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Example: InStyle1.ui.xml (cont)User ControlResultShow Random NumberNum will go hereN/AHurts your eyes,doesn't it?CSS classes can be applied to regular HTMLelements just like a regular CSS class.Multiple classes are separated by space.Adds another class to the existing CSSclasses assigned to this widget. Note theplural addStyleNames.41Example: InStyle1.java...public class InStyle1 extends Composite {private static InStyle1UiBinder uiBinder =GWT.create(InStyle1UiBinder.class);interface InStyle1UiBinderextends UiBinder {}@UiField Button numberButton;@UiField HTML numberResult;public InStyle1() {initWidget(uiBinder.createAndBindUi(this));}42}@UiHandler("numberButton")void displayRandomNumber(ClickEvent event) {numberResult.setText("Number: " + Math.random() * 10);}