Master Java File Handling: Enhance Your Programming Skills

Question 1

In Java, the class that represents a file on the file system is:

Accepted Answer

File

Answer

FileIO

Answer

FileSystem

Answer

Buffer

Question 2

The 'try-with-resources' statement in Java:

Accepted Answer

Automatically closes resources after use

Answer

Catches exceptions related to file access

Answer

Improves code readability

Answer

Optimizes file access performance

Question 3

Which method is used to write data to a file in Java?

Accepted Answer

write()

Answer

print()

Answer

writeLine()

Answer

put()

Question 4

In Java, a 'FileReader' is used to:

Accepted Answer

Read characters from a file

Answer

Write characters to a file

Answer

Create a new file

Answer

Delete a file

Question 5

When attempting to access a non-existent file in Java, which exception is thrown?

Accepted Answer

FileNotFoundException

Answer

IOException

Answer

NoSuchFileException

Answer

FileAccessException

Question 6

The difference between 'BufferedWriter' and 'FileWriter' in Java is that:

Accepted Answer

BufferedWriter uses buffering for improved performance

Answer

FileWriter provides low-level file access

Answer

BufferedWriter can only write characters, while FileWriter can write strings

Answer

FileWriter is deprecated in modern Java versions

Question 7

The 'flush()' method in Java file handling is used to:

Accepted Answer

Force any buffered data to be written to the file

Answer

Close the file

Answer

Delete the file

Answer

Open the file for writing

Question 8

A 'Scanner' object is used when reading data from a file in Java to:

Accepted Answer

Parse and tokenize the input data

Answer

Buffer the input data for faster access

Answer

Write data to the file

Answer

Close the file

Question 9

To read characters from a text file efficiently, which Java class should be used?

Accepted Answer

BufferedReader

Answer

FileInputStream

Answer

FileReader

Answer

BufferedWriter

Question 10

Which method is NOT used for file seeking?

Accepted Answer

offset()

Answer

seek()

Answer

skip()

Answer

tell()

Question 11

Which exception is thrown when an attempt is made to read beyond the end of a file?

Accepted Answer

EOFException

Answer

IOException

Answer

FileNotFoundException

Answer

ArrayIndexOutOfBoundsException

Question 12

How can a file be opened in append mode?

Accepted Answer

Using the 'a' flag in the FileOutputStream constructor.

Answer

Using the 'w+' flag in the FileInputStream constructor.

Answer

Using the 'r+' flag in the FileOutputStream constructor.

Answer

Using the 'a+' flag in the FileReader constructor.

Question 13

Which Java class is used to represent the path of a file or directory?

Accepted Answer

Path

Answer

File

Answer

Directory

Answer

URI

Question 14

In Java, which class is primarily used for creating and writing to a file?

Accepted Answer

FileWriter

Answer

OutputStreamWriter

Answer

FileHandler

Answer

BufferedWriter

Question 15

To read bytes of data from a file using the FileInputStream class, which method should you employ?

Accepted Answer

read()

Answer

write()

Answer

open()

Answer

close()

Question 16

When attempting to access a nonexistent file, which exception is most likely to be thrown?

Accepted Answer

FileNotFoundException

Answer

IOException

Answer

InputMismatchException

Answer

ArrayIndexOutOfBoundsException

Question 17

What is the primary function of the BufferedWriter class?

Accepted Answer

Buffering data for performance optimization

Answer

Writing primitive data types to a file

Answer

Writing formatted data to a file

Answer

Compressing data before writing to a file

Question 18

Which method of the File class can be used to determine if a file is hidden?

Accepted Answer

isHidden()

Answer

exists()

Answer

canRead()

Answer

canWrite()

Question 19

What is the fundamental distinction between FileInputStream and FileOutputStream?

Accepted Answer

FileInputStream reads from a file, while FileOutputStream writes to a file

Answer

FileInputStream writes to a file, while FileOutputStream reads from a file

Answer

FileInputStream is for binary files, while FileOutputStream is for text files

Answer

FileOutputStream is for binary files, while FileInputStream is for text files

Question 20

Which Java interface represents a stream of characters?

Accepted Answer

Reader

Answer

InputStream

Answer

OutputStream

Answer

Writer

Question 21

In Java, which method should be used to properly close a file?

Accepted Answer

file.close()

Answer

file.shutdown()

Answer

file.terminate()

Answer

file.destroy()

Question 22

When attempting to access a non-existent file in Java, which exception is thrown?

Accepted Answer

FileNotFoundException

Answer

IOException

Answer

NoSuchFileException

Answer

FileDoesNotExistException

Question 23

In Java, which class is utilized for reading bytes from a file?

Accepted Answer

FileInputStream

Answer

FileReader

Answer

BufferedReader

Answer

BufferedWriter

Question 24

What is the primary purpose of implementing try-with-resources in Java file handling?

Accepted Answer

To automatically release allocated resources

Answer

To enhance code readability

Answer

To optimize code efficiency

Answer

To prevent exceptions during file operations

Question 25

Which method in Java is employed to write strings to a file?

Accepted Answer

println()

Answer

write()

Answer

append()

Answer

format()

Question 26

Identify the key difference between FileInputStream and FileOutputStream in Java.

