Latest tutorials

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Spring Boot
Spring Interview · Feb 5, 2018 · 1 min read
Data Integration
Spring Interview · Feb 5, 2018 · 1 min read
Spring Data – Save
Spring Data · Oct 4, 2017 · 1 min read
First you will have to create an interface and extend JPARepository to inherit its save and saveAndFlush methods. Note – JpaRepository interface extends PagingAndSortingRepository interface which further extends CrudRepository. CrudRepository extends Repository interface. public interface…
Spring Data Update
Spring Data · Oct 1, 2017 · 1 min read
Updating an entity with the JPARepository requires 2 trips to the database. First, you need to fetch the database record, update it with your new values. Then second, you will need to update the database record. This is very simple to do using JPARepository. @Data @AllArgsConstructor…
Class Photos
Fundamental Problems · Feb 15, 2017 · 2 min read
It’s photo day at the local school, and you’re the photographer assigned to take class photos. The class that you’ll be photographing has an even number of students, and all these students are wearing red or blue shirts. In fact, exactly half of the class is wearing red shirts, and the other half…