[Week3][Chap12] OCP(Open-Closed Principle) 원칙 (#27)

김아린/java-basic/src/poly/car1/CarMain1.java

@@ -13,5 +13,10 @@ public static void main(String[] args) {
         Model3Car model3Car = new Model3Car();
         driver.setCar(model3Car);
         driver.drive();
+
+        // 차량 변경(model3 -> newCar)
+        NewCar newCar = new NewCar();
+        driver.setCar(newCar);
+        driver.drive();
     }
 }

김아린/java-basic/src/poly/car1/NewCar.java

@@ -0,0 +1,18 @@
+package poly.car1;
+
+public class NewCar implements Car{
+    @Override
+    public void startEngine() {
+        System.out.println("NewCar.startEngine");
+    }
+
+    @Override
+    public void offEngine() {
+        System.out.println("NewCar.offEngine");
+    }
+
+    @Override
+    public void pressAccelerator() {
+        System.out.println("NewCar.pressAccelerator");
+    }
+}