# Uses of Class
java.nio.channels.FileLock

Packages that use FileLock
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.

## Uses of FileLock in java.nio.channels

Methods in java.nio.channels that return FileLock
Modifier and Type | Method | Description
--- | --- | ---
`FileLock` | FileChannel.`lock()` | Acquires an exclusive lock on this channel's file.
`abstract FileLock` | FileChannel.`lock​(long position, long size, boolean shared)` | Acquires a lock on the given region of this channel's file.
`FileLock` | AsynchronousFileChannel.`tryLock()` | Attempts to acquire an exclusive lock on this channel's file.
`abstract FileLock` | AsynchronousFileChannel.`tryLock​(long position, long size, boolean shared)` | Attempts to acquire a lock on the given region of this channel's file.
`FileLock` | FileChannel.`tryLock()` | Attempts to acquire an exclusive lock on this channel's file.
`abstract FileLock` | FileChannel.`tryLock​(long position, long size, boolean shared)` | Attempts to acquire a lock on the given region of this channel's file.

Methods in java.nio.channels that return types with arguments of type FileLock
Modifier and Type | Method | Description
--- | --- | ---
`Future<FileLock>` | AsynchronousFileChannel.`lock()` | Acquires an exclusive lock on this channel's file.
`abstract Future<FileLock>` | AsynchronousFileChannel.`lock​(long position, long size, boolean shared)` | Acquires a lock on the given region of this channel's file.

Method parameters in java.nio.channels with type arguments of type FileLock
Modifier and Type | Method | Description
--- | --- | ---
`abstract <A> void` | AsynchronousFileChannel.`lock​(long position, long size, boolean shared, A attachment, CompletionHandler<FileLock,​? super A> handler)` | Acquires a lock on the given region of this channel's file.
`<A> void` | AsynchronousFileChannel.`lock​(A attachment, CompletionHandler<FileLock,​? super A> handler)` | Acquires an exclusive lock on this channel's file.