Package | Description |
---|---|
java.io |
Provides for system input and output through data streams,
serialization and the file system.
|
java.lang |
Provides classes that are fundamental to the design of the Java
programming language.
|
java.net |
Provides the classes for implementing networking applications.
|
java.nio.channels |
Defines channels, which represent connections to entities that are capable of
performing I/O operations, such as files and sockets; defines selectors, for
multiplexed, non-blocking I/O operations.
|
java.nio.channels.spi |
Service-provider classes for the
java.nio.channels package. |
java.nio.file |
Defines interfaces and classes for the Java virtual machine to access files,
file attributes, and file systems.
|
java.nio.file.spi |
Service-provider classes for the
java.nio.file package. |
java.util |
Contains the collections framework, legacy collection classes, event model,
date and time facilities, internationalization, and miscellaneous utility
classes (a string tokenizer, a random-number generator, and a bit array).
|
Class | Description |
---|---|
FileChannel |
A channel for reading, writing, mapping, and manipulating a file.
|
Class | Description |
---|---|
Channel |
A nexus for I/O operations.
|
Class | Description |
---|---|
DatagramChannel |
A selectable channel for datagram-oriented sockets.
|
ServerSocketChannel |
A selectable channel for stream-oriented listening sockets.
|
SocketChannel |
A selectable channel for stream-oriented connecting sockets.
|
Class | Description |
---|---|
AsynchronousByteChannel |
An asynchronous channel that can read and write bytes.
|
AsynchronousChannel |
A channel that supports asynchronous I/O operations.
|
AsynchronousChannelGroup |
A grouping of asynchronous channels for the purpose of resource sharing.
|
AsynchronousCloseException |
Checked exception received by a thread when another thread closes the
channel or the part of the channel upon which it is blocked in an I/O
operation.
|
AsynchronousFileChannel |
An asynchronous channel for reading, writing, and manipulating a file.
|
AsynchronousServerSocketChannel |
An asynchronous channel for stream-oriented listening sockets.
|
AsynchronousSocketChannel |
An asynchronous channel for stream-oriented connecting sockets.
|
ByteChannel |
A channel that can read and write bytes.
|
Channel |
A nexus for I/O operations.
|
ClosedChannelException |
Checked exception thrown when an attempt is made to invoke or complete an
I/O operation upon channel that is closed, or at least closed to that
operation.
|
CompletionHandler |
A handler for consuming the result of an asynchronous I/O operation.
|
DatagramChannel |
A selectable channel for datagram-oriented sockets.
|
FileChannel |
A channel for reading, writing, mapping, and manipulating a file.
|
FileChannel.MapMode |
A typesafe enumeration for file-mapping modes.
|
FileLock |
A token representing a lock on a region of a file.
|
GatheringByteChannel |
A channel that can write bytes from a sequence of buffers.
|
InterruptibleChannel |
A channel that can be asynchronously closed and interrupted.
|
MembershipKey |
A token representing the membership of an Internet Protocol (IP) multicast
group.
|
MulticastChannel |
A network channel that supports Internet Protocol (IP) multicasting.
|
NetworkChannel |
A channel to a network socket.
|
Pipe |
A pair of channels that implements a unidirectional pipe.
|
Pipe.SinkChannel |
A channel representing the writable end of a
Pipe . |
Pipe.SourceChannel |
A channel representing the readable end of a
Pipe . |
ReadableByteChannel |
A channel that can read bytes.
|
ScatteringByteChannel |
A channel that can read bytes into a sequence of buffers.
|
SeekableByteChannel |
A byte channel that maintains a current position and allows the
position to be changed.
|
SelectableChannel |
A channel that can be multiplexed via a
Selector . |
SelectionKey |
A token representing the registration of a
SelectableChannel with a
Selector . |
Selector |
A multiplexor of
SelectableChannel objects. |
ServerSocketChannel |
A selectable channel for stream-oriented listening sockets.
|
SocketChannel |
A selectable channel for stream-oriented connecting sockets.
|
WritableByteChannel |
A channel that can write bytes.
|
Class | Description |
---|---|
AsynchronousChannelGroup |
A grouping of asynchronous channels for the purpose of resource sharing.
|
AsynchronousCloseException |
Checked exception received by a thread when another thread closes the
channel or the part of the channel upon which it is blocked in an I/O
operation.
|
AsynchronousServerSocketChannel |
An asynchronous channel for stream-oriented listening sockets.
|
AsynchronousSocketChannel |
An asynchronous channel for stream-oriented connecting sockets.
|
Channel |
A nexus for I/O operations.
|
ClosedChannelException |
Checked exception thrown when an attempt is made to invoke or complete an
I/O operation upon channel that is closed, or at least closed to that
operation.
|
DatagramChannel |
A selectable channel for datagram-oriented sockets.
|
InterruptibleChannel |
A channel that can be asynchronously closed and interrupted.
|
Pipe |
A pair of channels that implements a unidirectional pipe.
|
SelectableChannel |
A channel that can be multiplexed via a
Selector . |
SelectionKey |
A token representing the registration of a
SelectableChannel with a
Selector . |
Selector |
A multiplexor of
SelectableChannel objects. |
ServerSocketChannel |
A selectable channel for stream-oriented listening sockets.
|
SocketChannel |
A selectable channel for stream-oriented connecting sockets.
|
Class | Description |
---|---|
SeekableByteChannel |
A byte channel that maintains a current position and allows the
position to be changed.
|
Class | Description |
---|---|
AsynchronousFileChannel |
An asynchronous channel for reading, writing, and manipulating a file.
|
FileChannel |
A channel for reading, writing, mapping, and manipulating a file.
|
SeekableByteChannel |
A byte channel that maintains a current position and allows the
position to be changed.
|
Class | Description |
---|---|
ReadableByteChannel |
A channel that can read bytes.
|
Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2025, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.