Quiz for BufferedReader & BufferedWriter

Q1: Which package contains BufferedReader and BufferedWriter?

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

Q2: Which method of BufferedReader reads a line of text?

A. readLine() B. read() C. nextLine() D. getLine()

Q3: Which constructor is valid for creating a BufferedReader?

A. BufferedReader(InputStreamReader) B. BufferedReader(FileWriter) C. BufferedReader(OutputStream) D. BufferedReader(Scanner)

Q4: What is the purpose of BufferedWriter?

A. To read text line-by-line B. To write binary data C. To write text efficiently D. To read binary data

Q5: Which method of BufferedWriter adds a new line?

A. newline() B. write('\n') C. newLine() D. nextLine()

Q6: What must be done after writing to a BufferedWriter?

A. Nothing B. Flush or close it C. Only close the stream D. Only use System.exit

Q7: What exception does readLine() throw?

A. IOException B. FileNotFoundException C. ParseException D. ArrayIndexOutOfBoundsException

Q8: Which method is used to write a string using BufferedWriter?

A. print() B. write() C. put() D. appendLine()

Q9: What is the main advantage of using buffering in I/O?

A. Less memory usage B. Faster compilation C. Improved I/O efficiency D. Code readability

Q10: What is returned by readLine() when the end of the stream is reached?

A. null B. empty string C. -1 D. EOF