import java.util.HashMap;

import java.util.Scanner;

$//$ Class to represent a Patient

class Patient $\{$

private String cprNumber; $//$ CPR number of the patient

private String caseHistory; $//$ Case history of the patient

private String nextAppointmentDate; $//$ Date of the next appointment

$//$ Constructor to initialize a Patient object

public Patient$($String cprNumber, String caseHistory, String nextAppointmentDate$)\{$

this.cprNumber $=$ cprNumber;

this.caseHistory $=$ caseHistory;

this.nextAppointmentDate $=$ nextAppointmentDate;

$\}$

$//$ Getter method to retrieve the CPR number

public String getCprNumber$()\{$

return cprNumber;

$\}$

$//$ Getter method to retrieve the case history

public String getCaseHistory$()\{$

return caseHistory;

$\}$

$//$ Getter method to retrieve the next appointment date

public String getNextAppointmentDate$()\{$

return nextAppointmentDate;

$\}$

$\}$

$//$ Main class to implement the Dentist System

public class DentistSystem $\{$

$//$ HashMap to store patient records with CPR number as key

private static HashMap patientRecords $=$ new HashMap;

$//$ Main method

public static void main$($String$[]$ args$)\{$

Scanner scanner $=$ new Scanner$($System$.$in$)$;

boolean isRunning $=$ true;

$//$ Main loop to display menu and handle user input

while $($isRunning$)\{$

System.out.println$("1.$ Enter Patient Record"$)$;

System.out.println$("2.$ View Patient Record"$)$;

System.out.println$("3.$ Exit"$)$;

System.out.print$("$Enter your choice: $")$;

int choice $=$ scanner.nextInt$()$;

switch $($choice$)\{$

case $1$:

enterPatientRecord$($scanner$)$;

break;

case $2$:

viewPatientRecord$($scanner$)$;

break;

case $3$:

isRunning $=$ false; $//$ Exit the loop and terminate the program

break;

default:

System.out.println$("$Invalid choice. Please enter again."$)$;

$\}$

$\}$

scanner.close$()$;

$\}$

$//$ Method to enter a new patient record

private static void enterPatientRecord$($Scanner scanner$)\{$

System.out.print$("$Enter patient's CPR number: $")$;

String cprNumber $=$ scanner.next$()$;

System.out.print$("$Enter patient's case history: $")$;

String caseHistory $=$ scanner.next$()$;

System.out.print$("$Enter patient's next appointment date: $")$;

String nextAppointmentDate $=$ scanner.next$()$;

$//$ Create a new Patient object and add it to the HashMap

Patient patient $=$ new Patient$($cprNumber$,$ caseHistory, nextAppointmentDate$)$;

patientRecords.put$($cprNumber$,$ patient$)$;

System.out.println$("$Patient record added successfully."$)$;

$\}$

$//$ Method to view an existing patient record

private static void viewPatientRecord$($Scanner scanner$)\{$

System.out.print$("$Enter patient's CPR number: $")$;

String cprNumber $=$ scanner.next$()$;

$//$ Check if the CPR number exists in the HashMap

if $($patientRecords$.$containsKey$($cprNumber$))\{$

$//$ If found, retrieve the patient record and display it

Patient patient $=$ patientRecords.get$($cprNumber$)$;

System.out.println$("$Patient$\text{'}$s Case History: $"+$ patient.getCaseHistory$())$;

System.out.println$("$Next Appointment Date: $"+$ patient.getNextAppointmentDate$())$;

$\}$ else $\{$

$//$ If not found, display a message

System.out.println$("$Patient record not found."$)$;

$\}$

$\}$

$\}$

this is my code for patient records, and i want to test it