Create a listener

How to create a listener.

For high-performance plugins, prefer events without reflection.

Register events without reflection

This will register events without reflection:


@Override
public void onEnable() {
    this.getServer().getPluginManager().subscribeEvent(PlayerJoinEvent.class, event -> {
        event.setJoinMessage(TextFormat.DARK_GREEN + event.getPlayer().getName() + " joined the game!");
    }, this);
 
    this.getServer().getPluginManager().subscribeEvent(PlayerQuitEvent.class, event -> {
        event.setQuitMessage(TextFormat.DARK_GREEN + event.getPlayer().getName() + " left the game!");
    }, this);
}

Register events with reflection

This will register events with reflection:


public class EventListener implements Listener {
 
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        event.setJoinMessage(TextFormat.DARK_GREEN + event.getPlayer().getName() + " joined the game!");
    }
 
    @EventHandler
    public void onPlayerLeave(PlayerQuitEvent event) {
        event.setQuitMessage(TextFormat.DARK_GREEN + event.getPlayer().getName() + " left the game!");
    }
}

Then register it in your plugin:


@Override
public void onEnable() {
    this.getServer().getPluginManager().registerEvents(new EventListener(), this);
}