CDI events

CDI provides event-handling facilities. Events allow loosely coupled communication between different CDI beans. A CDI bean can fire an event, then one or more event listeners handle the event.

Firing CDI events

The following example is a new version of the CustomerInfoController class we discussed in the previous section. The class has been modified to fire an event every time the user navigates to a new page:

package com.ensode.jakartaeebook.cdievents.controller;
import jakarta.enterprise.context.Conversation;
import jakarta.enterprise.context.RequestScoped;
import jakarta.inject.Inject;
import jakarta.inject.Named;
import java.io.Serializable;
import com.ensode.jakartaeebook.cdievents.event.NavigationInfo;
import com.ensode.jakartaeebook.cdievents.model.Customer;
import jakarta.enterprise.event.Event;
@Named
@RequestScoped
public class CustomerInfoController implements Serializable {
    @Inject
    private Conversation...