Java File I/O Quiz

What is the main use of FileReader in Java?

• To write text files

• To read text files

• To write binary files

• To read binary files

What is the use of FileWriter in Java?

• To read text files

• To write text files

• To read binary files

• To write binary files

What type of exception needs to be caught when working with FileReader and FileWriter?

• NullPointerException

• IOException

• ArithmeticException

• ArrayIndexOutOfBoundsException

What is the main difference between FileReader and BufferedReader?

• BufferedReader is faster because it uses a buffer to read data.

• BufferedReader is only used for writing data to files.

• FileReader is faster because it reads data without a buffer.

• FileReader is used for binary files while BufferedReader is used for text files.

What will happen if you use FileWriter without setting the append mode (true) on an existing file?

• The content of the file will be deleted and overwritten with new data.

• New data will be added to the end of the file.

• Old data will be retained and new data will be written over it.

• The program will throw an error if the file already exists.

What is the main benefit of using try-with-resources in Java when working with files?

• Ensures files are always open even if an error occurs.

• Ensures files are automatically closed after use, even if an error occurs.

• Prevents the program from writing data to files.

• Helps handle NullPointerException.

What combination of classes is most suitable for copying the contents of input.txt to a new file output_copy.txt?

• FileReader and FileWriter

• BufferedReader and BufferedWriter

• FileInputStream and FileOutputStream

• Scanner and PrintWriter

What is the method used to read a file line by line using BufferedReader?

• read()

• readLine()

• readBaris()

• readData()

What is the advantage of using BufferedWriter over FileWriter for large files?

• BufferedWriter is slower because it adds line by line.

• BufferedWriter reduces the number of file write operations by using a buffer.

• FileWriter is better for performance in all cases.

• BufferedWriter is only suitable for binary files.