| Package | Description | 
|---|---|
| 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.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. | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
FileChannel
A channel for reading, writing, mapping, and manipulating a file. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
SeekableByteChannel | 
SeekableByteChannel.position(long newPosition)
Sets this channel's position. 
 | 
SeekableByteChannel | 
SeekableByteChannel.truncate(long size)
Truncates the entity, to which this channel is connected, to the given
 size. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
static SeekableByteChannel | 
Files.newByteChannel(Path path,
              OpenOption... options)
Opens or creates a file, returning a seekable byte channel to access the
 file. 
 | 
static SeekableByteChannel | 
Files.newByteChannel(Path path,
              Set<? extends OpenOption> options,
              FileAttribute<?>... attrs)
Opens or creates a file, returning a seekable byte channel to access the
 file. 
 | 
SeekableByteChannel | 
SecureDirectoryStream.newByteChannel(T path,
              Set<? extends OpenOption> options,
              FileAttribute<?>... attrs)
Opens or creates a file in this directory, returning a seekable byte
 channel to access the file. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
abstract SeekableByteChannel | 
FileSystemProvider.newByteChannel(Path path,
              Set<? extends OpenOption> options,
              FileAttribute<?>... attrs)
Opens or creates a file, returning a seekable byte channel to access the
 file. 
 | 
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