Read the below system description carefuly:

The below hospital system includes three classes:

$1-$ Patient: which includes basic information about patients.

$2-$ Doctor: which includes each doctor's information, and their assigned patients. Each doctor is assigne

to different patients, which are stored in the arrayList called patients.

$3-$ HospitalManagementSystem: for managing different aspects of doctors, Assumptions and considerations:

$1-$ You are not allowed to rip$-$off the papers.

$2-$ Your code should be written to execute on a computer. Write complete code and correct code,

errors will be counted. Add comments if needed.

$3-$ All setters and getters are already implemented.

$4-$ Assume all import statements are already provided.

$5-$ You may add extra methods or attributes to answer questions, however, use libraries or external code

at your own risk.

$6-$ You must implement correct exception handling for checked exceptions.

Q$1.(9$ points$).$ Implement the EVERYTHING in the UML Class diagram.

Q$2.(2$ point$).$ In the class SystemUser, create the method boolean validate$($String username$\_$temp, String

password$\_$temp$).$ This method should return true if the attributes userName and password in the class

SystemUser are EXACTLY the same as the ones passed as arguments of the method $($username$\_$temp and

password$\_$temp$).$ Otherwise, the method should return false.

Q$3.(8$ points$)$ In the the class HospitalManagementSystem, create the method called boolean save$(),$ whi

does the following:

I. Create an a local variable of type arrayList that is of type $DO,$ where DO is the inner class. C

the arrayList DOs.

II$.$ Fill the arrayList DOs with objects of type DO$,$ where each DO object corresponds to a doctc

to a patient stored in the arrayLists doctors and patients in the class HospitalManagementSys

The Dos should be as follows:

a$.$ The attribute name in a Patient or Doctor object should be set to the DO's name attribute.

b$.$ The DO ID attribute should be set according the object type:

i$.$ If object is of type Doctor, the attribute id in DO should be the doctorID attribute of the

object.

ii$.$ if the obje patients and appointment

Assume that the static arrayLists doctors and patients are already filled with all the doctors and patien

in the hospital.

$4-$ DO: which will be used as data$-$object for saving information about patients and doctors.

Below is the UML class diagram

Assumptions and considerations:

$1-$ You are not allowed to rip$-$off the papers.

$2-$ Your code should be written to execute on a computer. Write complete code and correct code,

errors will be counted. Add comments if needed.

$3-$ All setters and getters are already implemented.

$4-$ Assume all import statements are already provided.

$5-$ You may add extra methods or attributes to answer questions, however, use libraries or external code

at your own risk.

$6-$ You must implement correct exception handling for checked exceptions.

Q$1.(9$ points$).$ Implement the EVERYTHING in the UML Class diagram.

Q$2.(2$ point$).$ In the class SystemUser, create the method boolean validate$($String username$\_$temp, String

password$\_$temp$).$ This method should return true if the attributes userName and password in the class

SystemUser are EXACTLY the same as the ones passed as arguments of the method $($username$\_$temp and

password$\_$temp$).$ Otherwise, the method should return false.

Q$3.(8$ points$)$ In the the class HospitalManagementSystem, create the method called boolean save$(),$ whi

does the following:

I. Create an a local variable of type arrayList that is of type DO$,$ where DO is the inner class. C

the arrayList DOs.

II$.$ Fill the arrayList DOs with objects of type DO$,$ where each DO object corresponds to a doctc

to a patient stored in the arrayLists doctors and patients in the class HospitalManagementSys

The Dos should be as follows:

a$.$ The attribute name in a Patient or Doctor object should be set to the DO's name attribute.

b$.$ The DO ID attribute should be set according the object type:

i$.$ If object is of type Doctor, the attribute id in DO should be the doctorID attribute of the

object.

ii$.$ if the object is of type Patient, the attribute id in the DO should be patientID attribute o

object.

c$.$ The DO enum attribute "type" should be set based on the object's type $($to Doctor or to Patient$),$

object creation by calling the DO constructor. Add a comment with your name for an extra hal

III. Save all the DOs as objects to a file called SystemUsers.DB$.$

IV$.$ The method should finally return return true if all objects have been written successfully,

otherwise returns false.

Q$4.(8$ points$)$ In class SystemUser, create the static method called getID that returns the ID of an o

is passed as a parameter to the method, where the passed object can be an instance of the classes P$\_($c$)$

Doctor. For example if we call the code:

patient p$1=$new Patient$("$Salem$,$ "Doha$,22)$;

doctor d$1=$new Doctor$("$Rashid$","23419",20400\mathrm{.}0)$;

systemUser.getID$($p$1)$; $//$ method will return the id of p$1.$

systemUser.getID$($d$1)$; $//$ method will return $23419$