From cc5f5909366f86adbbfa0449a0f7a69f4bba9327 Mon Sep 17 00:00:00 2001
From: toychip <dlawnsgud427@naver.com>
Date: Tue, 13 Feb 2024 21:57:43 +0900
Subject: [PATCH] =?UTF-8?q?[Week3][Chap10]=20=EB=8B=A4=ED=98=95=EC=84=B1?=
 =?UTF-8?q?=EA=B3=BC=20=EB=A9=94=EC=84=9C=EB=93=9C=20=EC=98=A4=EB=B2=84?=
 =?UTF-8?q?=EB=9D=BC=EC=9D=B4=EB=94=A9=20(#26)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/week3/poly/overriding/Child.java"    | 12 +++++++++
 .../poly/overriding/OverridingMain.java"      | 25 +++++++++++++++++++
 .../java/week3/poly/overriding/Parent.java"   |  9 +++++++
 3 files changed, 46 insertions(+)
 create mode 100644 "\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/Child.java"
 create mode 100644 "\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/OverridingMain.java"
 create mode 100644 "\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/Parent.java"

diff --git "a/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/Child.java" "b/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/Child.java"
new file mode 100644
index 0000000..f92f019
--- /dev/null
+++ "b/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/Child.java"
@@ -0,0 +1,12 @@
+package week3.poly.overriding;
+
+public class Child extends Parent {
+
+    public String value = "child";
+
+    @Override
+    public void method() {
+        System.out.println("Child.method");
+//        super.method();
+    }
+}
diff --git "a/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/OverridingMain.java" "b/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/OverridingMain.java"
new file mode 100644
index 0000000..4a27f2d
--- /dev/null
+++ "b/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/OverridingMain.java"
@@ -0,0 +1,25 @@
+package week3.poly.overriding;
+
+public class OverridingMain {
+
+    public static void main(String[] args) {
+        //자식 변수가 자식 인스턴스 참조
+        Child child = new Child();
+        System.out.println("Child -> Child");
+        System.out.println("value = " + child.value);
+        child.method();
+
+        System.out.println("------------");
+        Parent parent = new Parent();
+        System.out.println("Parent -> Parent");
+        System.out.println("parent.value = " + parent.value);
+        parent.method();
+
+        System.out.println("------------");
+        // 부모 변수가 자식 인스턴스 참조(다형적 참조)
+        Parent poly = new Child();
+        System.out.println("Parent -> Child 참조");
+        System.out.println("value = " + poly.value); // parent, 변수는 오버라이딩이되지 않음
+        poly.method();  // 메서드 오버라이딩, Child의 메서드 호출, 오버라이딩된 메서드가 항상 우선권을 가진다.
+    }
+}
diff --git "a/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/Parent.java" "b/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/Parent.java"
new file mode 100644
index 0000000..238ea94
--- /dev/null
+++ "b/\354\236\204\354\244\200\355\230\225/java-basic/src/main/java/week3/poly/overriding/Parent.java"
@@ -0,0 +1,9 @@
+package week3.poly.overriding;
+
+public class Parent {
+    public String value = "parent";
+
+    public void method() {
+        System.out.println("Parent.method");
+    }
+}