diff --git a/javaSE-day02/src/com/inmind/generic_interface05/Demo06.java b/javaSE-day02/src/com/inmind/generic_interface05/Demo06.java
new file mode 100644
index 0000000..8f0f765
--- /dev/null
+++ b/javaSE-day02/src/com/inmind/generic_interface05/Demo06.java
@@ -0,0 +1,10 @@
+package com.inmind.generic_interface05;
+
+public class Demo06 {
+    public static void main(String[] args) {
+        //创建实现类2对象
+        MyInterfaceImpl2<Integer> impl2 = new MyInterfaceImpl2<>();
+        impl2.method1(1);
+        Integer i = impl2.method2();
+    }
+}
diff --git a/javaSE-day02/src/com/inmind/generic_interface05/MyInterface.java b/javaSE-day02/src/com/inmind/generic_interface05/MyInterface.java
new file mode 100644
index 0000000..1d531dc
--- /dev/null
+++ b/javaSE-day02/src/com/inmind/generic_interface05/MyInterface.java
@@ -0,0 +1,25 @@
+package com.inmind.generic_interface05;
+/*
+    泛型接口:在接口中定义一个未知的类型
+    泛型接口的格式:
+    public interface 接口名<T> {
+
+    }
+
+    泛型接口的泛型类型何时确定???
+    1.在定义实现子类中直接确定接口的类型
+    2.在实现子类中不确定类型,在创建该实现子类对象时才确定
+ */
+public interface MyInterface<T> {
+
+    //泛型作为参数
+     void method1(T t);
+
+    //泛型作为返回值
+    T method2();
+
+    //泛型既作为参数，又作为返回值
+    T method3(T t);//是不是泛型方法？？？？？
+
+
+}
diff --git a/javaSE-day02/src/com/inmind/generic_interface05/MyInterfaceImpl1.java b/javaSE-day02/src/com/inmind/generic_interface05/MyInterfaceImpl1.java
new file mode 100644
index 0000000..b9a218a
--- /dev/null
+++ b/javaSE-day02/src/com/inmind/generic_interface05/MyInterfaceImpl1.java
@@ -0,0 +1,20 @@
+package com.inmind.generic_interface05;
+
+//1.在定义实现子类中直接确定接口的类型
+public class MyInterfaceImpl1 implements MyInterface<String>{
+
+    @Override
+    public void method1(String s) {
+
+    }
+
+    @Override
+    public String method2() {
+        return "";
+    }
+
+    @Override
+    public String method3(String s) {
+        return "";
+    }
+}
diff --git a/javaSE-day02/src/com/inmind/generic_interface05/MyInterfaceImpl2.java b/javaSE-day02/src/com/inmind/generic_interface05/MyInterfaceImpl2.java
new file mode 100644
index 0000000..80fe5fd
--- /dev/null
+++ b/javaSE-day02/src/com/inmind/generic_interface05/MyInterfaceImpl2.java
@@ -0,0 +1,19 @@
+package com.inmind.generic_interface05;
+
+//2.在实现子类中不确定类型,在创建该实现子类对象时才确定
+public  class MyInterfaceImpl2 <T> implements MyInterface<T> {
+    @Override
+    public void method1(T t) {
+
+    }
+
+    @Override
+    public T method2() {
+        return null;
+    }
+
+    @Override
+    public T method3(T t) {
+        return null;
+    }
+}