How to change player name in minecrtaft java 1.19.4 plugin?

[polar ore]

i want to change the playername in a plugin but its not working. The plugin is for a Paper server! player.setdisplayname id not working.

[trim shore]

<@&987246652869971988> please have a look, thanks.

[trim shore]

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[marsh timber]

How is it not working? Do you get an error? Can you send us the code

[polar ore]

the code is in onjoin and i only set the playername but its not working. there is no error

[marsh timber]

I’m not going to be able to help since I don’t have Minecraft plug-in experience but I can ask for information so somebody else can help

[marsh timber]

Can you send the code?

[polar ore]

public void onJoin(PlayerJoinEvent event){

    event.getPlayer().setDisplayName("Owner" + event.getPlayer().getName());
}

[polar ore]

this is it

its a test

[oak imp]

Note that this name will not be displayed in game, only in chat and places defined by plugins.

[polar ore]

yes

[polar ore]

how to set all the names of the player? chat,tablist,world

[oak imp]

not sure if its even possible to change the name in the world

probably via packets

[polar ore]

how?

[oak imp]

idk would need to look it up

you know how packets work?

[polar ore]

no

[oak imp]

these might help, but you first need to understand packets:
https://wiki.vg/Protocol
https://wiki.vg/Protocol#Player_Info_Update

[polar ore]

i dont understand

[oak imp]

or you might try this method:
tho you probably want to change the name above the head

[polar ore]

not working

[oak imp]

I think its kinda hard to change it so you can try this plugin as a library:
https://www.spigotmc.org/resources/nicknamer-integrated-api.5341/

more information on how to change it yourself:

It's really annoying to change a player name, you'll need to despawn the player entity & resend it again with a new gameprofile.
https://www.spigotmc.org/threads/how-to-change-player-name.327448/