java

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

package com.test;

/**
* This is AdministrativeStaff class
*/
public class AdministrativeStaff extends Employee {

   /*
   * position is a String type, holds position of the staff
   */
   public String position;

   /*
   * getPosition() is a getter method and it will return position
   */
   public String getPosition() {
       return position;
   }

   /*
   * setPosition() is a setter method and it will update position
   */
   public void setPosition(String position) {
       this.position = position;
   }

   /*
   * This 7 argument constructor and it will initialize the all the instance
   * variables of the AdministrativeStaff class
   */
   public AdministrativeStaff(int id, String name, String address, String mobileNumber, String email, double salary,
           String position) {
       // We are calling super class constructor
       super(id, name, address, mobileNumber, email, salary);
       this.position = position;
   }

}

######################################################################

Doctor.java

========

package com.test;
/*
* This is Doctor class
* */

public class Doctor extends Employee {
   /*
   * rank is a String type, holds rank of the Doctor speciality is a String
   * type,holds speciality of the Doctor
   */
   public String rank;
   public String speciality;

   /*
   * This is 8 argument constructor and it will initialize all the instance
   * variables of Doctor class
   */
   public Doctor(int id, String name, String address, String mobileNumber, String email, double salary, String rank,
           String speciality) {
       // we are calling super class constructor
       super(id, name, address, mobileNumber, email, salary);
       this.rank = rank;
       this.speciality = speciality;
   }

   /*
   * getRank() is a getter method and it will return rank
   */
   public String getRank() {
       return rank;
   }

   /*
   * setRank() is a setter method and it will update the rank
   */
   public void setRank(String rank) {
       this.rank = rank;
   }

   /*
   * getSpeciality() is a getter method and it will return speciality
   */
   public String getSpeciality() {
       return speciality;
   }

   /*
   * setSpeciality() is a setter method and it will update the speciality
   */
   public void setSpeciality(String speciality) {
       this.speciality = speciality;
   }

}

###################################################################

Hospital.java

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

package com.test;

/**
* This is Hospital class( main class)
* */
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Hospital {

   public static void main(String[] args) {
       // Creating Scanner class object to get/read the data from keyboard
       Scanner sc = new Scanner(System.in);

       // Creating List Object to hold the Employee Objects
       List<Employee> workingStaff = new ArrayList<>();
       /*
       * creating 5 Hospital Staff Objects i.e. 3 AdministrativeStaff Objects
       * and 2 Doctor Objects and Added into list Object.(workingStaff)
       */
       Employee emp = new AdministrativeStaff(101, "AAA", "Hyderabad", "9999", "[email protected]", 20000.00, "Admin");
       workingStaff.add(emp);
       emp = new AdministrativeStaff(102, "BBB", "Hyderabad", "8888", "[email protected]", 30000.00, "HR");
       workingStaff.add(emp);
       emp = new AdministrativeStaff(103, "CCC", "Hyderabad", "7777", "[email protected]", 10000.00, "Driver");
       workingStaff.add(emp);
       emp = new Doctor(1001, "DDD", "Hyderabad", "6666", "[email protected]", 50000.00, "Senior", "Cardiologist");
       workingStaff.add(emp);
       emp = new Doctor(1002, "EEE", "Hyderabad", "5555", "[email protected]", 60000.00, "Junior", "Dermatologist");
       workingStaff.add(emp);

       /*
       * Recursively we are displaying the Menu options for User selection
       */
       while (true) {
           System.out.println("1.Add an administration staff");
           System.out.println("2.Add an doctor");
           System.out.println("3.Print all working staff");
           System.out.println("4.Exit");
           System.out.println("Enter your choice:");
           int choice = sc.nextInt();
           int id;
           String name;
           String address;
           String mobileNumber;
           String email;
           double salary;
           String position;
           String rank;
           String speciality;

           switch (choice) {
           case 1:
               // Reading the Administrative staff details
               System.out.println("Enter Administration staff details");
               System.out.println("Enter staff id");
               id = sc.nextInt();
               System.out.println("Enter staff name");
               name = sc.next();
               System.out.println("Enter staff address");
               address = sc.next();
               System.out.println("Enter staff mobile Number");
               mobileNumber = sc.next();
               System.out.println("Enter staff email");
               email = sc.next();
               System.out.println("Enter staff salary");
               salary = sc.nextDouble();
               System.out.println("Enter staff position");
               position = sc.next();
               // creating AdministraveStaff object by passing all the required
               // details
               emp = new AdministrativeStaff(id, name, address, mobileNumber, email, salary, position);
               // adding emp object to List object
               workingStaff.add(emp);
               break;
           case 2:
               // Reading doctor details from keyboard
               System.out.println("Enter Doctor details");
               System.out.println("Enter doctor id");
               id = sc.nextInt();
               System.out.println("Enter doctor name");
               name = sc.next();
               System.out.println("Enter doctor address");
               address = sc.next();
               System.out.println("Enter doctor mobile Number");
               mobileNumber = sc.next();
               System.out.println("Enter doctor email");
               email = sc.next();
               System.out.println("Enter doctor salary");
               salary = sc.nextDouble();
               System.out.println("Enter doctor rank");
               rank = sc.next();
               System.out.println("Enter doctor speciality");
               speciality = sc.next();
               // Creating doctor object by passing required details
               emp = new Doctor(id, name, address, mobileNumber, email, salary, rank, speciality);
               // Adding emp Object to List object
               workingStaff.add(emp);
               break;

           case 3:
               // Printing all staff details and differentiating
               // AdministrativeStaff and Doctor
               for (Employee employee : workingStaff) {
                   if (employee instanceof AdministrativeStaff) {
                       System.out.println("****Administrative staff***");
                       System.out.println("Id:" + employee.getId());
                       System.out.println("Name:" + employee.getName());
                       System.out.println("Address :" + employee.getAddress());
                       System.out.println("Mobile Number: " + employee.getMobileNumber());
                       System.out.println("Email : " + employee.getEmail());
                       System.out.println("Salary :" + employee.getSalary());
                       System.out.println("Position :" + ((AdministrativeStaff) employee).getPosition());
                   } else {
                       System.out.println("****Docotor****");
                       System.out.println("Id:" + employee.getId());
                       System.out.println("Name:" + employee.getName());
                       System.out.println("Address :" + employee.getAddress());
                       System.out.println("Mobile Number: " + employee.getMobileNumber());
                       System.out.println("Email : " + employee.getEmail());
                       System.out.println("Salary :" + employee.getSalary());
                       System.out.println("Rank :" + ((Doctor) employee).getRank());
                       System.out.println("Speciality :" + ((Doctor) employee).getSpeciality());
                   }
               }

               break;

           case 4:
               // Exiting/Terminating from the loop
               System.exit(0);

           }

       }

   }

}

#############################################

Test Results/ output

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

Note:

Please let me know if you have any doubts/concerns