--- title: "Create Application Class" slug: "create-application-class" updated: 2026-08-13T12:09:42Z published: 2026-08-13T12:09:42Z canonical: "support.whatfix.com/create-application-class" --- > ## Documentation Index > Fetch the complete documentation index at: https://support.whatfix.com/llms.txt > Use this file to discover all available pages before exploring further. # Create Application Class The Application class in Android is the base class within an Android app that contains all other components such as activities and services. While [integrating Whatfix Mobile SDK with your Android app](/mobile/docs/integrate-whatfix-mobile-sdk-with-android), you need to start the Whatfix Mobile SDK in your Application class inside the onCreate() function. If you haven't created the Application class, use the following steps to create it: 1. Open your main AndroidManifest.xml. 2. Add android:name=".NewApplicationClass" to your tag. ```plaintext          ...     ``` 1. Hover your cursor over android:name=".NewApplicationClass" or press Alt + Enter or Option + Enter and select **Create class** NewApplicationClass. **Java** ```plaintext import android.app.Application; public class NewApplicationClass extends Application {   @Override   public void onCreate() {      super.onCreate();      // TODO: Start Leap SDK here   } } ``` **Kotlin** ```plaintext import android.app.Application class NewApplicationClass : Application() {   override fun onCreate() {      super.onCreate()      // TODO: Add Leap SDK initialization here   } } ```