| 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.spi | Service-provider classes for the  java.nio.filepackage. | 
| Modifier and Type | Method and Description | 
|---|---|
| static AsynchronousFileChannel | AsynchronousFileChannel. open(Path file,
    OpenOption... options)Opens or creates a file for reading and/or writing, returning an
 asynchronous file channel to access the file. | 
| static AsynchronousFileChannel | AsynchronousFileChannel. open(Path file,
    Set<? extends OpenOption> options,
    ExecutorService executor,
    FileAttribute<?>... attrs)Opens or creates a file for reading and/or writing, returning an
 asynchronous file channel to access the file. | 
| abstract AsynchronousFileChannel | AsynchronousFileChannel. truncate(long size)Truncates this channel's file to the given size. | 
| Constructor and Description | 
|---|
| FileLock(AsynchronousFileChannel channel,
        long position,
        long size,
        boolean shared)Initializes a new instance of this class. | 
| Modifier and Type | Method and Description | 
|---|---|
| AsynchronousFileChannel | FileSystemProvider. newAsynchronousFileChannel(Path path,
                          Set<? extends OpenOption> options,
                          ExecutorService executor,
                          FileAttribute<?>... attrs)Opens or creates a file for reading and/or writing, returning an
 asynchronous file channel to access the file. | 
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