Providing choice is good, but interfaces should be designed to make the common case as simple as possible (see the formula on page 6). Almost every user of file I/O will want buffering, so it should be provided by default. For those few situations where buffering is not desirable, the library can provide a mechanism to disable it. Any mechanism for disabling buffering should be cleanly separated in the interface (for example, by providing a different constructor for FileInputStream, or through a method that disables or replaces the buffering mechanism), so that most developers do not even need
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