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.

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

The Netbeans Java environment lets you create a connection to a database and retrieve records from the database to display in your Java forms. You can also add records to the tables using the ...