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Decoding Complexity: Mastering UML with Expert Guidance

Welcome to the realm of UML, where abstract ideas meet concrete solutions, and the language of diagrams speaks volumes. At DatabaseHomeworkHelp.com, we understand the challenges that come with UML assignments, and our experts are here to guide you through even the toughest topics. In this blog, we'll explore a complex UML topic, provide master-level sample questions and answers, and demonstrate how our experts can provide the assistance you need. If you find yourself saying, "Help with UML homework," you've come to the right place.

Topic: "Dynamic Modeling with Sequence Diagrams in UML"

Dynamic modeling in UML, specifically through sequence diagrams, offers a powerful way to visualize the interactions and flow of messages between objects in a system. Let's delve into some master-level sample questions and answers to showcase the depth of this topic.

Sample Questions:

1. Design a sequence diagram for an online shopping system where a user adds items to the cart, proceeds to checkout, and completes the purchase. Highlight user interactions and system responses.

Answer:

uml

@startuml actor User participant Cart participant Checkout participant Payment User -> Cart: Add items to cart activate Cart Cart -> Checkout: Proceed to checkout activate Checkout Checkout -> Payment: Complete purchase activate Payment Payment --> Checkout: Confirmation deactivate Payment Checkout --> Cart: Confirmation deactivate Checkout Cart --> User: Order confirmation deactivate Cart @enduml

2. Implement a Java code snippet for a class involved in the sequence diagram above, demonstrating the handling of cart operations.

Answer:

java

public class ShoppingCart { private List<Item> items = new ArrayList<>(); public void addItem(Item item) { items.add(item); } public List<Item> getItems() { return items; } // Other relevant methods... }

3. Explain the use of asynchronous messages in a sequence diagram and provide an example scenario where they are beneficial.

Answer: Asynchronous messages in UML sequence diagrams represent interactions where the sender does not need to wait for a response. For example, in a messaging system, a user might send a message to another user without waiting for an immediate reply. This non-blocking communication allows for increased system responsiveness and efficiency.

How Our Experts Can Help:

At DatabaseHomeworkHelp.com, our expert team consists of seasoned professionals with extensive experience in UML and dynamic modeling. When you seek help with UML homework, you benefit from:

Expertise in UML: Our team is well-versed in UML concepts, ensuring accurate and comprehensive assistance.

Customized Solutions: We tailor our solutions to your specific requirements, ensuring that your UML assignments meet the highest standards.

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Dynamic modeling with sequence diagrams is undoubtedly a challenging aspect of UML, but with the right guidance, it becomes a manageable task. At DatabaseHomeworkHelp.com, we pride ourselves on offering top-notch assistance for UML assignments. If you find yourself struggling with dynamic modeling or any other UML concept, simply say, "Help with UML homework," and let our experts guide you to success.

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UML DIAGRAM HOMEWORK HELP

Unified Modeling Language is a general-purpose, developmental, modeling language common language for business analysts, software architects and developers used to describe, specify, design, and document existing or new business processes, structure and behavior of artifacts of software systems. UML diagrams describe the boundary, structure, and the behavior of the system and the objects within it. Help with UML Diagram Homework provides assistance to students and professionals and all those who are in need to instant UML Diagram assistance. We are the leading online help provider in UML Diagram project help and the other related topics. We at AnswersPortals provide several types of online services like UML Diagram Assignment Help, UML Diagram Homework Help, UML Diagram Project and tutoring help, etc. Students can find the solution to all their queries related to UML here at very reasonable and affordable prices. We are available 24/7 to help students in need. We have a pool of dedicated tutors and experienced professionals on the subject who provide UML Diagram project help with highest quality solution. Students can avail the benefit of live chat facility or email us at answersportals@gmail.com for help with UML Diagram assignment we assure you to respond at the earliest.

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UML Diagrams Homework Help

Features Of UML Diagrams

UML plays a critical role to manage software and object-orientation. Few of the features of the UML diagrams include:

Develop different types of charts that are made with UML including activity diagrams, component diagrams, class diagrams and other types of diagrams that let you to learn about the software structurally and behaviorally.  There are different types of symbols used to draw UML; therefore it becomes very easy for users to understand what the diagram is depicting and the behavioral aspects of use cases.

Used to model application structure, behavior and business processes It offers the blueprint of the application. Visualize the system along with its working

Applications of UML Diagram

UML diagrams are used in different technical areas. Few of the users of this diagram include:

UML is used in enterprise information systems that offer benefits with designs and diagrams

Banking and financial services are using this diagram to develop their service procedures, which has increased the demand of UML in the market.

Telecommunication, retail stores and defense are using UML diagram.

