UML Diagrams for ATM System

This practical assignment focuses on designing an ATM system using Unified Modeling Language (UML) diagrams. The solution provided includes a class diagram illustrating the system's classes (System, RegisteredUserData, MachinePartData, Start, Idle, Ready) and their attributes and methods. A detailed description of each class operation is given, outlining the system's functionality, including user registration, login, price changes, and notifications. The solution also presents sequence diagrams demonstrating the user registration process to observe price changes and the system's notification process for price changes of specific machine parts. The assignment showcases the application of UML in visualizing and specifying the design of a software system.

Problme#1
Class diagram

Class operations brief description:
Class System:
S// point to current state
LS[0] // point to start state
LS[1] // point to idle state
LS[2] // point to ready state
Operations:
create(){
S->create()
currState = S.getID()
IF currState == 0 THEN
S = LS[1] //change ATM state from “Start” to “Idle”
ENDIF
}
Class: System
Login(String loginId, String password){
If(currentState == 0) then
If( rud.getLoginId.equals(loginId) && rud.getPassword(password)) then
S = LS[2];
Else
S = LS[1];
End if
End if

}

Register(String loginId, String password,String machinePartId){
If(currentState == 0) then
Rud.setLoginId(loginId);
Rud.setPasswrod(password);
Rud.setMachinePartId(machinePartId);
S = LS[1];
End if
}
UnRegister(String loginId){
If(currentState == 2) then
If(rud.getLoginId.equals(loginId)) then
Rud.removeuser();
S = LS[1];
End if
}
changePriceMachinePartId(String machinePartId, double newPrice){
If(currentState == 2) then
if( mpd.getMachinePartId == marhicnePartId) then
mpd.setPrice(newPrice);
end if
end if
}
viewMachinePrice(userLoginId){

If(currentState == 2) then
if (rud.getMachineId() && mpd.getMachinePartId()) then
print: mpd.getMachinePartPrice();
end if
end if
}
notifyRegisteredUsers(String machinePartId){
If(currentState == 2) then
loop: getRegisteredUser{
if(user.getMachinePartId == machinePartId) then
user.setNotification(true);
end if
end loop
end if
}
}
Class: RegisteredUserData
getLoginId(){

return loginid;
}
setLoginid(String loginIdd){
set logingId = loginidd;
}
setPassword(String pass){
set password = pass;
}
getPassword(){
return password ;
}
getMachinePartId(){
return machinePartId;
}
setMachinePartId(String mPartId){
set machinePartId = mPartId;
}
getanyNotification(){
return nayNotification;
}

setNotification(Boolean status){
set anyNotification = status;
}
Class: MachinePartData
getMachineName(){
return name;
}
setMachineName(String nm){
set name = nm;
}
getMachinePartId(){
return id;
}
setMachinePartId(String idd){
set id = idd;
}
getmachinePartPrice(){
return price;
}
setmachinePartPrice(double p){
set price = p;

}
Class: start
ID = 0;
Create(){
// no action defined
}
Class: “Idle”
Id = 1
Login(String loginId, String password){
Rud.setLoginId(loginId);
Rud.setPassword(password);
}
registerString loginId, String password,String machinePartId){
Rud.setLoginId(loginId);
Rud.setPassword(password);
Rud.setMachinePartId(machinePartId);
}

Class Ready:
changeMachienPartPrice(String machineId, double newprice){
loop: machinesPart : mpd
if(mpd.getMachinePartId == machineId) then
mpd.setMachinePartPrice(newprice);
end if
end loop;
}
viewMachinePrice(String loginId){
print: mpd.getMachinePartPrice();
}
notifyRegisteredUsers(String machinePartId){
loop: Registereduser -> rdu
if(rdu.getMachinePartId == machinePartid) then
print: mpd.getMachinePartPrice();
end if
end loop;
}
Exit(){
// exit from the system}

Sequence Diagram:
1. How the user registers to observe a price change of a selected machine
Part

2. How the system notifies users about price change of a specific machine
Part