Update

src/main/java/xyz/mineconomia/mineconomiacore/CustomItems/ItemManager.java

@@ -0,0 +1,44 @@
+package xyz.mineconomia.mineconomiacore.CustomItems;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.inventory.ItemFlag;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.ShapelessRecipe;
+import org.bukkit.inventory.meta.ItemMeta;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ItemManager {
+
+    public static ItemStack Ruler;
+
+    public static void init() {
+            createRuler();
+
+    }
+    private static void createRuler() {
+
+        //Item Info
+        ItemStack item = new ItemStack(Material.STICK, 1);
+        ItemMeta meta = item.getItemMeta();
+        meta.setDisplayName("§e§lPravítko");
+        List<String> lore = new ArrayList<>();
+        lore.add("§7Lore.1:");
+        lore.add("§7Lore.2:");
+        meta.setLore(lore);
+        meta.addEnchant(Enchantment.LUCK, 1, false);
+        meta.addItemFlags(ItemFlag.HIDE_ENCHANTS);
+        item.setItemMeta(meta);
+        Ruler = item;
+
+        //Shapeless Recipe
+        ShapelessRecipe sir = new ShapelessRecipe(NamespacedKey.minecraft("ruler_shapeless"), item);
+        sir.addIngredient(1, Material.STICK);
+        Bukkit.getServer().addRecipe(sir);
+
+    }
+}

src/main/java/xyz/mineconomia/mineconomiacore/MineconomiaCore.java

@@ -1,7 +1,7 @@
 package xyz.mineconomia.mineconomiacore;
 
-import org.bukkit.Bukkit;
 import org.bukkit.plugin.java.JavaPlugin;
+import xyz.mineconomia.mineconomiacore.CustomItems.ItemManager;
 import xyz.mineconomia.mineconomiacore.commands.mcore;
 
 import java.util.Objects;
@@ -17,6 +17,9 @@ public final class MineconomiaCore extends JavaPlugin {
         Logger logger= plugin.getLogger();
         logger.info("Plugin starting");
         Objects.requireNonNull(plugin.getCommand("mcore")).setExecutor(new mcore());
+
+        //CustomItems
+        ItemManager.init();
     }
 
     @Override