Código completo

package kwtags.eventos;

import java.util.List;

import org.bukkit.Server;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;

import br.com.devpaulo.legendchat.api.events.ChatMessageEvent;
import kwtags.metodos.KwConfig;
import kwtags.metodos.KwMetodos;
import me.kewi.KwTags;

public class KwEventos implements Listener {

    private static KwTags pl = KwTags.getPlugin();
    private static Server s = pl.getServer();
    private static FileConfiguration cnf = pl.getConfig();
    private static FileConfiguration m = KwConfig.getTags();

    @EventHandler
    public void quandoClicar(InventoryClickEvent e) {
        if (e.getWhoClicked() instanceof Player) {
            Player p = (Player) e.getWhoClicked();
            String pp = p.getName();
            ItemStack click = e.getCurrentItem();
            Inventory invs = e.getInventory();
            int tamanho, id;
            String nome;
            tamanho = cnf.getInt("Tags.GUI.Tamanho");
            nome = KwMetodos.getReplaced("GUI.Nome");
            Inventory inv = s.createInventory(null, tamanho, nome);
            if (invs.getName().equalsIgnoreCase(inv.getName())) {
                if (click != null) {
                    for (String tags : cnf.getConfigurationSection("Tags.GUI.Tags").getKeys(false)) {
                        id = cnf.getInt("Tags.GUI.Tags." + tags + ".ID");
                        for (String tag : m.getConfigurationSection("Tags").getKeys(false)) {
                            List<String> jogadores = m.getStringList("Tags." + tag + ".Usuarios");
                            if (click.getTypeId() == id) {
                                if (!jogadores.contains(pp)) {
                                    jogadores.add(pp);
                                    m.set("Tags." + tag + ".Usuarios", jogadores);
                                    KwConfig.saveFile();
                                    p.sendMessage(KwMetodos.getReplaced("Selecionou").replace("{tag}", tags));
                                    p.closeInventory();
                                    e.setCancelled(true);
                                } else {
                                    jogadores.remove(pp);
                                    m.set("Tags." + tag + ".Usuarios", jogadores);
                                    KwConfig.saveFile();
                                    p.sendMessage(KwMetodos.getReplaced("Removida").replace("{tag}", tags));
                                    p.closeInventory();
                                    e.setCancelled(true);
                                }
                            }
                        }
                    }
                    e.setCancelled(true);
                } else {
                    e.setCancelled(true);
                }
            }
        }
    }

    @EventHandler
    public void quandoFalar(ChatMessageEvent e) {
        Player p = e.getSender();
        String pp = p.getName();
        String kwtags = "kwtags";
        for (String tags : cnf.getConfigurationSection("Tags.GUI.Tags").getKeys(false)) {
            for (String tag : m.getConfigurationSection("Tags").getKeys(false)) {
                List<String> jogadores = m.getStringList("Tags." + tag + ".Usuarios");
                if (jogadores.contains(pp)) {
                    if (e.getTags().contains(kwtags)) {
                        e.setTagValue(kwtags, KwMetodos.getReplaced("GUI.Tags." + tags + ".TAG"));
                    }
                }
            }
        }
    }
}