Accepted Answer

FileInputStream reads bytes while FileOutputStream writes bytes

Answer

FileOutputStream reads bytes while FileInputStream writes bytes

Answer

FileInputStream is used for text files while FileOutputStream is used for binary files

Answer

FileOutputStream is used for text files while FileInputStream is used for binary files

Question 27

Explain the purpose of utilizing a buffer in Java file handling.

Accepted Answer

To enhance read/write performance

Answer

To reduce memory consumption

Answer

To safeguard against file corruption

Answer

To encrypt file content

Question 28

Which exception arises when attempting to read beyond the end of a file?

Accepted Answer

EOFException

Answer

FileNotFoundException

Answer

IOException

Answer

ArrayIndexOutOfBoundsException

Question 29

Define a DataInputStream in Java.

Accepted Answer

A stream designed to read primitive data types

Answer

A stream for reading strings

Answer

A stream for reading objects

Answer

A stream for reading binary data

Question 30

Which method in Java closes a file?

Accepted Answer

close()

Answer

flush()

Answer

dispose()

Answer

release()

Question 31

Describe the significance of the File class in Java.

Accepted Answer

Represents a file or directory in the file system

Answer

Provides methods to read and write files

Answer

Manages file permissions

Answer

Handles file compression

Question 32

To release system resources, which Java method should be used to close a stream?

Accepted Answer

close()

Answer

flush()

Answer

end()

Answer

terminate()

Question 33

In Java, which file access mode allows you to read and write data to a file?

Accepted Answer

rw

Answer

r

Answer

w

Answer

x

Question 34

When attempting to read from a file that does not exist, which Java exception is thrown?

Accepted Answer

FileNotFoundException

Answer

IOException

Answer

InputMismatchException

Answer

NumberFormatException

Question 35

To close a file stream in Java, which method is used?

Accepted Answer

file.close()

Answer

file.flush()

Answer

file.dispose()

Answer

file.end()

Question 36

Which Java class represents a sequence of characters read from a file?

Accepted Answer

BufferedReader

Answer

FileReader

Answer

InputStream

Answer

OutputStream

Question 37

In Java, which method is used to read a single line of text from a file?

Accepted Answer

file.readLine()

Answer

file.read()

Answer

file.readBytes()

Answer

file.readLines()

Question 38

When opening a file, what is the difference between the 'r' and 'w' access modes?

Accepted Answer

'r' opens the file for reading, while 'w' opens it for writing.

Answer

'r' opens the file for writing, while 'w' opens it for reading.

Answer

'r' opens the file for both reading and writing, while 'w' opens it exclusively for writing.

Answer

'r' opens the file exclusively for writing, while 'w' opens it for both reading and writing.

Question 39

Which Java class is used to represent a file or directory?

Accepted Answer

File

Answer

Stream

Answer

Path

Answer

Directory

Question 40

What is the primary benefit of using a buffer when reading or writing files in Java?

Accepted Answer

Improved performance by reducing the number of disk accesses.

Answer

Ensuring that data is written to disk in the correct order.

Answer

Preventing data corruption during file operations.

Answer

Enabling concurrent file access by multiple threads.

Question 41

Which of the following data types cannot be read from or written to a file in Java?

Accepted Answer

Object

Answer

int

Answer

double

Answer

char

Question 42

In Java, what is the purpose of the 'throws' clause when working with files?

Accepted Answer

It declares that the method may throw checked exceptions related to file operations.

Answer

It forces the method to handle all possible file-related exceptions.

Answer

It marks the method as thread-safe.

Answer

It ensures that the file is closed properly even if an exception occurs.

Question 43

Which Java class is primarily designed for reading data from a text file?

Accepted Answer

FileReader

Answer

FileInputStream

Answer

FileWriter

Answer

FileOutputStream

Question 44

Which Java exception is thrown when a file or directory is not found?

Accepted Answer

FileNotFoundException

Answer

ArrayIndexOutOfBoundsException

Answer

IOException

Answer

NullPointerException

Question 45

What is the primary purpose of using a try-with-resources statement in Java?

Accepted Answer

To ensure automatic closing of resources after their use

Answer

To handle multiple resources simultaneously

Answer

To improve code readability

Answer

To prevent memory leaks

Question 46

Which Java method is used to write data to a file?

Accepted Answer

write()

Answer

seek()

Answer

read()

Answer

close()

Question 47

What is the fundamental difference between a character-oriented stream and a byte-oriented stream?

Accepted Answer

Character-oriented streams operate on characters, while byte-oriented streams operate on bytes

Answer

Character-oriented streams are faster than byte-oriented streams

Answer

Byte-oriented streams can handle binary data, while character-oriented streams cannot

Question 48

Which Java class can be utilized for reading user input from the console?

Accepted Answer

Scanner

Answer

FileReader

Answer

InputStreamReader

Answer

BufferedReader

Question 49

What is the primary function of the flush() method for streams in Java?

Accepted Answer

To force any buffered data to be written to the underlying output device

Answer

To seek to the beginning of the stream

Answer

To close the stream

Question 50

Which of the following is NOT a valid file access mode in Java?

Accepted Answer

wrx

Answer

r

Answer

rw

Answer

w

Question 51

What is the main purpose of using a RandomAccessFile in Java?

Accepted Answer

To allow non-sequential access to different parts of a file

Answer

To write data to a file in an encrypted format

Answer

To read data from a file asynchronously