package eternalrankupsystem.eternalrankupsystem;

import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;

public class GUIEvent implements Listener {

    @EventHandler
    public void ClickInventory(InventoryClickEvent e) {
        Player player = (Player) e.getWhoClicked();

        if (ChatColor.stripColor(e.getView().getTitle()).equals("랭크")) {
            player.sendMessage("RANK GUI OPEN");
        }
    }
}

package eternalrankupsystem.eternalrankupsystem;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Color;
import org.bukkit.Material;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.Item;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemFlag;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.material.MaterialData;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class GUI {
    public static void OpenGui(Player player) {
        Inventory inv = Bukkit.createInventory(null, 27, "§3랭크");
        player.openInventory(inv);
    }
}

/랭크 명령어 입력하면 OpenGui 함수 실행하여 GUI는 잘 열리는데, 인벤 클릭하면 RANK GUI OPEN 이 나와야하는데 안나오네요...

도와주세요...ㅜ