JAVA - Day5

Which class in Java is used to read character data from a file?

• FileReader

• FileWriter

• • FileInputStream

• PrintWriter

Which of the following is true about FileWriter?

• It is used for writing character data to a file.

• It is used for writing byte data to a file.

• It reads character data from a file.

• It reads byte data from a file.

Which class provides efficient reading of characters, arrays, and lines?

• FileWriter

• FileReader

• BufferedWriter

• BufferedReader

: What is the primary advantage of using BufferedWriter over FileWriter?

• It allows faster writing by using a buffer.

• It can read data from the console.

• It supports serialization.

• It is used for reading object data.

How can you create a thread in Java?

• By extending the Thread class.

• By implementing the Runnable interface.

• By using a lambda expression.

• All of the above.

Which method is called when a thread starts?

• run()

• start()

• execute()

• init()

Which of the following is not a valid thread state in Java?

• New

• Running

• Waiting

• Pending

In which state does a thread move after calling the start() method?

• New

• Running

• Runnable

• Blocked

Which class in Java is used to create a thread pool?

• ThreadPoolExecutor

• ExecutorService

• ScheduledExecutorService

• All of the above

Which method allows a thread to wait until another thread completes?

• sleep()

• wait()

• notify()

• yield()