Index

17. Buffered character file I/O

Opening a file with a buffer


    PrintWriter out = new PrintWriter(
                      new BufferedWriter(
                      new FileWriter("books.txt"));

Opening a file for an append operation


    PrintWriter out = new PrintWriter(
                      new BufferedWriter(
                      new FileWriter("books.txt", true)));

Opening with autoflush feature turned on


    PrintWriter out = new PrintWriter(
                      new BufferedWriter(
                      new FileWriter("books.txt")), true);

Note: Closing the output file is important:
```
    out.close();
```
close() ensures that the buffer holding the output will be emptied -- all output generated by the program is sent to the output file.

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