13.4.2. BufferedReader and BufferedWriter

Try these first

1. 1.

   What is the primary benefit of using BufferedReader?

   Hint

   Consider how it handles data.

2. 2.

   How do you create a BufferedWriter instance?

   Hint

   Think about how a FileWriter is used.

3. 3.

   What is a BufferedReader primarily used for?

   • Writing data to files
   • Reading data efficiently from files
   • Closing file resources

   Hint

   Focus on reading operations.

4. 4.

   True or False: BufferedWriter allows you to write data in chunks to minimize calls to the file system.

   • True
   • False

   Hint

   Consider how multiple writes are handled.

5. 5.

   Implement a Java program that reads a file using BufferedReader and counts the number of lines. Discuss what happens if the file does not exist.

   Hint

   Ensure you validate the file existence.

6. 6.

   Design a Java application that writes user input to a file using BufferedWriter. Ensure the user can input multiple lines until they type 'exit'. What exceptions might you need to handle?

   Hint

   Consider using try-with-resources.