| 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. | 
| Modifier and Type | Method and 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 | FileChannel. tryLock()Attempts to acquire an exclusive lock on this channel's file. | 
| FileLock | AsynchronousFileChannel. 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. | 
| abstract FileLock | AsynchronousFileChannel. tryLock(long position,
       long size,
       boolean shared)Attempts to acquire a lock on the given region of this channel's file. | 
| Modifier and Type | Method and 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. | 
| Modifier and Type | Method and Description | 
|---|---|
| <A> void | AsynchronousFileChannel. lock(A attachment,
    CompletionHandler<FileLock,? super A> handler)Acquires an exclusive lock on this channel's file. | 
| 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. | 
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