Object Oriented Programming MCQs

Page No. 22

If a constructor is defined in protected access, then?


aIt’s instance can be created inside the subclasses


bIt’s instance can be created anywhere in the program


cIt’s instance can be created inside the subclasses and main() function


dIt’s instance can be created inside the parent class only



Which among the following best describes the protected specifier?


aMembers are most secure and can’t be used outside class


bMembers are secure but can be used outside the class


cMembers are secure as private, but can be inherited


dMembers are secure like private, but can’t be inherited



Which specifier allows to secure the public members of base class in inherited classes?


aPrivate


bProtected


cPublic


dPrivate and Protected


View Answer Private and Protected

In multi-level inheritance(all public), the public members of parent/superclass will ________


aWill continue to get inherited subsequently


bWill not be inherited after one subclass inheritance


cWill not be available to be called outside class


dWill not be able to allocated with any memory space



If a class doesn’t have public members, then________


aNone of its members will be able to get inherited


bNone of its instance creation will be allowed


cNone of its member function can be called outside the class


dNone of its data members will be able to get initial value



Which among the following is true for public class?


aThere can be more than one public class in a single program


bPublic class members can be used without using instance of class


cPublic class is available only within the package


dPublic classes can be accessed from any other class using instance



Which specifier can be used to inherit protected members as protected in subclass but public as public in subclass?


aPrivate


bDefault


cPublic


dProtected


View Answer Public

A class has its default constructor defined as public. Class B inherits class A privately. The class ___________


aB will not be able to have instances


b Only A can have instances


cOnly B can have instances


dBoth classes can have instances



Which among the following for public specifier is false?


aThe static members can’t be public


bThe subclasses can inherit the public members privately


cThere can be only one public class in java program


dThe static members can’t be public



What is the output of the following code?


aOutput is: object created


bOutput is: object createdobject created


cCompile time error


dRun time error


View Answer Compile time error

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