Time for action – grouping options in SelectOneMenu

Let us see how to display SelectOneMenu options in groups, by performing the following step:

1. Create the SelectOneMenu component with option groups using the SelectItemGroup and SelectItem objects:

   @ManagedBean
   @RequestScoped
   public class SelectionController 
   {
       private List<SelectItem> tagItems = new ArrayList<SelectItem>();
       private String selectedTagItem;
       
       public SelectionController() 
       {
           SelectItemGroup g1 = new SelectItemGroup("JavaSE");
           g1.setSelectItems(new SelectItem[] {new SelectItem("Threads", "Threads"), new SelectItem("JDBC", "JDBC")});
       
           SelectItemGroup g2 = new SelectItemGroup("JavaEE");
           g2.setSelectItems(new SelectItem[] {new SelectItem("JPA", "JPA"), new SelectItem("JMS", "JMS"), new SelectItem("EJB", "EJB")});
   
           tagItems.add(g1...