<dependency>
  <groupId>net.sf.rubycollect4j</groupId>
  <artifactId>rubycollect4j</artifactId>
  <version>1.9.0</version>
</dependency>

implementation 'net.sf.rubycollect4j:rubycollect4j:1.9.0'

implementation("net.sf.rubycollect4j:rubycollect4j:1.9.0")

libraryDependencies += "net.sf.rubycollect4j" % "rubycollect4j" % "1.9.0"

@Grapes(
  @Grab(group='net.sf.rubycollect4j', module='rubycollect4j', version='1.9.0')
)

<dependency org="net.sf.rubycollect4j" name="rubycollect4j" rev="1.9.0" />

[net.sf.rubycollect4j/rubycollect4j "1.9.0"]

'net.sf.rubycollect4j:rubycollect4j:jar:1.9.0'