Alpha v1.0.16, along with server 0.1.1, is a version of Java Edition that added new features and commands for servers.
Additions
General
Servers
Added ban/pardon commands to ban and unban a player from the game.
Added ban-ip/pardon-ip commands to ban and unban specific IP addresses.
Added op/deop commands to add/remove a player from the operator list.
Added server operators. They can send server commands by typing a slash followed by a server command. Server operators can also build/destroy blocks near the spawn area.