SQL Server 2005's Type 4 JDBC driver provides database connectivity from a Java application. Though the driver class and connection URL are a bit different in this version, connectivity is a snap.

Microsoft has open sourced the Java language extension it added to SQL Server 2019 last year.

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

Java developers -- so, most software developers -- need to know Java security issues. Make sure your app properly validates, and don't only rely on SecurityManager.