13. The BufferedWriter Stream

Answer:
The close() method will throw an exception, which will be caught. The catch block will write an error message that is not 
 really correct. You could fix the error message, or add another try/catch structure to the program that deals only with closing the file.

The BufferedWriter Stream

Disk input and output is more efficient when a buffer is used. For our small example programs it doesn't matter much. However, programs that do extensive I/O should use buffers. Use BufferedWriter to do this with a character output stream.

BufferedWriter(Writer out)  
    Construct a buffered character-output stream 

Since a FileWriter is a Writer it is the correct type for the parameter. Here is how this might be done:

BufferedWriter out
   =  new BufferedWriter(new FileWriter("stuff.txt"));  

Question 13:
Do all operating systems end lines of text in the same way?