Immediate Component Vs Delayed Component

[AdobeID24]

what is delayed and immediate component in simple words ?

i found somehwere in google :

• Delayed Component
  Activation is not done until there is a request for a service object. Therefore even class loading and instantiation can be delayed until that time. A Delayed Component needs to specify a service.
• Immediate Component
  Activated as soon as its dependencies are satisfied. An Immediate Component does not need to specify a service

I didnt get this specifying service things ?

As per my understanding if we put

@Component(immediate = true/false)

we will get Delayed and Immediate component on that basis .

Can anyone please explain to me in my case if I am having one service Hellosrviceimplem.java and helloservice interface ....and put @Component(immediate = true/false) what would be the scenerio?

[smacdonald2008 · Accepted solution]

FROM OSGi docs --

The OSGi Declarative services specification defines three types of components:

• Immediate Components are immediately created when the providing bundle is started and may or may not provide services
• Delayed Components provide services but are only created when used by a service consumer.
• Factory Components are created on demand by calling the ComponentFactory.newInstance(Dictionary) method of the Component Factory service registered for the component.

More info -- java - How to start immediate = false component? - Stack Overflow