O In inheritance means the ability to reuse data values of one object by objects of .another class
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- is only needed when one general type of object can be broken down into more specific types of objects, where each of the more specific types have some of their own unique attributes or behaviors. tion 12 yet wered ked out of Select one: Flag ostion O a Inheritance O b. Overriding Oc Overloading O d EncapsulationDesign and implement a class dayType that implements the day of the week in aprogram. The class dayType should store the day, such as Sun for Sunday. Theprogram should be able to perform the following operations on an object of typedayType:Implement a nested class composition relationship between any two class types from the following list: Advisor Вook Classroom Department Friend Grade School Student Teacher Tutor Write all necessary code for both classes to demonstrate a nested composition relationship including the following: a. one encapsulated data member for each class b. inline default constructor using constructor delegation for each class c. inline one-parameter constructor for each class d. inline accessors for all data members e. inline mutators for all data members
- write a phyton code: 1- define a class CommissionEmployee that:a. has a firstName, lastName, socialSecurityNumber, grossSales and commissionRateinstance variablesb. does initialize its properties to the values given at the time of instantiation withdefault valuesc. does provide a string representation when we call print on it2- define a class BaseCommissionEmployee, that is a CommissionEmployee anda. has a " baseSalary " property that tells us the base salary per weekb. does initialize its properties, inherited from CommissionEmployee class and definedin BaseCommissionEmployee, to the values given at the time of instantiation.c. has a method earnings that calculates and returns commission employee's pay(baseSalary + ( commissionRate * grossSales ))d. does provide a string representation when we call print on it3- define a class CommissionTester thata. has a method "main" to test the CommissionEmployee and BaseCommissionEmployeeclassesb. the main method must instantiate the class into…When the inheritance is private, the private methods/functions in base class are in the derived class. Select one: Oa. None of Above O b. Inaccessible O c Accessible O d. PublicWhat is the difference between equals() and == ? == looks to see if they are identical objects whereas equals() matches the content of the objects. equals() looks to see if they are identical objects whereas == matches the content of the objects. equals() and | == are used to match the content of objects, so no difference. equals() is used to match string objects whereas == is used to match all objects. O O O O
- In C++ Create a class person having 5 data members.• Name• Address• Cnic• Gender• AgeAll data members should be hidden by the use of the data hiding concept. These values will beinitialized using the child class constructor. For getting the values of these data members gettermethod will be created for all data members in the parent class i-e Person.2. Create another class Teacher that will inherit properties and functionalities from personclass. Teacher class will have experience data member and an array of subjects taught bythat particular teacher.3. Provide setter and getter methods for all data members.4. Teacher is allowed to teach at least 2 subjects.5. Perform input validation in the setSubject() function so the user will not be able to inputanything except string value.6. Default experience of the teacher will be 2 years.7. Parameterized constructor of person class will be called using the teacher classconstructor. This will initialize all the data members of the person class.8.…The mechanism of deriving a class from another derived class is known as? A. Polymorphism B. Single Inheritance C. Multilevel Inheritance D. Message Passing Justify your answer with explanationsPolymorphism in Java is Select one: a.when a program uses several different types of objects, each with its own variable. b.when a single variable is used with several different types of related objects in a program. c.when a single parent class has many child classes The following code fragment is polymorphic: for(Shape shape : shapes) if(shape instanceof Circle) { Circle c = (Circle) shape; // cast to a circle c.draw(g); // call the circle's draw method } else if(shape instanceof Rect) { Rect r = (Rect) shape; r.draw(g); } True or False The following code fragment is polymorphic: for(Shape shape : shapes) shape.draw(g) True or False
- Create any single that uses Object-oriented programming (concepts) which include: • Input validation. • Inheritance. • Constructors. • Encapsulation. • Polymorphism • Static variables and function. • Late binding.Implement the following concepts by constructing suitable classes in Java -a. Constructorsb. Constructor Overloadingc. Function Overloadingd. Function Overridinge. InheritanceCreate a class Person - Field - Name, Birthdate, Contact no and Mail idMethods - Constructor, accept and displayClass Employee - Inherits the Person classFields : Emp ID, grade, basic salary, Gross Salary, HRA (House Rent Allowance), TA (TravelingAllowance), DA (Dearness Allowance)Given:Grade Basic TAA 8000 2000B 7000 1500C 6000 1000D 5000 500Calculate Gross Salary :Gross Salary = Basic + HRA (20% of Basic) + DA (50% Basic) + TAe.g if Basic = 8000TA = 2000HRA = 20% of 8000 = 1600DA = 50 % of 8000 = 4000Gross = 8000 + 2000 + 1600 + 4000 = 15600Optional : you can implement increment function in which you can change grade of an employee andrecalculate salary with new gradeA new class safe member that would allow us to export a reference to a member Suggest a simple scheme for creating a new class SafeMember that would allow us to export a reference to a Member. The classes outside the system should be unaware of this additional class, and access the reference like a reference to a Member object. However, the reference would not allow the integrity of the data to be compromised. Remember that when designing the “Return Book with fines” use case, Member object is returned to the UserInterface to be able to display the member information such as owed fine. But this also means that the UserInterface can access all the Member methods. Your implementation of SafeMember class should prevent this.