Rt

<dependency>
    <groupId>__java</groupId>
    <artifactId>rt</artifactId>
    <version>1.8</version>
</dependency>

compile group: '__java', name: 'rt', version: '1.8'

compile '__java:rt:1.8'

libraryDependencies += "__java" % "rt" % "1.8"

<dependency org="__java" name="rt" rev="1.8"/>

@Grapes(
            @Grab(group='__java', module='rt', version='1.8')
        )

[__java/rt "1.8"]

'__java:rt:jar:1.8'