Hook methods in View Controller in SAP UI5

Hi UI5 Experts,

Can anyone please explain in detail the following hook methods and their purpose?

1)OnInIt

2)OnBeforeRendering

3)OnAfterRendering

In my opinion that Init method executes when the view is instantiated for the first time.

OnBeforeRendering invokes before the view is displayed.But I placed the breakpoint in OnBeforeRendering method.It executes only once i.e first when view is instantiated.

Please correct if I am wrong.

Regards,

Arjun