The Java ecosystem is bursting with tools and frameworks for just about every programming need. Here are seven open source Java projects you don't want to miss.

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

Get to know the Java persistence standard based on Hibernate and learn how to use JPA to store and manage Java objects in a relational or NoSQL database.

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 ...