Best Online UML Diagram Assignment Help

Many difficulties are faced by the students who are writing UML assignments. With the nature of UML subject being vast and many topics being problematic, students are ending up with submitting poor quality assignment that is taking a toll on their grades. Moreover, students’ research would end till textbook, which is not enough to complete the assignment. There should be a lot of practice to implement every process. In addition, students are finding hard to draw UML diagrams with simple to complicated topics. Our https://www.bestassignmentsupport.com experts will help students get their assignment done by meeting the requirements within the stipulated time.

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We Supply The Best UML Assignment To Help All Students

Unified Modeling Language is a normal language that specifies, visualizes, constructs and documents the artifacts of application methods within the discipline of software engineering. UML is the abbreviated form of the unified modeling language. It is a particularly major a part of the computer sciences and is taught in many software engineering. In line with the easiest definition of UML diagram, it is a basic cause developmental kind of modeling language which varieties the spine of the software engineering.

It's supposed for the intent of providing a general and a common means to imagine the design of a distinctive operating process. Many scholars pursuing program engineering in general study this discipline of laptop sciences and are quite often assigned with different forms of assignments, residence works and course works. Lots of the students at the present time fail to prioritize their work and as a result, are loaded with thousands of mission work and therefore, they require the support of some UML design online help to provide web sites. Because of this many of the students search the internet and appear for UML task aid on the web. A number of online aids offering organizations present UML assignment aid to the students but the exceptional amongst all are famous. It supplies with an incredibly high satisfactory of UML homework support which enables the students to score excessive grades in their assignments and house works.

 The list of some UML application:

The UML design diagrams find their software in a lot of program engineering tactics and likewise some other technical areas. One of the crucial very fashioned uses of UML diagrams are described below: -

 ·        UML has been used within the company understanding programs, really broadly today and has been known to improve it with its designs and diagrams

·        Banking and economic services have begun using UML design diagrams of their provider systems which has even led to an expansion in the demand of the UML available in the market.

·        Telecommunications, defense and the retail sectors at the moment are utilizing the UML designs in a lot of extents in these days.

·        The science and study subject has used one of the kind types of diagrams in UML and UML design processes for the intent of conducting distinctive experiments and researches.

·        UML additionally finds its functions in the net engineering and on the web portal at present and correctly, a variety of web services cannot operate without a distinct special UML design diagram.

Lots of the scholars don't even recognize the UML design approach and consequently, they search the internet with matters like ‘how to make a UML diagram’. One of the vital students wishes anybody to do their assignments and therefore, they look for UML undertaking help.

Author information:

Rebecca Virginia is a professional writer working at Assignment Helps UK; she is providing UML Assignment Help for students.

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Sequence UML Diagram Assignment Homework Help

