Account State Management

This assignment involves creating a class diagram and a sequence diagram for an Account system. The class diagram defines the classes 'Class Diagram' and 'AccountData', with methods such as create, open, pin, deposit, withdraw, balance, logout, suspend, activate, close. The sequence diagram illustrates the operation sequence: OPEN(123,111,1000), LOGIN(111), PIN(123), DEPOSIT(200), BALANCE(), SUSPEND(), CLOSE.

Class Diagram

Class Account:
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
}
Open(int p, int y, int a){
If(currState == 1) then
AccountData ad = new AccountData(p,y,a,”active”);
End if
}
Pin(int pin){
IF( currState = 1 && pin == ad.getPint())
Set S = LS[2];
END IF
}
Deposit(int d){
IF(currState = 2 )
Ad.deposit(d);

End IF
}
Withdraw(int y){
IF(currState = 2 )
Ad.withdraw(y);
End IF
}
Balance(){
IF(currState = 2 )
Return ad.balance();
}
Logout(){
IF(currState = 2 )
S = LS[1];
End IF
}
Suspend(){
IF(currState = 2 )
Ad.setAccountStatus(“suspend”);
End IF

}
activated(){
IF(currState = 2 )
Ad.setAccountStatus(“activated”);
End IF
}
Close(){
IF(currState = 2 )
S = LS[1];
End IF
}
Class AccountData:
setPin(int pincode){
pin = pincode;
}
Deposit(int d){
Balance = balance + d;
}
withdraw(int w){

Balance = balance - w;
}
Balance(){
Return balance;
}
setAccountStatus(String status){
accountStatus = status;
}
Sequence Diagram
Provide a sequence diagram for the following operation sequence:
OPEN(123,111,1000), LOGIN(111), PIN(123), DEPOSIT(200), BALANCE(),
suspend(), close.