McAdvertListener.java

package me.bubbleguj.mcadvert;

import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;

public class McAdvertListener implements Listener{

    public McAdvert plugin;

    public McAdvertListener(McAdvert plugin) {

        this.plugin = plugin;
        plugin.getServer().getPluginManager().registerEvents(this, plugin);
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {

        //General
        final Player p = event.getPlayer();

        //Event
        plugin.getServer().getScheduler().scheduleAsyncDelayedTask(plugin, new Runnable() {

            public void run() {
                if(p.hasPlayedBefore()){
                    return;
                }

                String firstjoin = plugin.getConfig().getString("config.messages.firstjoin");
                String howto = plugin.getConfig().getString("config.messages.howto");

                p.sendMessage(ChatColor.GREEN + "[McAdvert] " + firstjoin);
                p.sendMessage(ChatColor.GREEN + "[McAdvert] " + howto);
            }
        }, 20);
    }
}