Now, click Multiplayer. Next, you need to add your local server. Click Add
Server and type a name for your server. Use localhost for the server address,
as shown here:
Your server will show up on the pick list (along with any other servers you
regularly connect to), as shown in the following image:
Select your server from the list, then click Join Server. Welcome to the world!
If you get disconnected right away, you may have a version mismatch; double-
check which version of the client you're using.