问Gwtbootstrap3。只在java代码中使用引导组件-不使用ui-binder。

EN

  public void onModuleLoad() {
    // Make a new button that does something when you click it.
    Button b = new Button("Jump!", new ClickHandler() {
      public void onClick(ClickEvent event) {
        Window.alert("How high?");
      }
    });

    // Add it to the root panel.
    RootPanel.get().add(b);
  }
}

<button type="button" class="gwt-Button">Jump!</button>

<b:Button type="DEFAULT"/>