Java for Beginners with Hands-On Program and Capstone Project - Creating Repository Interface and Implementation Layer f

The video tutorial explains the creation of a repository layer in a software architecture, focusing on the Book Repository interface and its implementation. It covers the steps to create the interface, implement the add book method, and discusses Java's default method properties. The tutorial concludes with a brief overview of the repository's role and hints at the next steps involving the service layer.

What is the primary role of the repository layer in an application architecture?

• To handle user interface interactions

• To manage business logic

• To perform data validation

• To interact with the database

What is another name for the Book Repository interface?

• Book Service

• Book Controller

• Book DAO

• Book Model

What is the purpose of the 'add book' method in the Book Repository interface?

• To fetch all books from the database

• To add a new book entity and return its ID

• To update book details

• To delete a book from the database

In Java, what is the default visibility of methods inside an interface?

• Private

• Protected

• Public and abstract

• Package-private

What does the 'implements' keyword signify in the Book Repository Impl class?

• It marks the class as final

• It indicates the class is abstract

• It signifies the class is implementing an interface

• It denotes a class inheritance

What is the purpose of the 'override' annotation in the implementation class?

• To highlight a method is implementing an interface method

• To specify a method is overriding a superclass method

• To indicate a method is overloaded

• To mark a method as deprecated

What is the next step after implementing the Book Repository interface?

• Developing the user interface

• Working on the service layer

• Creating a new database schema

• Testing the repository methods