Toolbar

A toolbar is a widget composed of child widgets which are shown beside each other.

Example
source 
  WPushButton createColorButton(String className, final CharSequence text) {
    WPushButton button = new WPushButton();
    button.setTextFormat(TextFormat.XHTML);
    button.setText(text);
    button.addStyleClass(className);
    return button;
  }

  void ToolBar() {
    WContainerWidget container = new WContainerWidget();
    WToolBar toolBar = new WToolBar((WContainerWidget) container);
    toolBar.addButton(createColorButton("btn-primary", "Primary"));
    toolBar.addButton(createColorButton("btn-danger", "Danger"));
    toolBar.addButton(createColorButton("btn-success", "Success"));
    toolBar.addButton(createColorButton("btn-warning", "Warning"));
    toolBar.addButton(createColorButton("btn-inverse", "Inverse"));
    toolBar.addButton(createColorButton("", "Default"));
    WPushButton resetButton = new WPushButton("Reset");
    toolBar.addSeparator();
    toolBar.addButton(resetButton);
  }