# Class WriteBuffer

java.lang.Object
org.apache.tomcat.util.net.WriteBuffer

public class WriteBuffer extends Object
Provides an expandable set of buffers for writes. Non-blocking writes can be of any size and may not be able to be written immediately or wholly contained in the buffer used to perform the writes to the next layer. This class provides a buffering capability to allow such writes to return immediately and also allows for the user provided buffers to be re-used / recycled as required.

## Nested Class Summary

Nested Classes
Modifier and Type
Class
Description
`static interface`
`WriteBuffer.Sink`
Interface implemented by clients of the WriteBuffer to enable data to be written back out from the buffer.

## Constructor Summary

Constructors
Constructor
Description
`WriteBuffer(int bufferSize)`

## Method Summary

Modifier and Type
Method
Description
`void`
`add(ByteBuffer from)`
`boolean`
`isEmpty()`
`boolean`
`write(WriteBuffer.Sink sink, boolean blocking)`

### Methods inherited from class Object

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

## Constructor Details

### WriteBuffer

public WriteBuffer(int bufferSize)

## Method Details

### add

public void add(ByteBuffer from)

### isEmpty

public boolean isEmpty()

### write

public boolean write(WriteBuffer.Sink sink, boolean blocking) throws IOException

Throws:
  `IOException`