private HashMap<UUID, Inventory> chest = new HashMap<UUID, Inventory>();

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        Player player = event.getPlayer();
        Inventory inventory = Bukkit.createInventory(player, 9, "name");

        chest.put(player.getUniqueId(), inventory);
    }

    @EventHandler
    public void onPlayerInterac(PlayerInteractEvent event) {
        if(event.getAction() != Action.RIGHT_CLICK_BLOCK || event.getClickedBlock() == null || event.getClickedBlock().getType() != Material.ENDER_CHEST) return;

        Player player = event.getPlayer();

        if(!chest.containsKey(player.getUniqueId())) return;

        event.setCancelled(true);

        player.sendMessage("message");
        player.openInventory(chest.get(player.getUniqueId()));
    }