learning scala extractor object

package com.aura.scala.day01

import scala.util.Random

object extractorObject {
  def main(args: Array[String]): Unit = {
//    val customer1ID = CustomerID("Sukyoung")  // Sukyoung--23098234908
//    customer1ID match {
//      case CustomerID(name) => println(name)  // prints Sukyoung
//      case _ => println("Could not extract a CustomerID")
//    }

    val customer2ID = CustomerID("Nico")
    val CustomerID(name) = customer2ID
    println(name)
  }
}

object CustomerID {
  def apply(name: String) = s"$name--${Random.nextLong}"

  def unapply(customerID: String): Option[String] = {
    val stringArray: Array[String] = customerID.split("--")
    if (stringArray.tail.nonEmpty) Some(stringArray.head) else None
  }
}

result:

"D:Program FilesJavajdk1.8.0_201injava.exe" "-javaagent:D:Program FilesJetBrainsIntelliJ IDEA 2019.1.3libidea_rt.jar=8825:D:Program FilesJetBrainsIntelliJ IDEA 2019.1.3in" -Dfile.encoding=UTF-8 -classpath "D:Program FilesJavajdk1.8.0_201jrelibcharsets.jar;D:Program FilesJavajdk1.8.0_201jrelibdeploy.jar;D:Program FilesJavajdk1.8.0_201jrelibextaccess-bridge-64.jar;D:Program FilesJavajdk1.8.0_201jrelibextcldrdata.jar;D:Program FilesJavajdk1.8.0_201jrelibextdnsns.jar;D:Program FilesJavajdk1.8.0_201jrelibextjaccess.jar;D:Program FilesJavajdk1.8.0_201jrelibextjfxrt.jar;D:Program FilesJavajdk1.8.0_201jrelibextlocaledata.jar;D:Program FilesJavajdk1.8.0_201jrelibext
ashorn.jar;D:Program FilesJavajdk1.8.0_201jrelibextsunec.jar;D:Program FilesJavajdk1.8.0_201jrelibextsunjce_provider.jar;D:Program FilesJavajdk1.8.0_201jrelibextsunmscapi.jar;D:Program FilesJavajdk1.8.0_201jrelibextsunpkcs11.jar;D:Program FilesJavajdk1.8.0_201jrelibextzipfs.jar;D:Program FilesJavajdk1.8.0_201jrelibjavaws.jar;D:Program FilesJavajdk1.8.0_201jrelibjce.jar;D:Program FilesJavajdk1.8.0_201jrelibjfr.jar;D:Program FilesJavajdk1.8.0_201jrelibjfxswt.jar;D:Program FilesJavajdk1.8.0_201jrelibjsse.jar;D:Program FilesJavajdk1.8.0_201jrelibmanagement-agent.jar;D:Program FilesJavajdk1.8.0_201jrelibplugin.jar;D:Program FilesJavajdk1.8.0_201jrelib
esources.jar;D:Program FilesJavajdk1.8.0_201jrelib
t.jar;C:UsersadminIdeaProjectsScalaDayoutproductionScalaDay;C:Program Files (x86)scalalibscala-actors-2.11.0.jar;C:Program Files (x86)scalalibscala-actors-migration_2.11-1.1.0.jar;C:Program Files (x86)scalalibscala-library.jar;C:Program Files (x86)scalalibscala-parser-combinators_2.11-1.0.4.jar;C:Program Files (x86)scalalibscala-reflect.jar;C:Program Files (x86)scalalibscala-swing_2.11-1.0.2.jar;C:Program Files (x86)scalalibscala-xml_2.11-1.0.4.jar" com.aura.scala.day01.extractorObject
Nico