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Answer:

  1. The int value in answer is transformed into chars (and appended to the string).
  2. Then, as the data is written to disk, the chars are transformed into 8-bit UTF.

Summary of Class FileWriter

Here is a list of some of the constructors and methods used with FileWriter. All of the methods are inherited from its ancestors. For a complete list of methods refer to the Java documentation on your disk (if you downloaded it) or on the Web.

Constructors

FileWriter(String fileName) 
   An IOException is thrown 
   if the file cannot be created.
            
FileWriter(String fileName, boolean append)            
   An IOException is thrown 
   if the file cannot be opened for appending.

Methods

public void close() throws IOException
    Flush the stream and close the file.

public void flush() throws IOException
    Flush the stream.

public void write(String str) throws IOException
    Write a string.

When you write() characters to a file, you are asking the operating system to write to the disk, which might not do the work until later. The flush() method ensures that all data is actually sent to the disk.

QUESTION 11:

Why not do a flush() after each write() to be sure that all the data is written to the disk?