Master Hibernate and JPA with Spring Boot in 100 Steps - Step 03 - Create findByID Using JPA Entity Manager

The video tutorial guides viewers through creating a course repository in Java using Spring and JPA. It covers defining repository methods like find, save, and delete, and demonstrates using CommandLineRunner to test these methods. The tutorial also explains how to insert data into a course table using SQL and handle errors such as missing Spring beans. Logging techniques are also discussed to track application behavior.

What is the primary purpose of creating a CourseRepository in the application?

• To handle course-related operations

• To manage student records

• To manage user authentication

• To perform data analytics

Which method in the CourseRepository is used to retrieve a course by its ID?

• fetchCourse

• findById

• retrieveCourse

• getCourseById

What is the purpose of the 'save' method in the CourseRepository?

• To list all courses

• To delete a course

• To retrieve a course

• To insert or update a course

In the demo application, which interface is implemented to run code at startup?

• ApplicationRunner

• CommandLineRunner

• BootRunner

• StartupRunner

What is the role of the '@Autowired' annotation in the demo application?

• To start the application

• To log application errors

• To automatically wire beans

• To manually configure beans

How can a 'bean not found' error be resolved in a Spring application?

• By adding the correct annotation

• By restarting the application

• By clearing the cache

• By updating the database

What is the purpose of creating a 'toString' method in the course entity?

• To save the course to the database

• To print the course details in a readable format

• To convert the course to a JSON object

• To delete the course from the database