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  The Assignment-2 Specification and Marking Criteria In this assignment, you are to implement a 3-tier enterprise application based on the following scenario. The application scenario An online device sale company needs to implement an e-business system. The system is a typical 3tier enterprise application that integrates a presentation tier, a business tier and a persistence tier. After user requirement and budget analysis, the executive of IT Department of the company has decided to use Java EE open source technology and related platforms and tools for the implementation of the system. As an officer of the IT Department of the company, you are delegated as the developer of the system core. To accomplish this task, you will need to design, implement, test and document the e-business system. The assignment specification 1. The persistence tier a. The company sells only 2 products, laptops and smart phones, and may extend to more products in the future through this general framework. A major assumption is that the 2 products share some common properties. For example, both laptops and smart phones have the properties of Brand, Model, Size of Display, Weight, OS, Camera and Wi-Fi etc. However, a laptop has speciality properties such as a Network Interface (e.g. 1000G Ethernet LAN), Hard Drive and Optical Drive etc.; a smart phone has speciality properties such as Cellular Connectivity (e.g. 4G 700/750/800/900/1800/2100), Location (e.g. GPS) and SIM Card (e.g. Nano or Micro). b. The product information must be persisted into a Derby database. You are required to use Java Persistence API (JPA) to persist the product information into a Derby database. In order to reduce code redundancy, you should use inheritance mapping. That is, in your design and implementation, the Java entity classes should be at least 3 with 1 class as the super class to abstract the common properties and operations for the 2 products and the other 2 classes as the sub-class for the specialty of each product. You are required to use the JoinedSubclass Strategy (detailed from page 170 of the textbook) in your design and implementation. c. The company needs to store customer details and customer orders. You are required to use entities to persist customer details and customer orders. The relationship between a customer and his/her orders must be one-to-many (detailed from page 156 of the textbook), i.e. a customer can have multiple orders, and each order is just for one product item only. 2. The business tier Develop the business tier by using Enterprise Java Beans (EJB). The business tier will process the data persistence or retrieval requests from users and interact with the persistence tier for accomplishing the requests. Note: to interact with the persistence tier, the EJBs need to use Java Persistence Query Language (JPQL) to query entities and return the processed results to the presentation tier. 3. The presentation tier Develop the presentation tier by using JavaServer Faces (JSF). The presentation tier will provide a web-based user interface, which will allow users to enter product details, customer details and order details and retrieve these saved information later on. Presenting exception messages, e.g. a user doesn’t enter data for a required text field, is necessary and required for this tier. Note: you need to review Backing Beans (Managed Beans) as the core component of presentation tier and its functions for JSF pages’ navigation (detailed from page 354 of the textbook) and do some personal research if necessary. To demonstrate success, you are required to implement all the required entities, EJBs and JSF pages (.xhtml files) and managed beans. To submit your assignment, you need to provide: Part 1: Documentation The diagram of architecture: it should include major components from all 3 tiers, which are depicted by using any formal method e.g. UML. The typical workflow: you need to use an example workflow, e.g. creating a customer’s order, to describe the tier components interaction and JSF pages navigation. The end user manual and test instruction: you are required to provide detailed instructions about how a user would compile and deploy the software and use the software to persist at least 2 products, 2 customers, where each customer puts in at least 2 orders. Part 2: Software You will have 2 options to provide the complete implementation code of the 3 tiers, including Java source code and executable files, persistence files and JavaServer Faces xhtml pages. You can provide your implementation by either a Maven project or a NetBeans project, which must satisfy: 1. The project can be compiled directly without any further revision/re-development or debugging. 2. The generated .war application from the project can be executed on a separate/independent GlassFish server (not the NetBeans embedded one) to interact with a separate/independent Derby database (not the NetBeans embedded one). Submission Your design and test documents must be detailed in a Word document. You must submit all the required files in a zip file. You must submit your assignment via the unit web site. Any hardcopy or email submission will not be accepted. After the marked assignments are returned, any late submissions will not be accepted. Demonstration of the e-business system To help you understand and develop the application, a number of screenshots have been provided to demonstrate the e-business system’s functionality of a reference implementation. You will need to use this demonstration as a guide to ensure that your development complies with the assignment specification and its function is complete. The demonstration can be accessed on the unit web site. Important Note: the demonstration is a system to sell Books and CDs, but the assignment that you need to implement is to sell Laptops and Smart Phones. However the application architecture is the same, that is, you can imagine that Book and Laptop play the same role, and CD and Smart Phone paly the same role. You cannot use Books and CDs as product for your implementation because they are the example entities of the textbook and too much reuse of the example code cannot show your understanding of JPA, EJB or JSF architecture and their usage. Doing so will result in 20% (-8 marks) penalty. The marking criteria of this assignment are detailed in the following table. Marking Criteria Available Marks Design Documentation 8 1. Diagram of Architecture 4 2. Description of tier component interaction and page navigation 4 Test Instruction 10 1. User’s manual for compiling and deploying the project 2 2. Inputs and expected outputs of each test 6 3. Coverage of the application scenario 2 Software 22 1. Being compilable and runnable 2 2. Conformance between the implementation of entities, EJBs, JSF pages and the given assignment specification 4 3. Functionality of data persistence 6 4. Functionality of data retrieval 6 5. Functionality of presentation (including necessary exception messaging) 2 6. Source code in-line comments and class readability 2 Subtotal for Assignment-2 40 Penalty of reusing Book and CD entities -8 (20%) Late Penalty -2 (5% ) for each calendar day (either full or part) Plagiarism Penalty Total for Assignment-2

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UML Assignment Help | UML Online Help | UML Project Help

The Unified Modeling Language (UML) is a general-purpose, developmental, modeling language used by software developers. UML is used to develop application structure, behavior, and architecture, business process, data structure diagrams, modeling a system independent of platform language, visualizing, specifying, constructing, and documenting information.  UML gives a standard way to write a system model, covering conceptual ideas. .  UML plays significant role in the field of software engineering that is intended to provide a standard way to visualize the design of a system.  In 1997 UML was created by the Object Management Group (OMG), and has been managed by this organization ever since.

We at Programminghomeworktutors provide help with both   categories of UML. The first one includes six diagram types representing  structural information which are used in documenting the architecture of  software systems and they are Component Diagram, Deployment Diagram, Class  Diagram, Composite Structure Diagram, Object Diagram, and Package Diagram.

The second includes the remaining seven representing general types of  behavior diagrams which represent functionality of software system. The  different behavior diagrams are:  Activity  Diagram, Use Case Diagram, UML State Machine Diagram, Communication Diagram,  Timing Diagrams, Interaction Overview Diagram, and Sequence Diagram.

