Java.nio.channels.Pipe 提供一种机制，可以按照写入的顺序读取数据。 Pipe.SinkChannel用来向管道写入数据，而Pipe.SourceChannel用来从管道读取数据：

PipeTest.java

package cn.outofmemory.nio.channels;  import java.io.IOException;  import java.nio.ByteBuffer;  import java.nio.channels.Pipe;    public class PipeTest {    public static void main(String[] args) throws IOException {          //初始化Pipe实例        Pipe pipe = Pipe.open();          // 获取写通道        Pipe.SinkChannel skChannel = pipe.sink();          String testData = "Test Data to Check java NIO Channels Pipe.";          ByteBuffer buffer = ByteBuffer.allocate(512);        buffer.clear();        buffer.put(testData.getBytes());          buffer.flip();         //向写通道写入数据        while(buffer.hasRemaining()) {            skChannel.write(buffer);        }        //获得读取数据通道        Pipe.SourceChannel sourceChannel = pipe.source();        buffer = ByteBuffer.allocate(512);         //将读取数据写到控制台             while(sourceChannel.read(buffer) > 0){              //flip方法将当前读取位置设置为0， limit设置为写入数据的size           buffer.flip();              while(buffer.hasRemaining()){                char ch = (char) buffer.get();                System.out.print(ch);            }              //clear方法将buffer的limit设置为其容量capacity， 将position设置为0            buffer.clear();        }      }  }

输出如下：

Test Data to Check java NIO Channels Pipe.