Uses of Class java.nio.channels.FileChannel (Java SE 12 & JDK 12 )

## 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.

- - ### Uses of FileChannel in java.io

    Methods in java.io that return FileChannel
    Modifier and Type | Method | Description
    --- | --- | ---
    `FileChannel` | FileInputStream.`getChannel()` | Returns the unique `FileChannel` object associated with this file input stream.
    `FileChannel` | FileOutputStream.`getChannel()` | Returns the unique `FileChannel` object associated with this file output stream.
    `FileChannel` | RandomAccessFile.`getChannel()` | Returns the unique `FileChannel` object associated with this file.

  - ### Uses of FileChannel in java.nio.channels

    Methods in java.nio.channels that return FileChannel
    Modifier and Type | Method | Description
    --- | --- | ---
    `FileChannel` | FileLock.`channel()` | Returns the file channel upon whose file this lock was acquired.
    `static FileChannel` | FileChannel.`open​(Path path, OpenOption... options)` | Opens or creates a file, returning a file channel to access the file.
    `static FileChannel` | FileChannel.`open​(Path path, Set<? extends OpenOption> options, FileAttribute<?>... attrs)` | Opens or creates a file, returning a file channel to access the file.
    `abstract FileChannel` | FileChannel.`position​(long newPosition)` | Sets this channel's file position.
    `abstract FileChannel` | FileChannel.`truncate​(long size)` | Truncates this channel's file to the given size.

    Constructors in java.nio.channels with parameters of type FileChannel
    Constructor | Description
    --- | ---
    `FileLock​(FileChannel channel, long position, long size, boolean shared)` | Initializes a new instance of this class.

  - ### Uses of FileChannel in java.nio.file.spi

    Methods in java.nio.file.spi that return FileChannel
    Modifier and Type | Method | Description
    --- | --- | ---
    `FileChannel` | FileSystemProvider.`newFileChannel​(Path path, Set<? extends OpenOption> options, FileAttribute<?>... attrs)` | Opens or creates a file for reading and/or writing, returning a file channel to access the file.