A wide variety of UML modeling tools are available to simplify the  modeling process, including:        

ArgoUML

BOUML

IBM Rational Rose

MagicDraw UML

PowerDesigner and Dia.

Rational Rhapsody

StarUML

Umbrello

Following is the list of related topics in UML in which our Experts provide help with:        

Advanced class modeling-  aggregation

Application Interaction  model

Domain Analysis-Domain  class model

Implementation and  component modelling symbols

Mapping the business  model to the implementation

Object-oriented analysis  and design using UML

Real-time notation:  ports and connectors

Sequence and  collaboration diagram symbols

UML  Standard Diagrams

UML and design patterns

UML Architecture

UML Sequence Diagram

Use Case Slice Diagram

Visual Paradigm For UML

If you need any help/assistance in UML Assignment  Help, Homework Help, and Online Tutoring Help please email your assignment to programminghomeworktutors@gmail.com.  Our experts/tutors are highly qualified and well  experienced. They have been helping the students from past many years in UML  programming. Our experts will help you in solving UML assignment in best  possible way and we can assure you to deliver highest quality solution well  within the given deadline.

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CIS 247C Entire Course

CIS 247C Entire Course

CIS 247C Entire Course Object-Oriented Programming with Lab DeVry No Final Exam CIS 247C iLab Week 1-7 DeVry

CIS 247C iLab Week 1 DeVry

iLAB OVERVIEW Scenario and Summary This program creates the basic user interface code that can be used in the following week’s iLab assignments. The assignment will help you get started using the programming environment and some practice with coding. You will also be able to reuse much, if not all, of the code in later assignments. In this program, you will create the following methods: 1. DisplayApplicationInformation, which will provide the program user some basic information about the program. 2. DisplayDivider, which will provide a meaningful output separator between different sections of the program output. 3. GetInput, which is a generalized function that will prompt the user for a specific type of information, then return the string representation of the user input. 4. TerminateApplication, which provides a program termination message and then terminates the application. Using these methods, you will construct a program that prompts the user for the following: 1. your name, which will be a string data type; 2. your age, which will be an integer data type; 3. the gas mileage for your car, which will be a double data type; and 4. a display of the collected information. CIS 247C iLab Week 2 DeVry

iLAB OVERVIEW Scenario and Summary We begin our investigation of object-oriented programming by creating an object-oriented program with a class called Employee. You will create two objects based on the Employee class, along with a class that contains the main method. The attributes, constructors, and methods for this class must satisfy the requirements in Steps 1 through 3. After you create the objects, you will prompt the user for information and then display it. We will want to ensure that this first class is well-constructed and tested since we will extend this class in Labs 3 through 6. CIS 247C iLab Week 3 DeVry

iLAB OVERVIEW Scenario and Summary The objective of the lab is to take the UML Class diagram and enhance last week’s Employee class by making the following changes: 1. Create a static variable called numEmployees that holds an int and initialize it to zero. This will allow us to count all the Employee objects created in the main class. 2. Increment numEmployees in all of the constructors 3. Add overloaded versions of setDependents and setAnnualSalary that accept strings. This way, we will have two “set” methods for both dependents and annual salary; one that accepts a string, and one that accepts its default data type. CIS 247C iLab Week 4 DeVry

iLAB OVERVIEW Scenario and Summary The objective of the lab is to modify the Employee class to demonstrate composition and a class interface. An employee typically has benefits, so we will make the following changes: 1. Create a Benefits class. 2. Integrate the Benefit class into the Employee class. 3. Create an iEmployee abstract class to guarantee that calculatePay is implemented in the Employee class. A tutorial on interfaces can be downloaded here. CIS 247C iLab Week 5 DeVry

iLAB OVERVIEW Scenario and Summary The objective of the lab is to take the UML Class diagram and enhance last week’s Employee class by making the following changes: 1. Create a class called Salaried that is derived from Employee. 2. Create a class called Hourly that is also derived from Employee. 3. Override the base class calculatePay() method. 4. Override the displayEmployee() method. CIS 247C iLab Week 6 DeVry

iLAB OVERVIEW Scenario and Summary We have two separate goals this week: 1. We are going to create an abstract Employee class and two pure virtual functions – calculatePay() and displayEmployee(). The abstract Employee class will prevent a programmer from creating an object based on Employee, however, a pointer can still be created. Objects based on Salaried and Hourly will be allowed. The pure virtual function calculatePay() in Employee will force the child classes to implement calculatePay(). The other pure virtual function displayEmployee() in Employee will force the child classes to implement displayEmployee(). 2. We are going to implement Polymorphism and dynamic binding in this iLab. CIS 247C iLab Week 7 DeVry

iLAB OVERVIEW Scenario and Summary This week, we learn how to manage complexity by putting together a ready-built application that comprises a number of separate header and source files. Our job here will be to take these individual files and combine them into one standalone application. Although the process is quite a simple one, it will emphasize the advantage of modularity when writing code. It also shows how code can be reused between programmers and/or applications. CIS 247C Quiz Week 1-6 DeVry

