Java EE 8 Cookbook

How it works...

First, we are building a server to manage our event and observers:

public static void main(String[] args){    try(SeContainer container =      SeContainerInitializer.newInstance().initialize()){        container            .getBeanManager()            .fireEvent(new ExampleEvent("event: "             + System.currentTimeMillis()));    }}

This will give us all the resources needed to run the recipe as if it was a Java EE server.

Then we build an observer:

public void thisEventBefore(        @Observes @Priority(Interceptor.Priority.APPLICATION - 200)         MyEvent event){      System.out.println("thisEventBefore: " + event.getValue());}

So, we have three important topics:

• @Observes: This annotation is used to tell the server that it needs to watch the events fired with MyEvent
• @Priority