magento 2 how dependency injection worked

Question

I know this question is asked many time by another user but all of them describe "how we can use magento DI" ? they does not speak about how magento pass object that constructor method needed or how magento find constructor need which object

Answer 1

The di.xml file configures which dependencies are injected by the object manager. You can also specify sensitive configuration settings using di.xml

Magento loads the configuration in the following stages:

• Initial (app/etc/di.xml)

• Global (/etc/di.xml)

• Area-specific (/etc//di.xml)