java oop : interface - jdbc 와의 관계

JavaOOP/src/Java25.java

@@ -0,0 +1,16 @@
+import poly.Radio;
+import poly.RemoCon;
+import poly.TV;
+
+public class Java25 {
+    public static void main(String[] args) {
+        RemoCon r = new TV();
+        for (int i = 0; i < 10; i++) {
+            r.chUp();
+        }
+        for (int i = 0; i < 10; i++) {
+            r.chDown();
+        }
+        r.internet();
+    }
+}