title: GWT: Move Widget Animation
body: <p>I want to make animation moving a button from nX, nY to n1X, n1Y during 1000 ms.</p>
  
  <p>My class:
  public class Start extends Animation implements EntryPoint {</p>
  
  <pre><code>AbsolutePanel panel = new AbsolutePanel();
  Label label;
  Button b;
  int a;
  
  @Override
  protected void onUpdate(double progress) {
  
      panel.setWidgetPosition(b, 2*2, 2*2);
      a++;
  }
  
  public void onModuleLoad() {
      panel = new AbsolutePanel();
      b = new Button("Click!");
      label.setText("111");
  
      RootPanel.get().add(label);
      RootPanel.get().add(panel);
  
          }
  </code></pre>
  
  <p>}</p>