<dependency>
  <groupId>hsqldb</groupId>
  <artifactId>hsqldb</artifactId>
  <version>1.8.0.7</version>
</dependency>

implementation 'hsqldb:hsqldb:1.8.0.7'

implementation("hsqldb:hsqldb:1.8.0.7")

libraryDependencies += "hsqldb" % "hsqldb" % "1.8.0.7"

@Grapes(
  @Grab(group='hsqldb', module='hsqldb', version='1.8.0.7')
)

<dependency org="hsqldb" name="hsqldb" rev="1.8.0.7" />

[hsqldb/hsqldb "1.8.0.7"]

'hsqldb:hsqldb:jar:1.8.0.7'