exception Error

Question

I need to solve this :

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”

and Patient class like this :

import java.util.ArrayList;

import java.util.List;

// Defines class Patients

class Patient {

// Instance variables to store patient information

private int patientID;

private String patientName;

private String patientAddress;

private String patientMobileNumber;

private String patientEmail;

private char type;

ArrayList<Service> services;

// Default constructor to assign default value to instance variable

public Patient() {

patientID = 0;

patientName = patientAddress = patientMobileNumber = patientEmail = "";

type = ' ';

services = new ArrayList<Service>();

}

// Parameterized constructor to assign parameter values to instance variables

public Patient(int pID, String pn, String pa, String pm, String pe, char ty, ArrayList<Service> ser) {

patientID = pID;

patientName = pn;

patientAddress = pa;

patientMobileNumber = pm;

patientEmail = pe;

type = ty;

services = new ArrayList<Service>();

services = ser;

}

// Getter method to return patient id

public int getPatientID()

{

return patientID;

}

// Getter method to return patient name

public String getPatientName()

{

return patientName;

}

// Getter method to return patient address

public String getPatientAddress()

{

return patientAddress;

}

// Getter method to return patient mobile number

public String getPatientMobileNumber()

{

return patientMobileNumber;

}

// Getter method to return patient email

public String getPatientEmail()

{

return patientEmail;

}

// Getter method to return patient type

public char getType()

{

return type;

}

// Getter method to return patient services

public ArrayList<Service> getServices()

{

return services;

}

// Setter method to change patient id

public void setPatientID(int pID)

{

patientID = pID;

}

// Setter method to change patient name

public void setPatientName(String pn)

{

patientName = pn;

}

// Setter method to change patient address

public void setPatientAddress(String pa)

{

patientAddress = pa;

}

// Setter method to change patient mobile number

public void setPatientMobileNumber(String pm)

{

patientMobileNumber = pm;

}

// Setter method to change patient email

public void setPatientEmail(String pe)

{

patientEmail = pe;

}

// Setter method to change patient type

public void setType(char ty)

{

type = ty;

}

// Setter method to change patient services

public void setServices(ArrayList<Service> ser)

{

services = ser;

}

// Overrides method toString() to return service information

public String toString()

{

String result = "";

result += "\n Patient ID: " + patientID + "\n Patient Name: " + patientName +

"\n Patient Address: " + patientAddress +

"\n Patient Mobile Number: " + patientMobileNumber +

"\n Patient Email Address: " + patientEmail +

"\n Patient Type: " + type + "\n\n **** Service Availed **** ";

// Loops number of services availed

for(int c = 0; c < services.size(); c++)

result += services.get(c).toString() + "\n";

return result;

}

}// End of class Patients

i need to add this step in above code :

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

class DuplicatePatientException extends Exception

{

DuplicatePatientException( String msg)

{

super(msg);

}

}

//... code continues on

//linear searches for any patient having the new patient id #

if (PatientIndexerFindIndexAt( newPatientID)>=0)

{

throw ( new DuplicatePatientException("duplicate patient exception"));

}