I might be wrong, but I'd say that the interest in switch expressions and pattern matching from the Java community most likely comes from Scala (a JVM language) rather than Rust. Here's an example from the Scala docs:

  def showNotification(notification: Notification): String = {
    notification match {
      case Email(email, title, _) =>
        s"You got an email from $email with title: $title"
      case SMS(number, message) =>
        s"You got an SMS from $number! Message: $message"
      case VoiceRecording(name, link) =>
        s"you received a Voice Recording from $name! Click the link to hear it: $link"
    }
}