diff --git a/day09/src/com/inmind/extends_vars02/Demo02.java b/day09/src/com/inmind/extends_vars02/Demo02.java
new file mode 100644
index 0000000..567c999
--- /dev/null
+++ b/day09/src/com/inmind/extends_vars02/Demo02.java
@@ -0,0 +1,18 @@
+package com.inmind.extends_vars02;
+/*
+.继承中成员变量的访问特点
+1.直接通过对象去访问，看对象创建语句=左边的内容，是谁就优先使用谁的成员变量，如果没有则向上找
+2.间接通过对象调用成员方法去访问，调用时，方法属于谁，就优先使用谁的成员变量，如果没有则向上找
+ */
+public class Demo02 {
+    public static void main(String[] args) {
+        //直接创建子类对象
+        Zi zi = new Zi();
+        System.out.println(zi.num);
+        System.out.println(zi.numZi);
+        System.out.println(zi.numFu);
+        //调用子类的方法来访问属性变量
+        zi.methoZi();
+        zi.methodFu();
+    }
+}
diff --git a/day09/src/com/inmind/extends_vars02/Fu.java b/day09/src/com/inmind/extends_vars02/Fu.java
new file mode 100644
index 0000000..3050765
--- /dev/null
+++ b/day09/src/com/inmind/extends_vars02/Fu.java
@@ -0,0 +1,12 @@
+package com.inmind.extends_vars02;
+
+public class Fu {
+    int num = 10;
+    int numFu = 20;
+
+    public void methodFu(){
+        System.out.println(num);
+        //System.out.println(numZi);//注意：继承中属性和行为只能向上找
+        System.out.println(numFu);
+    }
+}
diff --git a/day09/src/com/inmind/extends_vars02/Zi.java b/day09/src/com/inmind/extends_vars02/Zi.java
new file mode 100644
index 0000000..cac12ed
--- /dev/null
+++ b/day09/src/com/inmind/extends_vars02/Zi.java
@@ -0,0 +1,12 @@
+package com.inmind.extends_vars02;
+
+public class Zi extends Fu{
+    int num = 30;
+    int numZi = 40;
+
+    public void methoZi(){
+        System.out.println(num);
+        System.out.println(numZi);
+        System.out.println(numFu);
+    }
+}