When a class A is composing a reference to another class B, then we say that class A has-a class B relationship Select one: True False
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
When a class A is composing a reference to another class B, then we say that class A has-a class B relationship
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- In this assignment, you are implementing a class from a model shown here. PlayingCard suit char value int + PlayingCard (s:char, v:int): + getSuit(): char + getValue(): int + setSuit (s:char):void + setValue(v:int):void + toString(): String +isMatch (p:PlayingCard): boolean PlayingCard ADT 1) The constructor takes 2 char values and initializes the value and suit of the PlayingCard. 2) Accessor functions for the suit and value (getters) 3) Mutator functions for the suit and value (setters) 4) A toString method that displays the PlayingCard in the format (value, suit). For example, a 10 of hearts would display as (10,H). Face cards should display K, Q, J, or A, for the values 13, 12, 11, 14, respectively. 5) An isMatch method that takes a PlayingCard p as an argument and returns true if p's suit or value match that of the calling object After writing the class, test each function in a main method before proceeding to the next steps. Once your class is fully tested, write a driver method…A whole-part connection or composition occurs when a class contains objects of another class. The result is a has-a relationship. Consider the long statement: Outputsales.getHighestPaidEmployee(). getHireDate(). getYear().In a few words, explain what memberwise assignment entails.
- Select the class relationship that best describes the following scenario: • Class A accepts an instance of Class B as a parameter in one of its methods. • Class A then uses one of the Class B's methods. Association (Reflexive) Association (Bidirectional) Association (Directed A to B) Association (Directed B to A) Composition (A as the whole and B as the part) Composition (B as the whole and A as the part) Aggregation (A as the whole and B as the part) Aggregation (B as the whole and A as the part) Inheritance None of the givenA User class has an association link to a Service class, and calls its compute() method to do mathematical calculations. Because the computation takes time, it is better to first prompt a waiting message, which was not yet provided, to inform the user. However, the Service class is also used by other internal classes that do not need the message. Therefore, your job is to come out a way to provide the message without modifying the association relationship and the code of the Service class. What design pattern is a useful choice? Also,Show the new design in UML class diagram. Extra interfaces or classes can be added.True or False? A composition association relationship connects a Student class with a Schedule class, which means that if you remove the student, the schedule is also removed.
- 7. When a class contains objects of another class, the relationship is called a whole-part relationship or composition. The relationship created is also called a has-a relationship. Discuss some of the possible issues with composition, such as the long statement: Outputsales.getHighestPaidEmployee().getHireDate().getYear().In this exercise, you have to perform composition between the Toyota class and its Engine! Problem Statement# You have to create a Toyota class which inherits from a Car class, and is composed of an Engine Note: You already know that in such a composition relation, the oyota class will be res ible for Engine's lifetime. Consider this diagram for reference Car - id: int model: String - color: String + carFeatures(): void +setModel(): void + setColor(): void Toyota ToyotaEngine **** start): void stop): void . ..... + setStart(): void Part of- Car, Toyota and ToyotaEngine: Class Representation You should implement the Toyota class as the child class of the Car. It should have an instance of ToyotaEngine and a setStart() function which in turn calls the start () function of the ToyotaEngine class. The start () and stop () functions of ToyotaEngine class simply print out on screen that the engine has been started/stopped.A has-a relationship is implemented via inheritance.T/F
- Class members may be declared as... overloaded private or public attributes constructorsUsing the scenario of Object oriented programming Q1 Write a program that defines a class with a data member to holds a “serial number” for each object created from the class. That is, the first object created will be numbered 1, the second 2, and so on. To do this, you’ll need another data member that records a count of how many objects have been created so far. (This member should apply to the class as a whole; not to individual objects. What keyword specifies this?) Then, as each object is created, its constructor can examine this count member variable to determine the appropriate serial number for the new object. Add a member function that permits an object to report its own serial number. Then write a main() program that creates three objects and queries each about its serial number. They should respond I am object number 2, and so on.Define Point with attributes: x, y. Encapsulate Point (Declare the attributes as private and define the setters and getters) Define the constructors (default, with parameters). Override toString and equals