Quiz for FileReader & FileWriter

Q1: Which package provides FileReader and FileWriter classes?

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

Q2: What is FileReader used for?

A. Reading binary files B. Writing text files C. Reading character files D. Writing character files

Q3: Which method reads a single character in FileReader?

A. readLine() B. readChar() C. read() D. next()

Q4: What does FileWriter do?

A. Reads from file B. Writes binary data C. Writes character data D. Creates directories

Q5: Which constructor is used to append data to a file using FileWriter?

A. FileWriter(file) B. FileWriter(file, true) C. FileWriter(file, false) D. FileWriter(file, append)

Q6: Which method writes a single character to a file in FileWriter?

A. writeChar() B. append() C. write(int c) D. put()

Q7: Which exception must be handled with FileReader/FileWriter?

A. NullPointerException B. IOException C. NumberFormatException D. ArrayIndexOutOfBoundsException

Q8: What happens if the file does not exist when using FileReader?

A. File is created B. IOException is thrown C. File is empty D. Data is cleared

Q9: How can you ensure file resources are closed automatically?

A. Manually call close() B. Use System.gc() C. Use try-with-resources D. Use thread.sleep()

Q10: What encoding does FileReader use by default?

A. ASCII B. UTF-8 C. Platform default encoding D. Binary