> For the complete documentation index, see [llms.txt](https://openjs.wiki.gd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://openjs.wiki.gd/openjs-components/using-java-in-scripts/javainscripts.md).

# Loading External JAR Libraries in Scripts

The `importLib` function allows your script to dynamically load and use external Java `.jar` libraries placed inside the plugin’s `Libs` folder.

This is useful for accessing additional Java classes or APIs not included by default in the server or plugin environment.

***

#### Syntax

```js
var libLoader = importLib("library-name.jar");
```

* **`library-name.jar`** (`String`): The filename of the JAR library located inside the plugin’s `libs` folder.
  * The path is relative to the plugin’s directory, typically something like:\
    `plugins/openjs/Libs/library-name.jar`

***

#### How It Works

* The library JAR is loaded at runtime, making all its public classes and resources available to your script.
* After loading, you can use the returned loader object to get Java classes from the library, instantiate objects, and call methods.
* This approach enables powerful extensibility by letting you integrate third-party Java libraries into your scripts.

***

#### Example Usage

```js
var RiveScriptLoader = importLib("rivescript-core-0.9.2.jar");
var RiveScriptClass = RiveScriptLoader.loadClass("com.rivescript.RiveScript");

// Create an instance of the RiveScript bot
var riveScript = RiveScriptClass.getConstructor().newInstance();

// Now you can call methods on riveScript
```

In this example, the RiveScript chatbot Java library is loaded from the `Libs` folder, and its main class is instantiated for use in your script.

***

{% hint style="warning" %}

#### Important Notes

* Make sure the `.jar` file is correctly placed inside the `Libs` folder of your plugin, and the filename matches exactly.
* The library must be compatible with the Java runtime your server uses.
* Loading large libraries may impact startup or script execution time.
* Use `importLib` only for trusted JARs to avoid security risks.
  {% endhint %}

***


---

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