COMP 274 Week 6 Homework

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COMP 274 Week 6 Homework

1. What is the difference between throwing an exception and catching an exception?

2. How does a method declare that it can throw an exception? How does it actually throw an exception? Use Java code to illustrate your answer.

3. Explain the difference between a checked exception and an unchecked exception.

4. What happens if an exception does not have a matching catch block?

5. What can a catch block do with the exception object that it receives?

6. What is the purpose of the finally block?

7. What is the difference between text I/O and binary I/O?

8. What happens if you try to create a FileInputStream on a file that does not exist?

9. What happens if you try to create a FileOutputStream on a file that does not exist?

10. What are BufferedInput/OutputStreams and why are they used? Write some Java code to illustrate how to create a BufferedInputStream.

11. Write the line of code you would need to open the file c:tempmydata.txt for reading primitive data values from the file such as doubles, floats, ints, etc

12. Write lines of code to create object input and output streams for the file c:tempmydata.out.

13. What is the difference between sequential access and random access?

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