Note that this lab solution requires a newer version of the HSQLDB library
than we used in earlier labs, since the older version doesn't
work completely in Java 17.

The newer library is in this project's WEB-INF/lib: hsqldb-jdk8.jar and in 
{Lab Installation Directory}/lib folder.

You need to use hsqldb-jdk8.jar to start the HSQLDB server
and create the tables used by this app (they are in casestudy.sql).

You need to copy hsqldb-jdk8.jar to the Tomcat "lib" folder and delete the
older hsqldb.jar.