Let's say i have this Code (Text): File file = new File(plugin.getDataFolder(), "weaponshop.yml"); if(!(file.exists())) try { file.createNewFile(); } catch (IOException e1) { e1.printStackTrace(); } FileConfiguration items = YamlConfiguration.loadConfiguration(file); player.sendMessage(ChatColor.AQUA + "Saved your inventory to be the new Weapon Shop!"); ItemStack[] list = player.getInventory().getContents(); items.set("Contents", list); try { items.save(file); } catch (IOException e) { e.printStackTrace(); } } That saves an inventory to a file. So when i get it like this: Code (Text): public void openWeaponShop(Player p) throws IOException { MenuMaker menu = new MenuMaker(plugin, "Weapon Shop", 5); File file = new File(plugin.getDataFolder(), "weaponshop.yml"); if(!(file.exists())) try { file.createNewFile(); } catch (IOException e1) { e1.printStackTrace(); } FileConfiguration items = YamlConfiguration.loadConfiguration(file); ItemStack[] is = (ItemStack[]) items.get("Contents"); Inventory inv = menu.getMenu(); inv.setContents(is); menu.showMenu(p); } I get this :/ Code (Text): [14:32:04 ERROR]: Could not pass event InventoryClickEvent to ZombiesVersusVilla gers v0.6 org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:302) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav a:62) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j ava:509) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j ava:494) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java :1477) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.PacketPlayInWindowClick.a(PacketPlayInWi ndowClick.java:15) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.PacketPlayInWindowClick.handle(PacketPla yInWindowClick.java:65) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:186 ) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java :81) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:7 34) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:2 89) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:5 84) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java :490) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:6 28) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] Caused by: java.lang.ClassCastException: java.util.ArrayList cannot be cast to [ Lorg.bukkit.inventory.ItemStack; at dogeritos.zv.menu.Shop.openWeaponShop(Shop.java:58) ~[?:?] at dogeritos.zv.listeners.MobShop.openShops(MobShop.java:54) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0 _31] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0 _31] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1 .8.0_31] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_31] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:298) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb] ... 13 more > Any ideas?
You are trying to cast a List of ItemStacks to an ItemStack array. This line Code (Java): ItemStack[] is = (ItemStack[]) items.get("Contents"); should be Code (Java): ArrayList = (ArrayList) items.get("Contents"); Then you can convert the list to an array like this Code (Java): ItemStack[] array = is.toArray(new ItemStack[is.size()]);