Java Edition players have their own version of Realms and can play with other Java players. Bedrock Edition is a better option when it comes to players looking for crossplay in Realms.

One simple command can address this question in both Java and Bedrock Edition, and can also operate on multiplayer worlds and on larger-scale servers and realms.

Like Bedrock, mods, realms and skins can be used in the Java version of Minecraft, and the servers are always packed with people looking to play alongside you.