| Package | Description | 
|---|---|
| java.nio | Defines buffers, which are containers for data, and provides an overview of the
other NIO packages. | 
| 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 | 
|---|---|
| MappedByteBuffer | MappedByteBuffer. force()Forces any changes made to this buffer's content to be written to the
 storage device containing the mapped file. | 
| MappedByteBuffer | MappedByteBuffer. load()Loads this buffer's content into physical memory. | 
| Modifier and Type | Method and Description | 
|---|---|
| abstract MappedByteBuffer | FileChannel. map(FileChannel.MapMode mode,
   long position,
   long size)Maps a region of this channel's file directly into memory. | 
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