Solved Move items in inventory

I want to add to an int and set the item to the int number
Video of example:

Test code

Code:

if (cmd.getName().equalsIgnoreCase("chest")){ 
        final Player p = (Player) sender;
        slot.remove(p.getName());
        slot.put(p.getName(), 0);
       
        Random random = new Random();
          final int stop = random.nextInt(15) + 1;
        Material[] materials = Material.values();
        int size = materials.length;
        int index = random.nextInt(size);
        Material randomMaterial = materials[index];
        final ItemStack item = new ItemStack(randomMaterial);
       
                final Inventory inventory = Bukkit.getServer().createInventory(p, 27, ChatColor.BLUE + "Test"); 
                while(!(slot.get(p.getName()) >=stop)){
                    Bukkit.getServer().getScheduler().scheduleSyncDelayedTask(this, new Runnable() {
                          @Override
                        public void run() {
                              slot.put(p.getName(),slot.get(p.getName()) + 1);
                              p.sendMessage(ChatColor.RED + "" + slot.get(p.getName()));
 
                               
                          }
                      },20);
                                   
                               
                                         
                                   
inventory.clear();
inventory.setItem(slot.get(p.getName()), item);
p.sendMessage(ChatColor.GOLD + "" + slot.get(p.getName()));
 
 

 

Try something like this:

Code:java

final Inventory inv = ...;
 
new BukkitRunnable(){
  int slot = 0;
  int goTo = [your random];
 
  @Override
  public void run(){
    if(slot == random){
      //Reached slot, send message? Close inventory? Do whatever.
      this.cancel();
      return;
    } else {
      inv.setItem(slot - 1, new ItemStack(Material.AIR));
      inv.setItem(slot, [item to go in slot]); //Perhaps save in hashmap?
    }
 
    slot += 1;
  }
}.runTaskTimer(plugin, 0L, 2L);