<dependency>
  <groupId>jini</groupId>
  <artifactId>jini-ext</artifactId>
  <version>2.1</version>
</dependency>

implementation 'jini:jini-ext:2.1'

implementation("jini:jini-ext:2.1")

libraryDependencies += "jini" % "jini-ext" % "2.1"

@Grapes(
  @Grab(group='jini', module='jini-ext', version='2.1')
)

<dependency org="jini" name="jini-ext" rev="2.1" />

[jini/jini-ext "2.1"]

'jini:jini-ext:jar:2.1'