I have a Java hashmap with a a list of a groups:
private HashMap<String, String> listGroups = new HashMap<>();
The question is how I can display the values from the hashmap into the selectonemenu?
See Question&Answers more detail:osI have a Java hashmap with a a list of a groups:
private HashMap<String, String> listGroups = new HashMap<>();
The question is how I can display the values from the hashmap into the selectonemenu?
See Question&Answers more detail:osThe <f:selectItems>
already supports maps.
<f:selectItems value="#{bean.listGroups}" />
The map key becomes the option label and the map value becomes the option value.
That said, you probably want to use LinkedHashMap
instead of HashMap
if displaying the map entries in insertion order is important, or TreeMap
if you want to automatically sort them by map key.