Given: abstract class A{ int a; int b; } class B extends A{ int a; } O cannot make class A abstract can create an instance of both class A and class B class B must also be abstract O cannot make an instance of class A Given: interface B { void methodA(); static void methodB(); void hiethodC(){ } } methodC should not have a body O methodB should have a body methodB should not be static O both a and c
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- Declaring a class virtual transforms it into an abstract class. T/Fclass A {protected int x1,y1,z; public: A(a, b,c):x1(a+2),y1(b-1),z(c+2) { for(i=0; i<5;i++) x1++; y1++;z++;}}; class B {protected: int x,y; public: B(a,b):x(a+1),y(b+2) { for(i=0; i<5;i++) x+=2; y+=1;}}; class D:public B, virtual public A { private: int a,b; public: D(k,m,n): a(k+n), B(k,m),b(n+2),A(k,m,n) { a=a+1;b=b+1;}}); int main() {D ob(4,2,5);} what the values of x1,y1 and zclass first { public: void setX(); void print() const; protected: int y; void setY(int a); private: int x; }; Suppose that class second is derived from class first using the statement: class second: private first Determine which members of class first are private, protected, and public in class second.
- class first { public: void setX(); void print() const; protected: int y; void setY(int a); private: int x; }; Suppose that class second is derived from class first using the statement: class second: private first which members of class first are private, protected, and public in class second?A class is made abstract by declaring that class virtual. T/FTrue or False, An abstract class must have at least one abstract method.
- Activity - Abstract Class An English teacher wants to find assessment mark of all the students in his course. Write a java program to find assessment mark of the students using following instructions. Save the project/file as StudentAbstract. A) Abstract Class name: Assessment Abstract Member Method: - to calculate and return total score totalScore() B) Class name: English extends Assessment Member variables: QuizMark, PracticeTest, ListeningMark Member Method : - Constructor to initialize member variables - to calculate and return total score totalScore QuizMark + PracticeTest*0.25 + %3D ListeningMark/2 C) Controlling class : StudentAbstract - To create an object of English class - To print totalScore of the EnglishDefine access private member of a class77255 Polymorphism - abstract class BankingAccount class. Create an application with an abstract class called Account with an abstract method calculateInterest, derive the following three classes from Account class 1. SBAccount 2. DAccount 3. FDAccount Implement the abstract method in these classes; Invoke these methods from the main method using the reference of BankingAccount class
- * For Cat and Animal class, correct way of inheritance is class Animal: public Cat O class Cat: public Animal Both are correct way None is correct wayTrue or False A statement that tries to use the new operator to instantiate an abstract class will not compile.QUESTION 16 What must be true of a class with one abstract method? O The class must also implement the Iterable interface Any derived class must implement the method The abstract method must have the static modifier O The method cannot specify a return value QUESTION 17 Suppose we wanted to design a set of classes for a veterinarian's office. Our Customer class looks like this: public class Customer { Pet [] pets; } Select all the statements that are true Once the size of the pets array has been set, it cannot be changed Because we're using an array, all pets must be the same A customer must have at least one pet We also need to declare a Pet class QUESTION 18 What is the proper use of an enumeration? To define a set of ordered values To enforce the use of the Comparable interface O To define, or enumerate, the values returned by a Random object generator O To define the classes in an inheritance hierarchy