Java File Handling

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

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Question 1

Which package contains the File class in Java?

  • java.io.file

  • java.file

  • java.io

  • java.nio.file

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Question 2

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

  • To open an existing file

  • To create a new directory

  • To create a new file if it does not exist

  • To delete a file

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Question 3

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

  • true

  • false

  • null

  • Throws Exception

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Question 4

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

  • FileWriter

  • BufferedWriter

  • Scanner

  • 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.

  • true

  • false

  • null

  • Compilation Error

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Question 6

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

  • getSize()

  • getLength()

  • length()

  • size()

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Question 7

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

  • Throws an exception

  • Returns false

  • Returns null

  • Returns the file name

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Question 8

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

  • File.mkdir()

  • File.createDirectory()

  • File.createDir()

  • File.makeDirectory()

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Question 9

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

  • Scanner

  • FileReader

  • BufferedWriter

  • InputStreamReader

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Question 10

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

  • IOException

  • InterruptedException

  • SQLException

  • ArrayIndexOutOfBoundsException

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There are 10 questions to complete.

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