Android APIs
public interface

WritableByteChannel

implements Channel
java.nio.channels.WritableByteChannel
Known Indirect Subclasses

Class Overview

A WritableByteChannel is a type of Channel that can write bytes.

Write operations are synchronous on a WritableByteChannel, that is, if a write is already in progress on the channel then subsequent writes will block until the first write completes. It is undefined whether non-write operations will block.

Summary

Public Methods
abstract int write(ByteBuffer buffer)
Writes bytes from the given buffer to the channel.
[Expand]
Inherited Methods
From interface java.io.Closeable
From interface java.lang.AutoCloseable
From interface java.nio.channels.Channel

Public Methods

public abstract int write (ByteBuffer buffer)

Added in API level 1

Writes bytes from the given buffer to the channel.

The maximum number of bytes that will be written is the remaining() number of bytes in the buffer when the method invoked. The bytes will be written from the buffer starting at the buffer's position.

The call may block if other threads are also attempting to write on the same channel.

Upon completion, the buffer's position() is updated to the end of the bytes that were written. The buffer's limit() is unmodified.

Parameters
buffer the byte buffer containing the bytes to be written.
Returns
  • the number of bytes actually written.
Throws
NonWritableChannelException if the channel was not opened for writing.
ClosedChannelException if the channel was already closed.
AsynchronousCloseException if another thread closes the channel during the write.
ClosedByInterruptException if another thread interrupt the calling thread during the write.
IOException another IO exception occurs, details are in the message.