CIS 247C Quiz Week 1 DeVry

(TCO 1) Which of the following would be a more appropriate choice for a method in a Fork class? Color() Bend() Eat() Material() (TCO 1) By default, a class does not have the property of _____. Encapsulating data Information hiding Containing both data members and member methods Knowing how other classes are implemented (TCO 1) Which of the following statements is/are true? 1. A class is necessary to be defined before you can create an object. 2. The specific values of the attributes of an object represent the state of the object. 3. An interface of a class defines what messages an object can respond to. 4. Objects communicate through message passing. All are true Only A, B, and D are true None are true (TCO 1) _____ is the process of identifying important attributes and behaviors of an object. Class Abstraction Coding All of the above None of the above (TCO 1) Which of the following would be a more appropriate choice for a data member in a TextBox class? Resize Show Font Color Write (TCO 1) Examine the ClockType class definition. How many class members does it contain? class ClockType public: void setTime(int, int, int); int getTime(); void printTime(); void icrementSeconds(); private: int hr; int min; int sec; 7 3 10 4 An average of 5 because (7+3)/2=5 (TCO 8) Most professional coding standards use _____ for class and method names. Underscores along with all upper case words Method Class case No specific naming convention Pascal case (TCO 1) Inheritance is referred to as a(n) _____ relationship, while composition is referred to as a(n) _____ relationship. Superclass-subclass; friend Is-a; Has-a Has-a; Is-a None of the above (TCO 1) Assume we have two classes and have instantiated two objects from each class. How many copies of each class’s attributes and methods exist in the instantiated objects? Two copies, one copy of the first class and one of the second; objects always share attributes and methods Zero, the objects do not have attributes and methods Four copies, two copies of the first class and two of the second Eight copies (TCO 1) By default, all members of a class are _____. Public Private Protected Internal Unfriendly CIS 247C Quiz Week 2 DeVry

