MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Object Oriented Programming knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which specifier allows to secure the public members of base class in inherited classes? |
| A. | Private |
| B. | Protected |
| C. | Public |
| D. | Private and Protected |
| Answer» E. | |
| 2. |
In multi-level inheritance(all public), the public members of parent/superclass will ________ |
| A. | Will continue to get inherited subsequently |
| B. | Will not be inherited after one subclass inheritance |
| C. | , the public members of parent/superclass will ________a) Will continue to get inherited subsequentlyb) Will not be inherited after one subclass inheritancec) Will not be available to be called outside class |
| D. | Will not be able to allocated with any memory space |
| Answer» B. Will not be inherited after one subclass inheritance | |
| 3. |
If a class doesn’t have public members, then________ |
| A. | None of its members will be able to get inherited |
| B. | None of its instance creation will be allowed |
| C. | None of its member function can be called outside the class |
| D. | None of its data members will be able to get initial value |
| Answer» D. None of its data members will be able to get initial value | |
| 4. |
Which among the following is true for public class? |
| A. | There can be more than one public class in a single program |
| B. | Public class members can be used without using instance of class |
| C. | Public class is available only within the package |
| D. | Public classes can be accessed from any other class using instance |
| Answer» E. | |
| 5. |
Which specifier can be used to inherit protected members as protected in subclass but public as public in subclass? |
| A. | Private |
| B. | Default |
| C. | Public |
| D. | Protected |
| Answer» D. Protected | |
| 6. |
A class has its default constructor defined as public. Class B inherits class A privately. The class ___________ |
| A. | B will not be able to have instances |
| B. | Only A can have instances |
| C. | Only B can have instances |
| D. | Both classes can have instances |
| Answer» E. | |
| 7. |
Which among the following for public specifier is false? |
| A. | The static members can’t be public |
| B. | The public members are available in other packages too |
| C. | The subclasses can inherit the public members privately |
| D. | There can be only one public class in java program |
| Answer» B. The public members are available in other packages too | |
| 8. |
How many public class(s) (outermost) can be there in a java program? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | As required |
| Answer» B. 2 | |
| 9. |
If members of a super class are public, then________ |
| A. | All those will be available in subclasses |
| B. | None of those will be available in subclasses |
| C. | Only data members will be available in subclass |
| D. | Only member functions will be available in subclass |
| Answer» B. None of those will be available in subclasses | |
| 10. |
We can reduce the visibility of inherited methods. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which among the following can be used for outermost class access specifier in java? |
| A. | Private |
| B. | Public |
| C. | Default |
| D. | Default or Public |
| Answer» E. | |
| 12. |
Which among the following have least security according to the access permissions allowed? |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Public |
| Answer» E. | |
| 13. |
If the members have to be accessed from anywhere in the program and other packages also, which access specifier should be used? |
| A. | Public |
| B. | Private |
| C. | Protected |
| D. | Default |
| Answer» B. Private | |
| 14. |
Which among the following for public specifier is false?$ |
| A. | The static members can’t be public |
| B. | The public members are available in other packages too |
| C. | The subclasses can inherit the public members privately |
| D. | There can be only one public class in java program |
| Answer» D. There can be only one public class in java program | |
| 15. |
If a class doesn’t have public members, then________$ |
| A. | None of its members will be able to get inherited |
| B. | None of its instance creation will be allowed |
| C. | None of its member function can be called outside the class |
| D. | None of its data members will be able to get initial value |
| Answer» E. | |
| 16. |
Only object of class A can access disp() function |
| A. | Only object of class B can access disp() function |
| B. | Both instances can access disp() function |
| C. | Accessing disp() outside class is not possible |
| Answer» B. Both instances can access disp() function | |