Spring Framework Master Class - Java Spring the Modern Way - Step 1-Setting Up an Example Using http://start.spring.io.

The video tutorial introduces the need for using Mockito in testing Spring Boot applications. It guides through setting up a Maven project using Spring Initializer, importing it into Eclipse, and creating a business class with dependencies. The tutorial explains implementing business logic to find the greatest number and discusses the importance of dependencies and unit testing using Mockito.

What is the role of the data service in the business implementation discussed?

What is the significance of the 'find the greatest' method in the business service?

How would you write a unit test for the business implementation that depends on the data service?