(TCO 2) Getters and setters are sometimes called _____ methods and _____ methods, respectively. mutator; accessor accessor; mutator retrieval; putter None of the above (TCO 2) Only those class members that are presented to the users of the class are part of the ______ of the class. Interface Implementation Constructors Superclass (TCO 2) A Waiter is responsible for taking the order from the Customer, informing the Chef of the order and delivering the requested food back to the Customer. A Chef is responsible for preparing the food and notifying the Waiter when the food is ready. The Customer is responsible for placing an order from the menu. In identifying the interface of the Chef object, which of the following would you consider as (an) appropriate message(s) the Chef should respond to? “Take a pound of ground meat, add a chopped onion, salt, pepper, parsley and broil for 15 minutes until the burger becomes golden brown.” “What do you do after work?” “Prepare a steak, medium-rare.” All of the above Only A and C (TCO 2) Which of the following statements is/are false? If a method is public, it is considered part of the class interface. One goal regarding the implementation of a class should be kept in mind: a change to the implementation should not require a change to the user’s code. If you declare an attribute as public, you do not have to worry about tracking down every piece of code that might have changed the attribute when debugging. All of the above None of the above (TCO 5) One of the purposes of a(n) _____ is to release resources back to the system when the object is not used anymore. Class Constructor Destructor Instance variable (TCO 5) Consider the following class definition. class Flower private: string color; double cost; public: Flower() color = “red”; cost = 0.0; Flower(string c) color = c; cost = 0.0; void setColor(string c) color = c; void setCost(int amount) cost = amount; Which of the following is/are true? (i) The attribute cost can be set to a new value, by a user of this class (ii) You can write cout<<”The flower is: “ << Flower.setColor(); (iii) A default constructor is provided. I Ii Only I and iii None are true All are true (TCO 5) Which of the following method pairs depict method overloading? public void Roll() ; public int Roll(int x) public int Reverse(int x, int y) ; public int Reverse(int y, int x) public int Subtract(int x, int y) ; public int Subtract(int x, int y, int z) All of the above Only A and C (TCO 5) Which error handling technique is the least appropriate when developing an application? Check for potential problems and abort the application when a problem is encountered. Check for potential problems and throw an exception. Check for potential problems, catch the mistake, and try to fix it. Ignore the problem; all applications crash at some point. (TCO 2) Assume a class contains two non-static data members and one static data member. If two objects have been instantiated from the class, how many copies of the static data member exist? 3 6 2 1 (TCO 2) Can two methods each define a local variable with the same name? Yes, as long as the variable is used in the same way. No, this is not possible because the compiler would not know which variable to use. Yes, but only if the methods have the same name. None of the above CIS 247C Quiz Week 3 DeVry (TCO 2) Java, C#, and C++ all allow for the use of comments. Which of the following statements are true regarding comments? The compiler will ignore all comments if they are properly formatted. The compiler will ignore all comments if they are properly formatted. The output console will ignore all comments if they are properly formatted. All of the above None of the above (TCO 2) Which of the following statements is true? Object names are listed in the middle section of a UML diagram. Attribute names are listed in the middle section of a UML diagram. Method names are listed in the middle section of a UML diagram. Method names are listed in the middle section of a UML diagram. None of the above (TCO 2) A(n) _____ has the same name as the class it is declared in, it is used to initialize attributes and accepts zero arguments. Default destructor Default constructor Initializing method Instantiation None of the above (TCO 2) _____ attributes are hidden from outside classes, which is also known as information hiding. Static Private Public All of the above (TCO 2) Encapsulation _____ and provides _____ for program components. Protects an object’s data from unwanted modifications; independence Protects an object’s methods from unwanted modifications; independence Provides universal access to an object’s attributes; a stable implementation Provides universal access to an object’s methods; a stable implementation None of the above (TCO 2) Which of the following symbols indicate level of access for both attributes and methods in a class? && / – II All of the above (TCO 2) Object-oriented classes should be designed with the concept of a black box in mind. This means that users of the class should only need to know what _____ and _____ are associated with the class. The actual implementation details need not be known. interface; implementation inputs; outputs objects; accessors relationships; interfaces (TCO 2) Which of the following statements is false about encapsulation? Encapsulation assists in creating reliable code. Encapsulation assists in creating reliable code. Encapsulation assists in creating reliable code. None of the above (TCO 2) Which of the following is a proper implementation for a getter? public: int getAge() return age; public: void getAge() return age; public: void getAge() return age; public: void getAge() return age; (TCO 2) Identify the getter declaration(s) below that most likely adhere(s) to the concept of information/data hiding. private: string getName()return name; public: string getName()return name; private: void getName()return name; public: void getName()return name; None of the above CIS 247C Quiz Week 4 DeVry (TCO 3) A solid object-oriented design process includes which of the following? Doing good analysis Gathering user requirements Identifying the classes All of the above (TCO3) When would a programmer write more than one constructor? You never have more than one constructor The constructor cannot be overloaded The one object can be created by two different constructors When the object can be initialized in more than one way (TCO3) Which of the following might lead to potential class(es)? Checking account Customer Deposit A and B None of the above (TCO3) Why do classes need to collaborate with each other? Most classes do not exist in isolation. Classes need to interact with other classes to get something they want most of the time. This is where messages between classes apply. All of the above (TCO 3) Assume you