How to use

getMarkupId

method

in

org.apache.wicket.markup.html.panel.Panel

  @Override
  protected void onEvent(AjaxRequestTarget target) {
    target.appendJavaScript("window.BSTAB.changeUrl('" + currentPanel.getMarkupId() + "','#" + currentPanel.getMarkupId() + "')");
  }
});

  @Override
  protected void onComponentTag(ComponentTag tag) {
    super.onComponentTag(tag);
    tag.put("href", "#"+content.getMarkupId());
  }
}.add(new Label("title", tabs.get(i).getTitle())));

  @Override
  protected void populateItem(ListItem<Pair<String, Integer>> item) {
    Panel currentPanel = tabMap.get(item.getModelObject());
    if(item.getIndex() == 0){
      item.add($b.classAppender("active"));
    }
    WebMarkupContainer tabAnchor = new WebMarkupContainer("tabAnchor");
    tabAnchor.add($b.attr("href", "#"+currentPanel.getMarkupId()));
    tabAnchor.add($b.attr("aria-controls", currentPanel.getMarkupId()));
    tabAnchor.add(new Label("header-text", item.getModelObject().getLeft()));
    item.add(tabAnchor);
  }
};

  @Override
  protected void populateItem(ListItem<Pair<String, Integer>> item) {
    Panel currentPanel = tabMap.get(item.getModelObject());
    if (item.getIndex() == 0) {
      item.add($b.classAppender("active"));
    }
    WebMarkupContainer tabAnchor = new WebMarkupContainer("tabAnchor");
    tabAnchor.add($b.attr("href", "#" + currentPanel.getMarkupId()));
    tabAnchor.add($b.attr("aria-controls", currentPanel.getMarkupId()));
    tabAnchor.add(new Label("header-text", item.getModelObject().getLeft()));
    configureChangeUrlOnTabClick(currentPanel, tabAnchor);
    item.add(tabAnchor);
  }
};