Develop a sequence diagram for the process of booking a seat on an airplane flight with the below minimum requirements. 4.1 Create instances (objects) for the classes Userinterface, Airline, Flight, Traveller 4.2 Create a minimum of 6 messages and represent the message calls between all the objects 4.3 Make sure the object lifelines and the activations are well represented and clear Note: Assume that there are no complex interactions that need to be displayed

Develop a sequence diagram for the process of booking a seat on an airplane flight with the below minimum requirements. 4.1 Create instances (objects) for the classes Userinterface, Airline, Flight, Traveller 4.2 Create a minimum of 6 messages and represent the message calls between all the objects 4.3 Make sure the object lifelines and the activations are well represented and clear Note: Assume that there are no complex interactions that need to be displayed

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter11: Advanced Inheritance Concepts

Section: Chapter Questions

Problem 4PE

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Develop a sequence diagram for the process of booking a seat on an airplane flight with the below minimum requirements. 4.1 Create instances (objects) for the classes UserInterface, Airline, Flight, Traveller4.2 Create a minimum of 6 messages and represent the message calls between all the objects.4.3 Make sure the object lifelines and the activations are well represented and clear.Note: Assume that there are no complex interactions that need to be displayed. NOTE: please provide and fill the answers from 4.1 to 3.3 seprately as shown in pictures.
Which of the following statements are TRUE about the elements within subsystems and their visibilities? I. None of the elements within a subsystem should have public visibility. II. Only the elements that call external classes should have public visibility. III. Only the elements that construct subsystem interface should have public visibility. IV. It is a good practice to use a façade class with elements that have public visibility. A Only I B All of them C None of them D II, III, and IV E III and IV
Create a project Vehicles in bluej. The project has Cars, Buses ,Trucks and Bikesclasses ,all these classes inherit from an interface Vehicle. Pedal_bikesand Motor_bikesare subclasses of abstract class Bikes. A.Show the relationship(class diagrams)between above mentioned classesand interfacesand write the necessary class definitions. B.Interface should have 3 methods: drive(), start() and stop(). C.abstract class Bikesshould have 2abstract methods: speed( ) and getModel( ). D.Which one of the following assignments are legal, why or why not? Justify. Pedal_bikes bik= new Motor_bikes( ); Vehiclev1 = new Buses (); Bikesbi= new Bikes( ) please use BlueJ program.
This is the question - Create an abstract NewspaperSubscription class with fields for the subscriber name, address, and rate. Include get and set methods for the name field and get methods for the address and subscription rate; the setAddress() method is abstract. Create two subclasses named PhysicalNewspaperSubscription and OnlineNewspaperSubscription. The parameter for the setAddress() method of the PhysicalNewspaperSubscription class must contain at least one digit; otherwise, an error message is displayed and the subscription rate is set to 0. If the address is valid, the subscription rate is assigned $15. The parameter for the setAddress() method of the OnlineNewspaperSubscription class must contain an at sign (@) or an error message is displayed. If the address is valid, the subscription rate is assigned $9. Code I was given - public class DemoSubscriptions { public static void main(String args[]) { PhysicalNewspaperSubscription pnsGood = new…
For this project, you will implement an email client-server simulator using the object-oriented design diagramed below. The class diagram above shows class attributes (members) and methods (operations). Operations are denoted with a plus. The diamonds indicate an aggregation relationship between the connected classes. For example, a mailbox list can have one or many mailboxes. A Mailbox can have one or many messages. You will therefore need data structures container objects (lists) to contain these types of objects, as we have seen in previous exercises. All class attributes are private unless denoted otherwise and therefore must be accessed with constructors. getters, ord setters. Constructors are a preferred way to set class attributes. Constructors, setters, getters, and toString methods can be generated by IntelliJ. Check the IntelliJ documentation for how to use the Generate feature. Messages are simultaneously sent and received. Therefore, a Message is…
Question: An object of class ReportEmergencyForm is created when object of ReportEmergencyControl sends the «create» message and is destroyed once the EmergencyReportForm has been submitted. In general, the second column of a sequence diagram represents the boundary object with which the actor interacts to initiate the use case (e.g., ReportEmergencyButton). The third column is a control object that manages the rest of the use case (e.g., ReportEmergency– Control). From then on, the control object creates other boundary objects and may interact with other control objects as well (e.g., ManageEmergencyControl). ? Create Collaboration diagram for the above described scenario