have an Employee class with a non-static attribute named salary. If you create ten objects of this class, how many copies of the salary variable will you have? 2 10 An unlimited number None of the above (TCO3) What happens right after gathering requirements in the object-oriented design process? Developing SOW Identifying classes Identifying classes Identifying classes (TCO3) In the object-oriented design process, what is/are the reason(s) to identify requirements early and keep design changes to a minimum? The cost of a design change in the implementation phase is significantly higher. The cost of a design change after the deployment phase is astronomical when compared to the first item. The cost of a requirement/design change in the design phase is relatively small. All of the above (TCO3) In object-oriented design, which of the following is true about the gathering requirements phase? It represents what the user wants the system to do and is the most important part of the system. The level of detail needs to be very technical. The requirement document does not need to be very specific to represent the true nature. The gathering requirement happens after the developing user interface prototype. (TCO 3) Which of the following is true? An abstract data type: I. Captures a data representation; II. Defines the operations that are allowed on its data; III. Replaces structured programming I, II, and III I, II I, III II, III (TCO 3) Classes do not have the property of _____. Encapsulating data Information hiding Containing both data and functions Containing both data and functions CIS 247C Quiz Week 5 DeVry (TCO 3) Which of the following about composition is true? Composition promotes code reuse. Class composition means a class contains objects from another class. Inheritance and composition can be used together. All of the above (TCO 4) Which of the following is true about inheritance? Child classes are more generalized than their associated parent classes. Inheritance demonstrates the generalization/specialization relationship. Parent classes are more specialized than their associated child classes. Parent classes are more specialized than their associated child classes. (TCO 4) Select the parent class. Circle Shape Cylinder Rectangle (TCO 4) Which of the following is not a good example of a hierarchy that could be modeled by inheritance? Person Even numbers Bank account Reptile (TCO 4) Which of the following examples represent the “is-a” relationship in the parent/child format? Dog/cat Rectangle/circle Checking account/saving account None of the above (TCO 3) What is the result of over-using inheritance? System dependencies are created. Unnecessary relationships are created. Code is harder to understand. All of the above (TCO 3) In object-oriented programming, inheritance is transitive; that means a child class _____. Inherits only from its parent class Inherits only selected methods and fields Inherits all the methods and fields of all its ancestors Does not inherit any methods or fields (TCO 4) What inheritance mode is the most general one? Private Default Public Protected (TCO 4) Inheritance is only possible in _____ languages. Procedural Object-oriented GUI based Non-structured (TCO 6) _____ is the ability to combine data and operations on that data into a single unit. Inheritance Encapsulation Polymorphism Composition CIS 247C Quiz Week 6 DeVry (TCO 7) An abstract class can contain _____. Pure virtual functions Ordinary functions Both A and B None of the above (TCO 7) What is an abstract class? Any class which can be instantiated A class without any subclasses A class without any subclasses Any superclass with more than one subclass (TCO 7) Which of the following statements is false? A pure virtual function is a function without function implementation and can be found in an abstract class. If a derived class extends an abstract base class, the derived class must implement the pure virtual functions declared in the abstract base class. If a derived class extends an abstract base class, the derived class must implement the pure virtual functions declared in the abstract base class. Pure virtual functions are inherited. (TCO 7) Which of the following classes is most likely an abstract class? EvoCellPhone EvoCellPhone Building Rose (TCO 7) In terms of object-oriented programming, a contract is a mechanism that forces a programmer to adhere to a predefined application programming interface or _____. Method signature Class declaration Framework Object instantiation method None of the above (TCO 7) Which is the prototype for a pure virtual function in class Person called DisplayDescription which has no inputs and no returned value? Void virtual DisplayDescription () Virtual void DisplayDescription () = 0; Virtual void TVGame:: DisplayDescription() Virtual void TVGame:: DisplayDescription() (TCO 7) Some object-oriented languages such as C++ allow for _____, while other object-oriented languages such as Java and .NET do not. Abstract classes Multiple inheritance Class overloading Method instantiation (TCO 7) Which of the following classes represent an abstract class? Class Plant virtual void grow()=0; Class Plant virtual void grow (); Class Plant virtual void grow () Class Plant virtual void grow () (TCO 7) Which of the following declares a pure virtual function in an abstract C++ class? Public: virtual void method()=0; Public: void method() Public: void Method(); Public: void method()=0 (TCO 7) What is the coding requirement(s) that a programmer must follow when writing virtual functions? The programmer must use a “virtual” keyword in the parent class. The parent class must have specific implementation coded in the .cpp file. The base class must use a different name for the function than the parent class. There are no specific coding requirements for using the “virtual” keyword. CIS 247C Discussions Week 1-7 All Posts 156 Pages DeVry CIS 247C Object-Oriented Programming and Lab Forum Discussions Week 1 All Posts 26 Pages DeVry CIS 247C Object-Oriented Programming Discussions 1 Week 1 All Posts 17 Pages DeVry The Object-Oriented Paradigm supports abstractions through Classes. Classes are software-programming abstractions; they encapsulate a set of related attributes (data members) and behaviors (methods) while at the same time they hide essential details from their users. Let’s look at a specific problem domain, which contains Appliances. Please try to pick a specific appliance and list its typical attributes and behaviors. As a next step, code a class for the appliance you choose. Can you provide a simple example that can be utilized to represent a class in C++? What are the general constructs that are needed to create a class in C++?