Java FileChannel.position() is a method in the Java FileChannel class that gets or sets the file position for reading or writing operations. It returns the current position, or sets a new position to specify where to begin reading or writing. Introduced in Java 2007 with Java 7, position() is essential for efficient file I/O operations when working with large files or memory-mapped buffers.

https://docs.oracle.com/javase/8/docs/api/java/nio/channels/FileChannel.html