---
title: Inventory
type: docs
weight: 7
---

The inventory system in Hytale handles items, containers, and player inventories.

{{< cards >}}
  {{< card link="itemstacks" title="ItemStacks" subtitle="Working with immutable item stacks" >}}
  {{< card link="containers" title="Containers" subtitle="Inventory and container types" >}}
  {{< card link="transactions" title="Transactions" subtitle="Safe item modifications" >}}
{{< /cards >}}

## Overview

The inventory system follows an immutable pattern:
- **ItemStack** - Immutable representation of items
- **Inventory** - Player's personal inventory
- **ItemContainer** - Generic container for items
- **Transactions** - Safe way to modify items

## Quick Start

```java
import com.hypixel.hytale.server.core.inventory.Inventory;
import com.hypixel.hytale.server.core.inventory.ItemStack;
import java.util.logging.Level;

// Get player inventory
Player player = ...;
Inventory inv = player.getInventory();

// Get item in hand (via Inventory, not directly on Player)
ItemStack hand = inv.getItemInHand();

// Check if item exists
if (hand != null && !hand.isEmpty()) {
    // Use getItemId() - Item.getName() doesn't exist
    getLogger().at(Level.INFO).log("Holding: " + hand.getItemId());
}
```

## Key Concepts

{{< callout type="info" >}}
ItemStack is **immutable**. Methods like `withQuantity()` return a new ItemStack rather than modifying the original.
{{< /callout >}}

```java
// Immutable pattern
ItemStack original = new ItemStack("iron_sword", 1);
ItemStack modified = original.withQuantity(5);  // New instance

// original still has quantity of 1
// modified has quantity of 5
```