Features and Organization
The APIs of NIO were designed to provide access to the low-level I/O operations of modern operating systems. Although the APIs are themselves relatively high-level, the intent is to facilitate an implementation that can directly use the most efficient operations of the underlying platform.
The Java NIO APIs are provided in the java.nio package and its subpackages. The documentation by Oracle identifies these features.
- Buffers for data of primitive types
- Character set encoders and decoders
- A pattern-matching facility based on Perl-style regular expressions (in package
java.util.regex) - Channels, a new primitive I/O abstraction
- A file interface that supports locks and memory mapping of files up to
Integer.MAX_VALUEbytes (2 GiB) - A multiplexed, non-blocking I/O facility for writing scalable servers
Read more about this topic: New I/O
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