[Week1][입문편] 3강 코틀린에서 상속을 다루는 방법 (#5)

양승민/입문/src/lec10/java/JavaAnimal.java

@@ -0,0 +1,22 @@
+package lec10.java;
+
+public abstract class JavaAnimal {
+
+    protected final String species;
+    protected final int legCount;
+
+    public JavaAnimal(String species, int legCount) {
+        this.species = species;
+        this.legCount = legCount;
+    }
+
+    abstract public void move();
+
+    public String getSpecies() {
+        return species;
+    }
+
+    public int getLegCount() {
+        return legCount;
+    }
+}

양승민/입문/src/lec10/java/JavaCat.java

@@ -0,0 +1,12 @@
+package lec10.java;
+
+public class JavaCat extends JavaAnimal {
+    public JavaCat(String species, int legCount) {
+        super(species, 4);
+    }
+
+    @Override
+    public void move() {
+        System.out.println("꽁꽁 얼어붙은 한강 위에 고양이가 어쩌구");
+    }
+}

양승민/입문/src/lec10/java/JavaFlyable.java

@@ -0,0 +1,7 @@
+package lec10.java;
+
+public interface JavaFlyable {
+    default void act() {
+        System.out.println("파닥 파닥");
+    }
+}

양승민/입문/src/lec10/java/JavaPenguin.java

@@ -0,0 +1,27 @@
+package lec10.java;
+
+public class JavaPenguin extends JavaAnimal implements JavaSwimable, JavaFlyable{
+
+    private final int wingCount;
+
+    public JavaPenguin(String species, int legCount) {
+        super(species, 2);
+        this.wingCount = 2;
+    }
+
+    @Override
+    public void move() {
+        System.out.println("가자 펭귄");
+    }
+
+    @Override
+    public int getLegCount() {
+        return super.getLegCount() + this.wingCount;
+    }
+
+    @Override
+    public void act() {
+        JavaSwimable.super.act();
+        JavaFlyable.super.act();
+    }
+}

양승민/입문/src/lec10/java/JavaSwimable.java

@@ -0,0 +1,7 @@
+package lec10.java;
+
+public interface JavaSwimable {
+    default void act() {
+        System.out.println("어푸 어푸");
+    }
+}

양승민/입문/src/lec10/java/lec10Main.java

@@ -0,0 +1,4 @@
+package lec10.java;
+
+public class lec10Main {
+}

양승민/입문/src/lec10/kotlin/Animal.kt

@@ -0,0 +1,8 @@
+package lec10.kotlin
+
+abstract class Animal(
+    protected val species: String,
+    protected open val legCount: Int
+) {
+    abstract fun move()
+}

양승민/입문/src/lec10/kotlin/Flyable.kt

@@ -0,0 +1,7 @@
+package lec10.kotlin
+
+interface Flyable {
+    fun act(){
+        println("파닥 파닥")
+    }
+}

양승민/입문/src/lec10/kotlin/Penguin.kt

@@ -0,0 +1,19 @@
+package lec10.kotlin
+
+class Penguin(
+    species: String,
+) : Animal(species, 2), Swimable, Flyable {
+
+    private val wingCount = 2
+    override fun move() {
+        println("가자 펭귄")
+    }
+
+    override val legCount
+        get() = super.legCount + this.wingCount
+
+    override fun act() {
+        super<Swimable>.act()
+        super<Flyable>.act()
+    }
+}

양승민/입문/src/lec10/kotlin/Swimable.kt

@@ -0,0 +1,7 @@
+package lec10.kotlin
+
+interface Swimable {
+    fun act(){
+        println("어푸 어푸")
+    }
+}

양승민/입문/src/lec10/kotlin/lec10Main.kt

@@ -0,0 +1,5 @@
+package lec10.kotlin
+
+fun main() {
+
+}