… CIS 247C Lab Forum Discussions 2 Week 1 All Posts 9 Pages DeVry This discussion concerns programming labs and techniques. Please post any programming questions or hints and tips that you have concerning this week’s programming lab. At a minimum, post at least three notes that highlight the key programming techniques and/or problems or lessons learned that you experienced with this week’s lab. What are some of the concepts that are required for the week 1 lab assignment? How will you be able to represent appropriate classes and attributes for this week’s assignment?… CIS 247C Object Construction and Lab Forum Discussions Week 2 All Posts 29 Pages DeVry CIS 247C Object Construction Discussions 1 Week 2 All Posts 16 Pages DeVry What do we mean when we say “make sure an object is in a proper state when it is created” and how is this accomplished in object-oriented programming? Give examples to support your thoughts. Can you further discuss the concept that allows for two constructors to exist within a class? How is this important in representing objects in classes?… CIS 247C Lab Forum Discussions 2 Week 2 All Posts 13 Pages DeVry This discussion concerns programming labs and techniques. Please post any programming questions or hints and tips that you have concerning this week’s programming lab. At a minimum, post at least three notes that highlight the key programming techniques and/or problems or lessons learned that you experienced with this week’s lab. Can you further discuss tips for identifying appropriate calculations and variables that may be needed? How might method overloading apply to this week’s lab assignment?… CIS 247C Encapsulation and Lab Forum Discussions Week 3 All Posts 25 Pages DeVry CIS 247C Encapsulation Discussions 1 Week 3 All Posts 13 Pages DeVry Define encapsulation in terms of object-oriented programming and discuss how it relates to data/information hiding. What mechanisms can be used to ensure that data encapsulation is successfully implemented in an application? How are classes able to access certain attributes in an outside class?… CIS 247C Lab Forum Discussions 2 Week 3 All Posts 12 Pages DeVry This discussion thread is used to discuss the programming labs, techniques, and any questions that you may have. Post any programming questions or “hints and tips” you have on this week’s programming lab. At a minimum, post at least three notes that highlight the key programming techniques, problems you had with this week’s lab, or help for other students. How is an application supposed to access the private variables of the Person class?… CIS 247C Identifying Classes and Lab Forum Discussions Week 4 All Posts 16 Pages DeVry CIS 247C Identifying Classes Discussions 1 Week 4 All Posts 7 Pages DeVry After we perform the analysis and collect the user requirements, the process of identifying classes begins. How do we identify classes? How do we decide the responsibilities of each class? Shall a class take more than one responsibility? What do you think are some important points to consider when determining responsibilities for classes with in an application?… CIS 247C Lab Forum Discussions 2 Week 4 All Posts 9 Pages DeVry This discussion thread is used to discuss the programming labs and techniques. Please post any programming questions or “hints and tips” that you have concerning this week’s programming lab. At a minimum, post at least three notes that highlight the key programming techniques and/or problems you had with this week’s lab. This section lists options that can be used to view responses. One of the principle features of components in OOP is the has-a concept. Can you further provide an example that clarifies and exemplifies the has-a concept in object-oriented programming?… CIS 247C Inheritance and Lab Forum Discussions Week 5 All Posts 25 Pages DeVry CIS 247C Inheritance Discussions 1 Week 5 All Posts 13 Pages DeVry Often, commonalities exist among classes. Objects might have similar but still somewhat different sets of attributes and operations. What mechanisms can we use to represent different degrees of similarity among entities in C++? Which class is the parent class and which class is the child class? How is inheritance achieved and appropriate method overriding?… CIS 247C Lab Forum Discussions 2 Week 5 All Posts 12 Pages DeVry This discussion thread is used to discuss the programming labs and techniques. Please post any programming questions or “hints and tips” that you have concerning this week’s programming lab. At a minimum, post at least three notes that highlight the key programming techniques and/or problems you had with this week’s lab. What are some of the key concepts related to this week’s learning outcomes that are demonstrated in the week 5 lab assignment?…. CIS 247C Interfaces and Abstract Classes and Lab Forum Discussions Week 6 All Posts 21 Pages DeVry CIS 247C Interfaces and Abstract Classes Discussions 1 Week 6 All Posts 11 Pages DeVry Discuss how interfaces and abstract classes can be used to create subclasses that contain similar attributes and behaviors. Utilize this discussion to address the topic of interfaces and abstract classes that we have previously touched upon. Specifically, how can we utilize interfaces and abstract classes in C++ in order to create subclasses?… CIS 247C Lab Forum Discussions 2 Week 6 All Posts 10 Pages DeVry This discussion thread is used to discuss the programming labs, techniques, and any questions that you may have. Post any programming questions or “hints and tips” you have on this week’s programming lab. At a minimum, post at least three notes that highlight the key programming techniques, problems you had with this week’s lab, or help for other students. Please utilize this forum to address how the concepts of interfaces and abstract classes will apply to the week 6 lab assignment…. CIS 247C Self-Documenting Code and Lab Forum Discussions Week 7 All Posts 14 Pages DeVry CIS 247C Self-Documenting Code Discussions 1 Week 7 All Posts 8 Pages DeVry What are your opinions on the assertion in the lecture that programming style has more to do with program readability than comments? What IS good programming style? What is bad programming style? For example, how does proper naming of variables help to improve program readability. Can you provide a good example of a strong variable naming convention versus a weak one?… CIS 247C Lab Forum Discussions 2 Week 7 All Posts 7 Pages DeVry This discussion thread is used to discuss the programming labs and techniques. Please post any programming questions or “hints and tips” that you have concerning this week’s programming lab. Post at least three notes that highlight the key programming techniques and/or problems you had with this week’s lab. What are some tips for ensuring that a program is broken down into appropriate components?…

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