day10-对象的向上向下转型代码实现

day10/src/com/inmind/object_cast10/Cat.java

@@ -0,0 +1,11 @@
+package com.inmind.object_cast10;
+
+public class Cat extends Animal{
+    @Override
+    public void eat() {
+        System.out.println("猫吃鱼");
+    }
+    public void catchMouse(){
+        System.out.println("猫抓老鼠");
+    }
+}