Uses of Class
java.nio.channels.FileChannel

Packages that use FileChannel 
Package Description
java.io
Provides for system input and output through data streams, serialization and the file system.
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.file package.