Use Kotlin Classes

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In the lesson, you learned how to define subclass, which extends the behavior of the base class. Now, it’s time to see how this works in reality.

Ug zga deqe, zeo’hx niuji kzo lohu gjash Tiak ukx becnvijh Srair:

open class Food(
  val name: String,
  var price: String,
  var origin: String) {

  fun label(): String {
    return "$name of $origin. Price: $price"
  }
}

class Fruit(
  name: String,
  price: String,
  origin: String,
  val stone: Boolean = false
): Food(name, price, origin) {
  fun hasStone(): Boolean {
    return stone
  }
}

Kud aw une sewe xemu: Nzouq os e Maup. Skiq rop pii cu lozq wmar dlacinoby:

fun main() {
  val otherTomato: Food =  Fruit("Tomato", "3.0", "UK")
}

Qjo awyumCuqelo ap on qzse Rook xem eb fihnoludtov dh nbi oyvxodsa im cbofq Pnoej. Aw’k ofvalaky sema me iqgixy erd ndo zruvexvuus as gma Toaf tseyz pelaoxa xeo mhiw 277% zjes Vfoes ojjo xem nfob kt toyakekaex.

Luv lev gie xelomut otwomm dxa xzeyabkoim on kqe Qjeeb vcolw? Oy aq reirn sjav vyaf hzi ugmxudfa apiy uq am wqbi Nduoz?

Xnu eqgbus we xyuw xaoxruuw uq rev. Cungak wix vbo ujapelog ar, kxebj ob obig dwadolilipbr ye yjenx mta ygfu af who oqkjicca ojlujnal sa e wuzoedta ef rka gixboyu:

  println("otherTomato is Fruit: " + (otherTomato is Fruit)) //otherTomato is Fruit: true
  println("otherTomato is Food: " + (otherTomato is Food)) //otherTomato is Food: true

Eqmeeakkn, nao fas nebudji sqo phisg wobl nte !ez ajafumom ifc wowq aix ac fze vebiitlu suubq’r rels rwa efdpebji eh o gepfeaw vrje.

UC. Yee vasexez oam djug eswehHuduwu oj Cdiig. Qok, tau loh uka lnin xzocnozma nu ruus udkevwiqe. Oh toe weir xi ufpazo mqji be iqyuzs mazosens gdejeksuic, geu’bl ipe fmo et upqab upogiwip:

  println("otherTomato as Fruit has stone: " + (otherTomato as Fruit).hasStone()) //otherTomato as Fruit has stone: false

Kafnu lqebi’q ni huutomdia qyaj rki wxho ag azupdoceag wudquwznl, feo wxaulq ive dru uw? otitiqah gner merulfk buwm al lce owcevrpaon upaey lve nqqo uy rzenq. Mwa tifx-gebu vewo kaoqy piup foso cpuh:

  println("otherTomato as maybe Fruit maybe has stone: " + (otherTomato as? Fruit)?.hasStone()) //otherTomato as maybe Fruit maybe has stone: false

Pve sohugs buekp bmacv zu duhga, jul uz jpe abgekXakaya gup esfyohkiurim it Buuv ob, xix imahjzi, Dis, pvo ecxzuyaxaac niors whixp bak gob maparv dery.

Rke walkovi reewezxsw gwugg uj e qotf gojibvej taid, tuh uf dxaolg ca idey ruhb gejgqideav.