1. Let's create a User class to support our operations:

public class User {

    private String name;
    private String email;
    private Integer[] profiles;
    
    public User(String name, String email, Integer[] profiles) {
        this.name = name;
        this.email = email;
        this.profiles = profiles;
    }

    //DO NOT FORGET TO IMPLEMENT THE GETTERS AND SETTERS
}

2. Then a UserView class to do all the JSON operations:

@ViewScoped
@Named
public class UserView implements Serializable{
    
    private static final JsonBuilderFactory BUILDERFACTORY = 
    Json.createBuilderFactory(null);
    private final Jsonb jsonbBuilder = JsonbBuilder.create();
    
    private String fromArray;
    private String fromStructure;
    private String fromUser;
    private String fromJpointer;
    
    public void loadUserJson(){
        loadFromArray();
        loadFromStructure();
        loadFromUser();
    }
    
    private void loadFromArray(){
        JsonArray array = BUILDERFACTORY.createArrayBuilder()
                .add(BUILDERFACTORY.createObjectBuilder()
                        .add("name", "User1")
                        .add("email", "[email protected]"))
                .add(BUILDERFACTORY.createObjectBuilder()
                        .add("name", "User2")
                        .add("email", "[email protected]"))
                .add(BUILDERFACTORY.createObjectBuilder()
                        .add("name", "User3")
                        .add("email", "[email protected]")) 
                .build(); 
        fromArray = jsonbBuilder.toJson(array);
    }
    
    private void loadFromStructure(){
        JsonStructure structure = 
        BUILDERFACTORY.createObjectBuilder()
                .add("name", "User1")
                .add("email", "[email protected]")
                .add("profiles", BUILDERFACTORY.createArrayBuilder()
                        .add(BUILDERFACTORY.createObjectBuilder()
                                .add("id", "1")
                                .add("name", "Profile1"))
                        .add(BUILDERFACTORY.createObjectBuilder()
                                .add("id", "2")
                                .add("name", "Profile2")))
                .build();
        fromStructure = jsonbBuilder.toJson(structure);

        JsonPointer pointer = Json.createPointer("/profiles");
        JsonValue value = pointer.getValue(structure);
        fromJpointer = value.toString();
    }
    
    private void loadFromUser(){
        User user = new User("Elder Moraes", 
        "[email protected]", 
        new Integer[]{1,2,3});
        fromUser = jsonbBuilder.toJson(user);
    }

    //DO NOT FORGET TO IMPLEMENT THE GETTERS AND SETTERS
}

3. Then we create a JSF page to show the results:

 <h:body>
 <h:form>
 <h:commandButton type="submit" action="#{userView.loadUserJson()}" 
 value="Load JSONs" />
 
 <br />
 
 <h:outputLabel for="fromArray" value="From Array" />
 <br />
 <h:inputTextarea id="fromArray" value="#{userView.fromArray}" 
 style="width: 300px; height: 150px" />
 <br />
 
 <h:outputLabel for="fromStructure" value="From Structure" />
 <br />
 <h:inputTextarea id="fromStructure" value="#{userView.fromStructure}" 
 style="width: 300px; height: 150px" />
 <br />

 <h:outputLabel for="fromUser" value="From User" />
 <br />
 <h:inputTextarea id="fromUser" value="#{userView.fromUser}" 
 style="width: 300px; height: 150px" />

  <br />
  <h:outputLabel for="fromJPointer" value="Query with JSON Pointer 
  (from JsonStructure Above)" />
  <br />
  <h:inputTextarea id="fromJPointer" 
   value="#{userView.fromJpointer}"  
  style="width: 300px; height: 100px" />
 </h:form>
 </h:body>