<dependency> <groupId>com.vaadin</groupId> <artifactId>vaadin-icons</artifactId> <version>3.0.11</version> </dependency> gradle implementation 'com.vaadin:vaadin-icons:3.0.11' import com.vaadin.icons.VaadinIcons; import com.vaadin.ui.Button; public class MyApplication extends Application { public static void main(String[] args) { MyApplication app = new MyApplication(); app.run(); } public void run() { Button myButton = new Button("Click me", VaadinIcons.SMILE); } }