CDI-JSF: Use @Inject to annotate a common method of a bean

As you probably know, when a bean is instantiated the first called method is the corresponding constructor. Afterwards, we have the method annotated with @PostConstruct. When this method is called we say that the dependency injections is done and we can exploit the injected artifacts. By annotating a common method with @Inject, we basically instruct CDI to call this method also when the bean in instantiated. For example, the below initFooBuzzBizz() is called after the constructor, but before the @PostConstruct:

@Named

@RequestScoped

public class TheBean {

 private static final Logger LOG = Logger.getLogger(TheBean.class.getName());

 public TheBean() {

  LOG.info("TheBean#constructor called ...");

  Messages.addGlobalInfo("TheBean#constructor called ...");

 }

 @PostConstruct

 public void init() {

  LOG.info("TheBean#init() called ...");

  Messages.addGlobalInfo("TheBean#init() called ...");

 }

 public void callFooBuzzBizzAction() {

  LOG.info("TheBean#callFooBuzzBizz() called ...");

  Messages.addGlobalInfo("TheBean#callFooBuzzBizz() called ...");

 }

 @Inject

 private void initFooBuzzBizz(Foo foo, Buzz buzz, Bizz bizz) {

  LOG.info("TheBean#initFooBuzzBizz() called ...");

  Messages.addGlobalInfo("TheBean#initFooBuzzBizz() called ...");

  foo.fooify();

  buzz.buzzify();

  bizz.bizzify();

 }

}

The output will be:

• TheBean#constructor called ...
• TheBean#initFooBuzzBizz() called ...
• Foo#fooify() called ...
• Buzz#buzzify() called ...
• Bizz#bizzify() called ...
• TheBean#init() called ...
• TheBean#callFooBuzzBizz() called ...

The complete example is available here,