Pipe (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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java.nio.channels
Class Pipe

java.lang.Object
  |
  +--java.nio.channels.Pipe

public abstract class Pipe
extends Object

A pair of channels that implements a unidirectional pipe.

A pipe consists of a pair of channels: A writable sink channel and a readable source channel. Once some bytes are written to the sink channel they can be read from source channel in exactly the order in which they were written.

Whether or not a thread writing bytes to a pipe will block until another thread reads those bytes, or some previously-written bytes, from the pipe is system-dependent and therefore unspecified. Many pipe implementations will buffer up to a certain number of bytes between the sink and source channels, but such buffering should not be assumed.

Since:: 1.4

Nested Class Summary

static class Pipe.SinkChannel
          A channel representing the writable end of a Pipe.

static class Pipe.SourceChannel
          A channel representing the readable end of a Pipe.

Constructor Summary

protected Pipe()
          Initializes a new instance of this class.

Method Summary

static Pipe open()
          Opens a pipe.

abstract Pipe.SinkChannel sink()
          Returns this pipe's sink channel.

abstract Pipe.SourceChannel source()
          Returns this pipe's source channel.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Pipe

protected Pipe()

Initializes a new instance of this class.

Method Detail

source

public abstract Pipe.SourceChannel source()

Returns this pipe's source channel.

Returns:: This pipe's source channel

sink

public abstract Pipe.SinkChannel sink()

Returns this pipe's sink channel.

Returns:: This pipe's sink channel

open

public static Pipe open()
                 throws IOException

Opens a pipe.

The new pipe is created by invoking the openPipe method of the system-wide default SelectorProvider object.

Returns:: A new pipe
Throws:: IOException - If an I/O error occurs