@EventHandler
private void onInteract(PlayerInteractEvent event) {
    Block block = event.getClickedBlock();
    ItemStack itemStackMain = event.getPlayer().getEquipment().getItemInMainHand();
    if (event.getAction().equals(Action.RIGHT_CLICK_BLOCK) && itemStackMain.getType() == Material.STICK && block != null && block.getType() == Material.CHISELED_BOOKSHELF) {
        ItemStack itemStackSecond = event.getPlayer().getEquipment().getItemInOffHand();
        Inventory inventory = ((InventoryHolder) block.getState()).getInventory();
        Bukkit.broadcastMessage("Original Item " + inventory.getItem(0));
        Bukkit.broadcastMessage("Set Item " + itemStackSecond);
        ((InventoryHolder) block.getState()).getInventory().setItem(0, itemStackSecond);
        Bukkit.broadcastMessage("Seted Item " + inventory.getItem(0));
    }
}