Tech Mahindra interview questions

1. Questions about abstract class constructor, private variables in abstract class etc etc. 2. why cant we create instance of an abstract class? what stops us? have you ever tried creating one? 3. MVC questions -- like how to pass textbox val back to controller etc etc. 4. data annotation, 1 to many relationship in entity framework,primary and composite key in entity framework. 5. can I assign null to an int in c#? how?

Core Java Basic,Annotations