diff --git a/day10/src/com/inmind/interface_extends07/Demo07.java b/day10/src/com/inmind/interface_extends07/Demo07.java
new file mode 100644
index 0000000..4f71ed1
--- /dev/null
+++ b/day10/src/com/inmind/interface_extends07/Demo07.java
@@ -0,0 +1,21 @@
+package com.inmind.interface_extends07;
+/*
+类与类的关系：单继承的，一个类永远都只能有一个直接父类
+类与接口的关系：多实现
+接口与接口的关系：接口是多继承的，接口可以有很多个直接父类
+
+
+注意事项：
+1.如果是继承，子接口可以继承所有父接口的抽象方法的，子接口的实现类必须实现所有的抽象方法
+2.如果继承的父接口们中有同名的抽象方法，子类接口只会继承一个抽象方法，子接口的实现类也只需要实现一次该同名抽象方法。
+3.接口的静态方法不能通过对象调用的
+4.父接口的静态方法不能通过子类接口直接访问调用的
+5.静态方法属于哪个接口，就应该由哪个接口名直接调用
+ */
+public class Demo07 {
+    public static void main(String[] args) {
+        MyInterfaceZi.methodS3();
+        MyInterfaceFu1.methodS1();
+        MyInterfaceFu2.methodS2();
+    }
+}
diff --git a/day10/src/com/inmind/interface_extends07/MyInterfaceFu1.java b/day10/src/com/inmind/interface_extends07/MyInterfaceFu1.java
new file mode 100644
index 0000000..48d2fad
--- /dev/null
+++ b/day10/src/com/inmind/interface_extends07/MyInterfaceFu1.java
@@ -0,0 +1,7 @@
+package com.inmind.interface_extends07;
+
+public interface MyInterfaceFu1 {
+    void methodFu1();
+    void method();
+    static void methodS1(){};
+}
diff --git a/day10/src/com/inmind/interface_extends07/MyInterfaceFu2.java b/day10/src/com/inmind/interface_extends07/MyInterfaceFu2.java
new file mode 100644
index 0000000..ec423ef
--- /dev/null
+++ b/day10/src/com/inmind/interface_extends07/MyInterfaceFu2.java
@@ -0,0 +1,7 @@
+package com.inmind.interface_extends07;
+
+public interface MyInterfaceFu2 {
+    void methodFu2();
+    void method();
+    static void methodS2(){};
+}
diff --git a/day10/src/com/inmind/interface_extends07/MyInterfaceZi.java b/day10/src/com/inmind/interface_extends07/MyInterfaceZi.java
new file mode 100644
index 0000000..8eb6e0f
--- /dev/null
+++ b/day10/src/com/inmind/interface_extends07/MyInterfaceZi.java
@@ -0,0 +1,7 @@
+package com.inmind.interface_extends07;
+
+public interface MyInterfaceZi extends MyInterfaceFu1,MyInterfaceFu2{
+    void methodZi();
+    void method();
+    static void methodS3(){};
+}
diff --git a/day10/src/com/inmind/interface_extends07/MyInterfaceZiImpl.java b/day10/src/com/inmind/interface_extends07/MyInterfaceZiImpl.java
new file mode 100644
index 0000000..c4ae4b2
--- /dev/null
+++ b/day10/src/com/inmind/interface_extends07/MyInterfaceZiImpl.java
@@ -0,0 +1,23 @@
+package com.inmind.interface_extends07;
+
+public class MyInterfaceZiImpl implements MyInterfaceZi{
+    @Override
+    public void methodZi() {
+
+    }
+
+    @Override
+    public void method() {
+
+    }
+
+    @Override
+    public void methodFu1() {
+
+    }
+
+    @Override
+    public void methodFu2() {
+
+    }
+}