Chapter Test (exercises)

• 1. Why does Java define streams of both bytes and characters?
• 2. Since console input and output are text-based, why does Java still use byte streams for this purpose?
• 3. Show how to open a file to read bytes.
• 4. Show how to open a file for reading characters.
• 5. Show how to open a file for random access I/O.
• 6. How can we convert a numeric string like “123.23” to its binary equivalent?
• 7. Write a program that copies a text file. In the process, make it convert all spaces to hyphens. Use the file byte stream classes. Use the traditional approach to close a file by calling close( ) explicitly.
• 8. Rewrite the program described in Question 7 so that it uses character stream classes. This time, use the try-with-resources statement to automatically close the file.
• 9. What type of stream is System.in?
• 10. What does the read() method of InputStream return when the end of the stream is reached?
• 11. What type of stream is used when reading binary data?
• 12. Reader and Writer are at the top of the __________ class hierarchy.
• Chapter 10 Using I/O
• 13. The try-with-resources statement is used to ____________ ________
• ____________.
• 14. When we use the traditional file closing method, we usually
• closing a file inside a finally block is a good approach. True or false?

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