Inventory Swapping

Im creating an advanced banking plugin and want to get when a player puts an gold nugget from his inven to his echest how would i do this get the amount of that item and set it to null?

Anyone know?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

If you want to simply delete that item - set the material to Material.AIR

 

That solves that part but how to get when they put the item in there echest?

 

InventoryClickEvent. Check the click type to see if they placed an item, check the inventory and then check the item.

 

But they could then place an item anywhere and it would work the same

 

Check the inventory like I said. See if its this magical chest that eats your gold.

 

This is my code but it doesnt work for several reasons:
1: It only allows one gold to be put in at once
2. If you go from enderchest to inventory it still will register which i dont want
3. Doesnt get rid of the gold

Code:java

@EventHandler
    public void onBank(InventoryClickEvent event)
    {
        if (event.getWhoClicked() instanceof Player)
        {
            Player player = (Player) event.getWhoClicked();
            InventoryType topType = event.getView().getTopInventory().getType();
            InventoryType botType = event.getView().getBottomInventory().getType();
            ItemStack nugget = event.getCurrentItem(); //the item that is part of the event
            player.sendMessage("test");
            if (topType.equals(InventoryType.ENDER_CHEST))
            {
                player.sendMessage("Test 1");
                if (invAction(event.getAction()) && event.getCurrentItem().equals(item) && event.getSlot() == 0) //checks to see if it is the special item with the lore, if it is, it cancels the event
                {
                    player.sendMessage("Test 2 item");
                    event.setCancelled(true);
                }
                if (invActionPlace(event.getAction()) && !event.getInventory().getType().equals(botType)) //checks to see if the item is being placed or swapped
                {
                    player.sendMessage("test 3");
                    if (item.getType().equals(Material.GOLD_NUGGET)) //checks to see if the item is a gold nugget
                    {
                        player.sendMessage("Test 3 final");
                        player.getInventory().remove(nugget); //removes the item
                        int amt = item.getAmount(); //Gets the amount of the item
                        String a = amt + "";
                        double bala = econ.getBalance(player.getName());
                        double bal = bala + amt;
                        String balance = String.valueOf(bal);
                        String mess = ChatColor.GOLD + a + ChatColor.GOLD + " Gold" + ChatColor.GREEN + " Added!" + ChatColor.GREEN + " New Balance: " + ChatColor.GOLD + balance + ChatColor.GOLD + " Gold";
                        player.sendMessage(mess);
                        econ.depositPlayer(player.getName(), amt);
 
                    }
                }
            }
        }
    }
}
 

 

Give the inventory some special metadata, cancel the event and remove the curser item of the player and im not sure why its only letting you put in one at a time. Show me the invAction and invActionPlace methods