Object Oriented Programming interview questions part 22
Object Oriented Programming interview questions part 22
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Total Questions: 20
1. The private members of the base class are visible in derived class but are not accessible directly.
Correct Answer is : TRUE
2. How can you make the private members inheritable?
Correct Answer is : It can be done both by making the visibility mode public or protected
3. What is the use of IO class?
Correct Answer is : To handle all the input and output operations
4. IO class provides input and output through ______________________
Correct Answer is : Data streams, serialization and file system
5. Which among the following class contains the methods to access character based console device?
Correct Answer is : Console
6. File class is ____________________________
Correct Answer is : An abstract which can be used to represent path names or file
7. What is a FileDescriptor?
Correct Answer is : A handle for machine specific structure of an open file
8. FileInputStream _________________________
Correct Answer is : Gets the input stream from any open file only
9. What does FilePermission class do?
Correct Answer is : This class is used to represent file access permissions
10. Which class among the following makes incorrect assumptions?
Correct Answer is : LineNumberInputStream
11. Reader class is _________________
Correct Answer is : Abstract class to read character streams
12. Which class can handle IO class interrupt?
Correct Answer is : InteruptedIOException
13. StringReader handles _____________________
Correct Answer is : A character stream whose source is String only
14. Which exception handler can be used when character encoding is not supported?
Correct Answer is : UnsupportedEncodingException
15. PushBackReader allows the streams to be pushed back to the stream.
Correct Answer is : TRUE
16. RandomAccessFile can be used to _______________________
Correct Answer is : Read and write to a random access file
17. Which among the following is a serialization descriptor for any class?
Correct Answer is : ObjectStreamClass
18. What are local classes?
Correct Answer is : Classes declared inside a function
19. All member functions of a local class must be ___________
Correct Answer is : Defined inside the class body
20. Can local class members access/use the general local variables (except static, abstract etc.) of the function in which it is defined?
Correct Answer is : No, it can’t access In anyway
