how do i remove a x amount of itemstack from player inventory ?

hello, i can remove a x amount of regular item but i don't knows how i can remove a x amount of itemstack.
Exemple : i want to remove 128 itemstack from inventory.
Pls help me! sorry for my english

With Regular items :

Code:java

 
if(inv2 != null && inv2.getName() != null && inv2.getName().equals("§7Pumpkin Craft")) {
            e.setCancelled(true);
            if(it != null) {
                if(it.getType() == Material.PUMPKIN && it.getItemMeta().getDisplayName().equals("§aGreat Pumpkin")) {
                    int gamount = itemsinInventory(p.getInventory(), Material.PUMPKIN);
                    int unamount = itemsinInventoryIT(p.getInventory(), Material.PUMPKIN);
                    int amount = gamount - unamount;
                    int recipe = 576;
                    if(amount < recipe) {
                        p.sendMessage("You don't have the require items");
                    }else {
 
                        p.getInventory().removeItem(new ItemStack[] {
                                new ItemStack(Material.PUMPKIN, recipe)
                        });
                        p.getInventory().addItem(CustomItemsforPumpkin.GREATPUMPKIN.getItems());
                    }
 
 
                }
 
 
                }
 

Code:java

 
public int itemsinInventory(Inventory inv, Material... search) {
        List<Material> wanted = Arrays.asList(search);
        int found = 0;
 
        for(ItemStack item : inv.getContents()) {
            if(item != null && wanted.contains(item.getType())) 
                found += item.getAmount();
        }
 
        return found;
 
    }
    public int itemsinInventoryIT(Inventory inv, Material... search) {
        List<Material> wanted = Arrays.asList(search);
        int found = 0;
        for(ItemStack item : inv.getContents()) {
            if(item != null && wanted.contains(item.getType())) {
                if(item.getItemMeta().hasDisplayName()) {
                    found += item.getAmount();
                }
            }
        }
        return found;
 
    }
 

With ItemStack :

Code:java

 
if(it.getType() == Material.PUMPKIN && it.getItemMeta().getDisplayName().equals("§2Giant Pumpkin")) {
                int amount = gpumpkin(p.getInventory(), Material.PUMPKIN);
                int recipe = 576;
                p.sendMessage(amount + "");
                if(amount < recipe) {
                    p.sendMessage("You don't have the items");
                }else {
                    //remove 576 custom pumpkin (ItemStack)
                    p.getInventory().addItem(CustomItemsforPumpkin.GIANTPUMPKIN.getItems());
                }
            }
 

Code:java

 
ublic int gpumpkin(Inventory inv, Material... search) {
        List<Material> wanted = Arrays.asList(search);
        int found = 0;
        for(ItemStack item : inv.getContents()) {
            if(item != null && wanted.contains(item.getType())) {
                if(item.getItemMeta().getDisplayName().equals("§aGreat Pumpkin")) {
                    found += item.getAmount();
                }
            }
        }
        return found;
 
    }
 

 

https://hub.spigotmc.org/javadocs/b...removeItem-org.bukkit.inventory.ItemStack...-
This allows you to remove an itemstack from an inventory. The itemstack should be whatever item is in that inventory that you want gone, and
https://hub.spigotmc.org/javadocs/b...Stack.html#ItemStack-org.bukkit.Material-int-
lets you make an ItemStack object have a certain amount to it to choose how much is taken out.

I have no idea if it works, but it probably does?