This app will give you real applications in the use of Spring Boot Data JPA.

You will see the full source code of the demo. You will see how to use:
1. Get Entities List from Database with CrudRepository Interface in Spring Boot Data JPA
2. Find Entity by Primary Key with CrudRepository Interface in Spring Boot Data JPA
3. Create New Entity with CrudRepository Interface in Spring Boot Data JPA
4. Update Entity with CrudRepository Interface in Spring Boot Data JPA
5. Delete Entity with CrudRepository Interface in Spring Boot Data JPA
6. Use Conditions in Custom Query in Spring Boot Data JPA
7. Between Clause in Custom Query in Spring Boot Data JPA
8. Like Clause in Custom Query in Spring Boot Data JPA
9. Order By Clause in Custom Query in Spring Boot Data JPA
10. Sum in Custom Query in Spring Boot Data JPA
11. Count in Custom Query in Spring Boot Data JPA
12. Min and Max in Custom Query in Spring Boot Data JPA
13. Avg in Custom Query in Spring Boot Data JPA
14. Projection in Custom Query in Spring Boot Data JPA
15. Join in Custom Query in Spring Boot Data JPA
16. Group By Clause in Custom Query in Spring Boot Data JPA
17. Get Entities List from Database with Native Query in Spring Boot Data JPA
18. Use Limit with Native Query in Spring Boot Data JPA
19. Call Stored Procedure With No Parameters in Native Query in Spring Boot Data JPA
20. Call Stored Procedure With Parameters in Native Query in Spring Boot Data JPA
21. Use And in Query Methods in Spring Boot Data JPA
22. Use Or in Query Methods in Spring Boot Data JPA
23. Use Is,Equals in Query Methods in Spring Boot Data JPA
24. Use Between in Query Methods in Spring Boot Data JPA
25. Use LessThan and LessThanEqual in Query Methods in Spring Boot Data JPA
26. Use GreaterThan and GreaterThanEqual in Query Methods in Spring Boot Data JPA
27. Use OrderBy in Query Methods in Spring Boot Data JPA
28. Use Limit in Query Methods in Spring Boot Data JPA
29. Use StartingWith, EndingWith and Containing in Query Methods in Spring Boot Data JPA

You also see the results after the demo with the illustrations.