Java File Handling

Here are 10 essential multiple-choice questions on Java File Handling, covering key concepts.

Last Updated : Apr 4, 2025

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Question 1

Which package contains the File class in Java?

A
java.io.file
B
java.file
C
java.io
D
java.nio.file

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Question 2

What is the purpose of the createNewFile() method in the File class?

A
To open an existing file
B
To create a new directory
C
To create a new file if it does not exist
D
To delete a file

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Question 3

What will file.exists() return if the file doesn’t exist?

A
true
B
false
C
null
D
Throws Exception

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Question 4

Which of the following can read text from a file line-by-line in Java?

A
FileWriter
B
BufferedWriter
C
Scanner
D
PrintWriter

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Question 5

What is the output of this code?

Java

File f = new File("demo.txt");
System.out.println(f.isDirectory());

Assume demo.txt is a file, not a folder.

A
true
B
false
C
null
D
Compilation Error

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Question 6

Which method is used to get the size of a file in bytes?

A
getSize()
B
getLength()
C
length()
D
size()

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Question 7

What does delete() method of the File class return when deletion fails?

A
Throws an exception
B
Returns false
C
Returns null
D
Returns the file name

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Question 8

What is the correct way to create a directory in Java?

A
File.mkdir()
B
File.createDirectory()
C
File.createDir()
D
File.makeDirectory()

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Question 9

Which Java class is best suited for writing text to a file?

A
Scanner
B
FileReader
C
BufferedWriter
D
InputStreamReader

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Question 10

What exception must be handled when performing file operations in Java?

A
IOException
B
InterruptedException
C
SQLException
D
ArrayIndexOutOfBoundsException

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