Solved How to make players unable to change the GUI?

Spigot 1.16.
I know several ways, but I'm not sure if it's right.
My English may be bad.

GUI:

Code:

    public static Inventory getGUI (String playerName) {
        Inventory mAGUI = Bukkit.createInventory(null, 9, confHandler.getBS("GUI.name"));

        ItemStack glass = new ItemStack(Material.getMaterial(confHandler.getBS("GUI.glass")));
        mAGUI.setItem(0, glass);
        mAGUI.setItem(8, glass);

        for (String section:confHandler.getKA("GUI.sections")) {
            ItemStack sectionItem = new ItemStack(Material.getMaterial(confHandler.getBS("GUI.sections."+section+".material")));
            ItemMeta sectionItemMeta = sectionItem.getItemMeta();
            sectionItemMeta.setDisplayName(confHandler.getBS("GUI.sections."+section+".name"));
            sectionItemMeta.setLore(confHandler.getBSA("GUI.sections."+section+".lore", playerName));
            sectionItem.setItemMeta(sectionItemMeta);
            mAGUI.addItem(sectionItem);
        }

        return mAGUI;
    }

 

I need to make this GUI immutable.

Is it correct to use the following method?

GUI:

Code:

    public static InventoryHolder inventoryHolder;

    public static Inventory getGUI (String playerName) {
        inventoryHolder = new InventoryHolder() {
            @Override
            public Inventory getInventory() {
                return null;
            }
        };

        Inventory mAGUI = Bukkit.createInventory(inventoryHolder, 9, confHandler.getBS("GUI.name"));

Event:

Code:

   @EventHandler
    public void onInventoryClick(InventoryClickEvent event) {
        if (event.getInventory().getHolder()==inventoryHolder) {
            event.setCancelled(true);
        }
    }

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

 

Yes, I've tried it. It works. But maybe there is a shorter and more correct way.

 

No, you are correct -- Utilizing the InventoryClickEvent to cancel clicks. It is the "shortest" and "more correct way"!

 

Is that sarcasm? If so, can you suggest your own option to prohibit GUI changes?

 

Not sarcasm, sorry.