MigrateFromGWT

public class ButtonApp implements Runnable {
 
   public static void onLoad() {
        alert("Initializing...");
        html("<button id='x'>Click me!</button>");
        onClick("x", new Runnable() {
            public void run() {
                alert("Button was clicked!");
                later(new ButtonApp(), 1000);
            }
        });
    }
 
    public void run() {
        alert("One second after that!");
    }
 
  public static native void later(Runnable r, int time) /*-{
        window.setTimeout(function() {
            r.@java.lang.Runnable::run()();
        }, time);
    }-*/;
 
    public static native void html(String html) /*-{
        var b = document.getElementsByTagName("body")[0];
        b.innerHTML = html;
    }-*/;
 
    public static native void alert(String msg) /*-{
       alert(msg);
    }-*/;
 
    public static native void onClick(String id, Runnable r) /*-{
       document.getElementById(id).onclick = function() {
        r.@java.lang.Runnable::run()();
       };
    }-*/;
 
}