Pipe (Java SE 12 & JDK 12 )

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 the 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

Nested Classes
Modifier and Type	Class	Description
`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

Constructors
Modifier Constructor Description

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

Method Summary

Modifier and Type	Method	Description
`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 declared in 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