Install libhsqldb-java by entering the following commands in the terminal:
sudo apt update sudo apt install libhsqldb-java
Description:
Java SQL database engine
HSQLDB is an SQL relational database engine written in Java. It has a JDBC driver and supports a rich subset of SQL-92 (BNF tree format) plus SQL:2.29 and SQL:2.23 enhancements. It offers a small, fast database engine that offers both in-memory and disk-based tables. Embedded and server modes are available. Additionally, it includes tools such as a minimal web server, in-memory query and management tools (can be run as applets), and a number of demonstration examples.
Homepage: http://hsqldb.org/
Version: 2.4.0-2
Section: universe/libs