Fulfillment of the connectivity contract that allows the Java application to integrate with a back-end database is the promise the JPA persistence.xml file brings to fruition. What is the ...

Here's a quick JDBC with HSQLDB tutorial to get you up and running with Java database connectivity and the popular HyperSQL database.

Write, build, and run an example application that persists data to and from a relational database using Hibernate, JPA, and the repository pattern.

Project Loom massively increases resource efficiency while preserving backward compatibility with Java threads. Here's a look at Loom and the roadmap ahead.