Draw the sequence diagram of the following scenario. A client wishes to open a new account at a bank branch. To do so, his instance of class Client must first be retrieved from the central bank server. For a new client, an instance of Client must be created. An instance of BankAccount is then created using the Client object. A deposit must then immediately follow, to complete the account creation process.

1.A system offers four service classes A, B, C and D, which differ in price tag and have a distinctive public method doA(), doB(), doC(), and doD(), respectively. These classes do share an identical public feature doCommon() method. The price attribute is private and is declared only once somewhere to be shared by all service classes. To use the system, a selected service is first paid for and the corresponding object is created to run the distinctive method and then the doCommon() method. Show the UML class diagram for the system. Extra interfaces, classes or methods can be added if needed   2.Today, the distinctive methods are changed to a private visibility. This however limits a created object to call its own method. Redesign the system to solve the problem by calling a public method doJob() and utilizing polymorphism and dynamic binding to provide the distinctive service for a selected class. Extra interfaces, classes or methods can be added if needed. 3. Show only the program…

The class object is added to the class object. When a state change is recognized, the method in the interface is called. The ConcreteObserver the Observer interface.

Consider an online holiday booking system which has the Booking and User classes in the design. Which of the following associations describe a whole-part relationship of the two classes in the object-oriented design? Oa. Composition and aggregation O b. Inheritance and aggregation 0 с. Interface and aggregation O d. Composition and inheritance

Convert the following UML diagram into the Java code. Write constructor, mutator and accessor methods for the given class. Create an instance of Account class in a main method using a Demo class. Note: The structure of the class can be compiled and tested without having bodies for the methods. Just be sure to put in dummy return values for methods that have a return type other than void. Student Student Number Average Mark Is Eligible To Enroll Get Seminars Taken

In this example, a single interface, Game" is created, for two classes, SingleplayerGame and MultiplayerGame. This is on the surface a logical structure. However, in this case, the methods getServerList and pauseGame, published in the Game interface, are not used by both clients (As a MultiplayerGame cannot be paused, and a SingleplayerGame does not have servers).Because of this mismatch, the SingleplayerGame is forced to throw an UnsupportedOperationException when getServerList is called on it, and MultiplayerGame is forced to throw an UnsupportedOperationException when pauseGame is called on it. Which SOLID principle is violated here? . (SRP, OCP, LSP, ISP, or DIP) The Single Responsibility Principle (SRP)The Open-Closed Principle (OCP)The Liskov Substitution Principle (LSP)The Interface Segregation Principle (ISP)The Dependency Inversion Principle (DIP)

Consider an online holiday booking system. The initial design model contains the classes, Booking, Individual_Booking and Group_Booking via inheritance. Which of the following is used to describe the relationship of the three classes in the object-oriented design?   a. The has-a relationship b. The get-a relationship c. The set-a relationship d. The is-a relationship