diff --git a/day11/src/com/inmind/noname_innercalss04/Animal.java b/day11/src/com/inmind/noname_innercalss04/Animal.java
new file mode 100644
index 0000000..cfdc964
--- /dev/null
+++ b/day11/src/com/inmind/noname_innercalss04/Animal.java
@@ -0,0 +1,6 @@
+package com.inmind.noname_innercalss04;
+
+//抽象类
+public abstract class Animal {
+    public abstract void eat();
+}
diff --git a/day11/src/com/inmind/noname_innercalss04/Demo07.java b/day11/src/com/inmind/noname_innercalss04/Demo07.java
index 930f918..ac74f2f 100644
--- a/day11/src/com/inmind/noname_innercalss04/Demo07.java
+++ b/day11/src/com/inmind/noname_innercalss04/Demo07.java
@@ -38,8 +38,39 @@ public class Demo07 {
         };
         impl2.method();
 
-        //4.抽象父类的匿名内部类写法
+        //4.抽象父类的匿名内部类写法（多态）
+        Animal animal = new Animal(){
+            @Override
+            public void eat() {
+                System.out.println("狗吃骨头");
+            }
+        };
+        animal.eat();
+
+        Animal animal1 = new Animal() {
+            @Override
+            public void eat() {
+                System.out.println("猫吃鱼");
+            }
+        };
+        animal1.eat();
 
         //5.普通父类的匿名内部类写法
+        Person p1 = new Person(){
+            @Override
+            public void drink() {
+                System.out.println("印度人喜欢喝恒河水");
+            }
+        };
+        p1.drink();
+
+        Person p2 = new Person(){
+            @Override
+            public void drink() {
+                System.out.println("中国人喝白开水");
+            }
+        };
+        p2.drink();
+
     }
 }
diff --git a/day11/src/com/inmind/noname_innercalss04/Person.java b/day11/src/com/inmind/noname_innercalss04/Person.java
new file mode 100644
index 0000000..efda68f
--- /dev/null
+++ b/day11/src/com/inmind/noname_innercalss04/Person.java
@@ -0,0 +1,8 @@
+package com.inmind.noname_innercalss04;
+
+public class Person {
+
+    public void drink(){
+        System.out.println("人喝水");
+    }
+}