To invite your own friends to join your Realm, the process is different for Java and Bedrock. How to invite friends to a Realm in Java To invite friends to your Realm in Minecraft Java, you should: ...

In Minecraft, thousands of players can join a single world to play together. The multiplayer features in both Java and Bedrock Edition are used by millions of players regularly.

Minecraft players connecting with others in 2021 #1 - Java To join another player's world on Java edition, which is for PC, the host must open their world to LAN.