<dependency>
  <groupId>com.oracle.database.xml</groupId>
  <artifactId>xdb</artifactId>
  <version>18.15.0.0</version>
</dependency>

implementation 'com.oracle.database.xml:xdb:18.15.0.0'

implementation("com.oracle.database.xml:xdb:18.15.0.0")

libraryDependencies += "com.oracle.database.xml" % "xdb" % "18.15.0.0"

@Grapes(
  @Grab(group='com.oracle.database.xml', module='xdb', version='18.15.0.0')
)

<dependency org="com.oracle.database.xml" name="xdb" rev="18.15.0.0" />

[com.oracle.database.xml/xdb "18.15.0.0"]

'com.oracle.database.xml:xdb:jar:18.15.0.0'