Java I/O

Java I/O support is included in the java.io and java.nio packages. Together these packages include the following features:

File and device I/O

Object serialization

Buffers for data of primitive types

Character-set encoders and decoders

Channels, a new primitive I/O abstraction

A file interface that supports locks and memory mapping

A multiplexed, non-blocking I/O facility for writing scalable servers

API Specification

java.io (description) - Supports system input and output, object serialization, and basic access to the file system
java.nio (description) - Defines buffers for bulk memory operations. Buffers may be allocated in direct memory for high performance.
java.nio.channels (description) - Defines channels, an abstraction for devices capable of performing I/O operations; defines selectors for multiplexed, non-blocking I/O
java.nio.channels.spi (description) - Provides implementations for channels
java.nio.charset (description) - Defines charsets, decoders, and encoders, for translating between bytes and Unicode characters
java.nio.charset.spi (description) - Provides implementations for charsets

Examples

NIO Examples

Enhancements

More Information

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