<dependency>
  <groupId>com.formdev</groupId>
  <artifactId>flatlaf</artifactId>
  <version>2.1</version>
</dependency>

implementation 'com.formdev:flatlaf:2.1'

implementation("com.formdev:flatlaf:2.1")

libraryDependencies += "com.formdev" % "flatlaf" % "2.1"

@Grapes(
  @Grab(group='com.formdev', module='flatlaf', version='2.1')
)

<dependency org="com.formdev" name="flatlaf" rev="2.1" />

[com.formdev/flatlaf "2.1"]

'com.formdev:flatlaf:jar:2.1'