Inheritance, Polymorphism, Abstract example

app/src/main/java/com/hasankaya/oopexample/Animal.kt

@@ -0,0 +1,7 @@
+package com.hasankaya.oopexample
+
+open class Animal {
+    open fun breathe(){
+        println("Breathing!")
+    }
+}

app/src/main/java/com/hasankaya/oopexample/Dog.kt

@@ -0,0 +1,12 @@
+package com.hasankaya.oopexample
+
+class Dog: Animal() {
+    fun test(){
+        super.breathe()
+        //miras aldığımız sınıftaki fonksiyonu çalıştırır.
+    }
+
+    override fun breathe(){
+        println("dog breathe")
+    }
+}

app/src/main/java/com/hasankaya/oopexample/HouseDecor.kt

@@ -0,0 +1,9 @@
+package com.hasankaya.oopexample
+//interface içerisinde property yazmak
+interface HouseDecor {
+    //%100 abstract
+    // kotlin -> no initialize for properties
+    //java -> must initialize
+
+    var roomName: String
+}

app/src/main/java/com/hasankaya/oopexample/Instrument.kt

@@ -0,0 +1,8 @@
+package com.hasankaya.oopexample
+//interface içerisinde fonksiyon yazmak
+interface Instrument {
+    //java -> no body
+    //kotlin -> body olabilir de olmayabilir de
+    fun info()
+
+}

app/src/main/java/com/hasankaya/oopexample/MainActivity.kt

@@ -12,8 +12,24 @@ class MainActivity : AppCompatActivity() {
         println("(1): \n"+shopOne.shopName + "\n" +shopOne.shopCode.toString() + "\n"+ shopOne.mallId.toString())
       shopOne.shopCode=2000602
         println("(2): \n"+shopOne.shopName + "\n" +shopOne.shopCode.toString() + "\n"+ shopOne.mallId.toString())
-
 
+        //static polymorphism
+        var matcalculate = Matcalculates()
+        println(matcalculate.sum())
+        println(matcalculate.sum(1,2))
+        println(matcalculate.sum(1,2,3))
+
+        //dynamic polymorphism
+        val animal= Animal()
+        animal.breathe()
+
+        val fredy = Dog()
+        fredy.test()//miras aldığımız sınıftaki methodu çalıştıran
+        fredy.breathe()//overwrite ettiğimizi çalıştıran
+
+        //interface
+        var myPiano =Piano()
+        print(myPiano.roomName)
 
     }
 }

app/src/main/java/com/hasankaya/oopexample/MallShops.kt

@@ -0,0 +1,8 @@
+package com.hasankaya.oopexample
+
+class MallShops(shopName: String, shopCode: Int, mallId: Int) : Shops(shopName, shopCode, mallId) {
+
+    fun floorType(){
+        println("floor type")
+    }
+}

app/src/main/java/com/hasankaya/oopexample/Matcalculates.kt

@@ -0,0 +1,7 @@
+package com.hasankaya.oopexample
+
+class Matcalculates {
+    fun sum(): Int {return 0}
+    fun sum(x:Int, y:Int):Int{return x+y}
+    fun sum(x:Int, y:Int, z:Int): Int{return x+y+z}
+}

app/src/main/java/com/hasankaya/oopexample/Piano.kt

@@ -0,0 +1,11 @@
+package com.hasankaya.oopexample
+
+class Piano: HouseDecor, Instrument {
+    override var roomName: String
+        get() = "kitchen"
+        set(value) {}
+
+    override fun info() {
+        TODO("Not yet implemented")
+    }
+}

app/src/main/java/com/hasankaya/oopexample/Shops.kt

@@ -1,15 +1,28 @@
 package com.hasankaya.oopexample
-
-class Shops(shopName: String, shopCode: Int, mallId:Int ) {
+//biz sınıfların başına open yazmazsak, default olarak final tipinde tanımlanır ve başka yerde kullandırmaz.
+//eğer open yazarsak inheritance alabiliriz .
+open class Shops(shopName: String, shopCode: Int, mallId:Int ) {
 //encapsulation örneği
     var shopName: String?= shopName
-        private set //değişime izin vermiyoruz bu şekilde.
-        get //verinin okunmasına izin veriyoruz.
+        set
+        get
     var shopCode: Int?= shopCode
         set
         get
     var mallId: Int?=mallId
-        get
-        private set
+        get//verinin okunmasına izin veriyoruz.(encapsulation)
+        private set//değişime izin vermiyoruz bu şekilde.(encapsulation)
+
+    private val softwareType: String="Enterprice"
+
+    fun returnSoftwareType(password: String):String{
+        if(password=="hasan"){
+            return softwareType;
+        }else{
+            return "wrong pass!"
+        }
+    }
+
+
 
 }