“Hospital Information System” application

Question

rite 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 Hospital also has a set of patients. Each patient is identified by his ID (int), name (string), address (string), mobile phone number (string), email (string), type (A or B) (char) and a set of hospital services (vector or arraylist). • The Hospital has a set of services to be provided to the patients. Each service is identified by ID (int), name (string) and price (double). The patient who is from type A will have a discount 25% of the service price. Assume that all doctors could provide all possible services.

-Every patient could be treated by one doctor and every doctor could treat zero or more patients

- Each patient receives one or more services from the doctor who treats him

At the end, you will need to create a testing class (e.g. Hospital.java) with a 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 project will start by reading a name. If the name is in the administration staff collection, the

program will continue. If it is not, the program will ask for a name again.

• The program will print a selection screen were the administrative staff can choose the operation

he/she wants to perform. The selection screen will be repeated after each selection until the staff

type the number 9 to exit the program:

1. Add a doctor (by providing all her/his information)

2. Add a service (by providing all its information) 3. Add a patient (by providing all her/his information) including all received services IDs (entered by point 2 above)

4. Print all doctors information 5. Print all patients information

6. Display specific doctor data (by reading doctor ID by the user)

7. Display specific patient data (by reading patient ID by the user)

8. Print a specific patient’s bill (by reading the patient ID by the user and then calculating the

total price for all services provided for this patient (could be more than one service for each

patient) 9. Exit the program

• You need to create, use and print a custom exception called DuplicatePateientIdException that

should be thrown when the admin tries to add a new patient using existing patient ID. The message

of the exception should be read as “Invalid patient ID. This patient ID is already used.

Answer 1

I have done most of the legwork for you...

I have given you the classes for the Employee, the Admin, the Doctor,

the Patient, the Service, and the Cross table...

YOU NEED TO BUILD FROM THERE...

There are a lot of design specifications that need

to be agreed upon and discussed.

You aren't allowed to input multiple patients but it's ok

to input mutiple Doctors and Admin Employees with the same

name?

Secondly, how are you supposed to check if the record is

a duplicate or not? Two patients CAN have the same name.

It is VERY possible and LEGAL!

The PATIENT ID # is what distinguishes the two records,

and makes EACH RECORD UNIQUE... REGARDLESS of the name

or anything else for that matter.

Are we supposed to be using a real database, or just

flat text files?

As far the exception goes, here is a sample program that

demonstrates how to create a custom exception, throw it,

and catch it. I have uploaded this source code in

the resources section for you.

If you attempt to input a duplicate integer in the array,

it throws the exception. This THE EXACT SAME THING you

are trying to do.

Send me an email so we can further discuss what is required.

These questions must be answered.

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

import java.lang.RuntimeException;

class CustExTest

{

class DuplicateIDException extends RuntimeException

{

//private or protected data members may be the

//data that caused the exception, invalid entires, etc

DuplicateIDException(String errMsg)

{

super(errMsg);

}

}

public static void main(String args[])

{

int A[]={1,3,5,7,9}; //duplicates not allowed

CustExTest x = new CustExTest();

int n=4;

try

{

int [] _A = x.AddNew(A,n);

if (_A!=null) { System.out.println("Successfully added " + n); }

n=7;

A = x.AddNew(_A,n);//this one will throw the exception

if (A!=null) { System.out.println("Successfully added " + n); }

}

catch (DuplicateIDException ex)

{

System.out.println("Exception occurs: input is "+n);

}

}

//Inserts x at the end of array A; if x is already in A, then throws exception;

//If x is already in A, returns null; otherwise returns the array

public int [] AddNew(int A[], int x) throws DuplicateIDException

{

int [] AReturn=null;

int N=A.length;

boolean found_flag=false;

for (int iLoop=0; iLoop<N; iLoop++)

{

if (A[iLoop]==x)

{

found_flag=true;

break;

}

}

if (!found_flag)

{

//copies

N = A.length;

AReturn = new int[N+1];

for (int iLoop=0; iLoop<N; iLoop++)

{

AReturn[iLoop]=A[iLoop];

}

AReturn[N]=x;

}

else

{

AReturn=null;

String strCulprit = "input = "+x;

throw ( new DuplicateIDException(strCulprit));

}

return(AReturn);

}

}