How to pass object between layers in dependency injection

See more: (untagged)

I have a service .Which call a host of controllers and that in turn call a host of DAOs.These DAos have a lot of class instance created that they use to do there job.
My problem is while trying to implement DI where do i create these objects

Now where do i move creation of all obj types object and similarly for DAOs and Controller.
Thanks I have been realy having a hard time with this

Just to clarify I understand i have to implement Interface and pass object around in those interface.But what will act as my container in this scenario.Where will i do new object creation.

class ServiceDemo{
conlroller1= new controller1();
conlroller2= new controller2();
}
class controller1{
DAO1= new DAO1();
DAO2= new DAO2();
DAO3= new DAO3();
DAO4= new DAO4();
}
class DAO1{
obj1= new obj1();
obj2= new obj2();
obj3= new obj3();
obj4= new obj4();
obj5= new obj5();
}