please do task 2 only. TASK 1 Draw the UML class diagrams for the following classes: An abstract Java class called Person that has the following attributes: a String called idNumber a Date called dateOfBirth representing the date of birth. a String for name A class called RideRecord with the following attributes: a Driver attribute an enum called type of RideType a Date called date a double called fee A class called Passenger that extends the Person class and has the following attributes and behaviours: an ArrayList that contains RideRecord objects called rideHistory a public method called takeRide that takes a RideRecord with the following signature:public void takeRide(RideRecord rideRecord); a public boolean method called hasRideHistory that returns whether or not the Passenger has taken a ride before. A Driver class that extends the Person class and has the following attributes and behaviors: a String called licenseCode a public method called giveRide that takes as a…
Which (if any) of the following conditions are necessary for using polymorphism? Select all correct answers. The classes involved are in the same hierarchy. None of the classes can be abstract. All of the subclasses involved override the same method. The object reference cannot be of an interface type. An object reference of the superclass is used to call any methods. A superclass object is referenced by a subclass reference. Which of the following (if any) are true of abstract methods? Select all correct answers. Abstract methods must have a method body. Abstract methods cannot be declared in a class that isn't abstract itself. Abstract methods cannot be private or static. Abstract methods can only be declared in an interface. Abstract methods cannot be called. Constructor methods can be abstract.
Which (if any) of the following conditions are necessary for using polymorphism? Select all correct answers. The classes involved are in the same hierarchy. None of the classes can be abstract. All of the subclasses involved override the same method. The object reference cannot be of an interface type. An object reference of the superclass is used to call any methods. A superclass object is referenced by a subclass reference. Which of the following (if any) are true of abstract methods? Select all correct answers. Abstract methods must have a method body. Abstract methods cannot be declared in a class that isn't abstract itself. Abstract methods cannot be private or static. Abstract methods can only be declared in an interface. Abstract methods cannot be called.
Topic: Animals Document in a chart the layout and use enough comments for me to determine you created the project as intended. Create the parent class and 3 levels of subclasses Determine the instance variables needed for each Create the classes and their basic skeleton of getters, setters, toString, constructors etc. Create at least 2 abstract classes Create at least 1 interface.
5- Creates a class Student with 3 attributes: name, id and level. a. Add a constructor able to create a Student; b. Add the methods getId and getName; c. Add the method display able to display the attributes, 6- Creates a class Teacher with two attributes: name and specialty. a. Add a constructor able to create a Teacher; b. Add the methods getName and getSpeciality; c. Add the method display able to display the attributes 7- Creates a class TA extending the classes Student and Teacher with one more attribute: Supervisor of type Teacher; a. Add a constructor to create a TA; b. Add the method getSupervisor able to return the TA's Supervisor. c. Add a display method: display need to override (polymorphism) the previous display method of the basic classes; 8- Creates a class called CourseClass with 6 attributes: a. name: the course name; b. maxStud: a maximum number of Student into the CourseClass; c. nbStud: the current number of Student into the CourseClass. When a CourseClass is…
Create an abstract NewspaperSubscription class with fields for the subscriber name, address, and rate. Include get and set methods for the name field and get methods for the address and subscription rate; the setAddress() method is abstract. Create two subclasses named PhysicalNewspaperSubscription and OnlineNewspaperSubscription. The parameter for the setAddress() method of the PhysicalNewspaperSubscription class must contain at least one digit; otherwise, an error message is displayed and the subscription rate is set to 0. If the address is valid, the subscription rate is assigned $15. The parameter for the setAddress() method of the OnlineNewspaperSubscription class must contain an at sign (@) or an error message is displayed. If the address is valid, the subscription rate is assigned $9. Finally, write an application that declares several objects of both subscription subtypes and displays their data fields