How to Deploy a Vaadin Application as a WAR on Tomcat 11

If you want to run a Vaadin application on an external servlet container like Apache Tomcat 11, you need to package your application as a WAR (Web Application Archive) instead of[...]

Java 16 Records with JPA and jOOQ

The new Java version 16 includes a new feature: Records

Java Persistence Done Right

When it comes to accessing relational databases with Java, people usually think of two options: SQL or ORM

Introduction to Database Migrations with Spring Boot and Flyway

If you are working with Spring Boot there are several ways to initialize the database.

How to JOIN two Entities without Mapped Relationship

Often you don’t want to map all relationships in an entity model (a blog post about this topic in detail will follow).