import com.facebook.react.ReactComponent; import com.facebook.react.ReactInstanceManager; import com.facebook.react.bridge.ReactContext; public class Main { public static void main(String[] args) { ReactInstanceManager reactInstanceManager = ReactInstanceManager.builder() .setApplication(application) .build(); ReactContext reactContext = reactInstanceManager.createReactContextInBackground(); ReactComponent myComponent = new MyComponent(); String html = myComponent.render(reactContext); System.out.println(html); } }