Chest Opening Animation

I'm making a crate plugin but i need help adding a chest animation with the reward coming out of it when clicking the chest with a key

Code:

Code:

        if (e.getClickedBlock().getType() == Material.CHEST && is.getItemMeta().getDisplayName().equals(Utils.chat("&8[&d!&8] &eRank Crate &8[&d!&8]"))) {
            if (e.getPlayer().getItemInHand().getType() == Material.NETHER_STAR && is.getItemMeta().getDisplayName().equals(Utils.chat("&8[&a!&8] &aRank&7 Crate Key &8[&a!&8]"))) {
                int  n = random.nextInt(100) + 1;
                if (n<=1) {
                    for (ItemStack Demon : player.getInventory().getContents()) {
                        if (is.getType() == Material.PAPER && is.hasItemMeta() && is.getItemMeta().hasDisplayName() && is.getItemMeta().getDisplayName().equalsIgnoreCase("&8&l[&4!&8] &r&4&lDemon&r&7 Rank &8&l[&4!&8]&r")) {
                            ItemStack item = Demon;
                            player.getInventory().addItem(Demon);
                        }
                    }
                } 
                for (ItemStack key : player.getInventory().getContents()) {
                    if (is.getType() == Material.NETHER_STAR && is.hasItemMeta() && is.getItemMeta().hasDisplayName() && is.getItemMeta().getDisplayName().equalsIgnoreCase("&8[&a!&8] &aRank&7 Crate Key &8[&a!&8]")) {
                        player.getInventory().remove(key);

                    }
                }
            } else {
                player.sendMessage(Utils.chat("&8[&d!&8]&e You need a Rank Key to open this Crate"));
            }
        }