Explore topic-wise MCQs in Object Oriented Programming.

This section includes 19 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 among the following is a serialization descriptor for any class?

A. StreamClass
B. ObjectStreamClass
C. ObjectStream
D. StreamObjectClass
Answer» C. ObjectStream
Discussion
2.

RandomAccessFile can be used to _______________________

A. Read from a random access file
B. Write to a random access file
C. Read and write to a random access file
D. Restricts read and write to a random access file
Answer» D. Restricts read and write to a random access file
Discussion
3.

Which exception handler can be used when character encoding is not supported?

A. UnsupportedException
B. UnsupportedEncodingException
C. SupportException
D. EncodingException
Answer» C. SupportException
Discussion
4.

StringReader handles _____________________

A. Any character stream
B. A character stream whose source is an array
C. A character stream whose source is character array
D. A character stream whose source is String only
Answer» E.
Discussion
5.

Which class can handle IO class interrupt?

A. ExceptionIO
B. InteruptedIO
C. InteruptedIOException
D. IOInteruptException
Answer» D. IOInteruptException
Discussion
6.

Reader class is _________________

A. Used to read from files
B. Abstract class to read character streams
C. Abstract class to input character streams
D. Used to take input from standard input stream
Answer» C. Abstract class to input character streams
Discussion
7.

Which class among the following makes incorrect assumptions?

A. LineNumberInputStream
B. LineNumberReader
C. LineReader
D. LineBuffer
Answer» B. LineNumberReader
Discussion
8.

What does FilePermission class do?

A. This class is used to give permission rights to a file
B. This class is used to restrict the use of permissions
C. This class is used to represent device access permissions
D. This class is used to represent file access permissions
Answer» E.
Discussion
9.

FileInputStream _________________________

A. Gets the input stream from any device file
B. Gets the input stream from any open socket
C. Gets the input stream from any cache
D. Gets the input stream from any open file only
Answer» E.
Discussion
10.

What is a FileDescriptor?

A. A handle for machine specific structure of an open file
B. A handle for program specific structure of an open file
C. A handle for compiler specific structure of an open file
D. A handle for representing device files structure
Answer» B. A handle for program specific structure of an open file
Discussion
11.

File class is ____________________________

A. An abstract of file representation only
B. An abstract of path names only
C. An abstract which can be used to represent path names or file
D. An abstract which can represent a file in any format
Answer» D. An abstract which can represent a file in any format
Discussion
12.

Which among the following class contains the methods to access character based console device?

A. Console
B. File
C. Device
D. Pipe
Answer» B. File
Discussion
13.

IO class provides input and output through ______________________

A. Data streams
B. Serialization
C. File system
D. Data streams, serialization and file system
Answer» E.
Discussion
14.

What is the use of IO class?

A. To handle all the input operations
B. To handle all the output operations
C. To handle all the input and output operations
D. To handle all the input and output to the standard input
Answer» D. To handle all the input and output to the standard input
Discussion
15.

WHICH_CLASS_CAN_HANDLE_IO_CLASS_INTERRUPT??$

A. ExceptionIO
B. InteruptedIO
C. InteruptedIOException
D. IOInteruptException
Answer» D. IOInteruptException
Discussion
16.

Which exception handler can be used when character encoding is not supported?$

A. UnsupportedException
B. UnsupportedEncodingException
C. SupportException
D. EncodingException
Answer» C. SupportException
Discussion
17.

StringReader handles _____________________$

A. Any character stream
B. A character stream whose source is an array
C. A character stream whose source is character array
D. A character stream whose source is String only
Answer» E.
Discussion
18.

PushBackReader allows the streams to be pushed back to the stream.

A. True
B. False
Answer» B. False
Discussion
19.

Reader class is ________________?

A. Used to read from files
B. Abstract class to read character streams
C. Abstract class to input character streams
D. Used to take input from standard input stream
Answer» C. Abstract class to input character streams
Discussion