diff --git a/javaSE-day01/src/com/inmind/calendar03/Demo09.java b/javaSE-day01/src/com/inmind/calendar03/Demo09.java
new file mode 100644
index 0000000..977ca18
--- /dev/null
+++ b/javaSE-day01/src/com/inmind/calendar03/Demo09.java
@@ -0,0 +1,31 @@
+package com.inmind.calendar03;
+
+import java.util.Calendar;
+
+/*
+11. Calendar里面的set方法
+public void set(int field, int value) ：将给定的日历字段设置为给定值。
+
+Date类操作时间必须传入毫秒值，太麻烦，日历类提供了直接操作年月日时分秒
+ */
+public class Demo09 {
+    public static void main(String[] args) {
+        Calendar calendar = Calendar.getInstance();//获取当前时间的日历对象
+        System.out.println(calendar.get(Calendar.YEAR));
+        System.out.println(calendar.get(Calendar.MONTH)+1);
+        System.out.println(calendar.get(Calendar.DAY_OF_MONTH));
+        showCalendar(calendar);
+        //想将时间修改为2022-2-22
+        calendar.set(Calendar.YEAR,2022);
+        calendar.set(Calendar.MONTH,1);
+        calendar.set(Calendar.DAY_OF_MONTH,22);
+        System.out.println(calendar);
+        //封装一个只看年月日的方法
+        showCalendar(calendar);
+
+    }
+
+    public static void showCalendar(Calendar calendar) {
+        System.out.println(calendar.get(Calendar.YEAR)+"年"+(calendar.get(Calendar.MONTH)+1)+"月"+calendar.get(Calendar.DAY_OF_MONTH)+"日");
+    }
+}
diff --git a/javaSE-day01/src/com/inmind/calendar03/Demo10.java b/javaSE-day01/src/com/inmind/calendar03/Demo10.java
new file mode 100644
index 0000000..1343acb
--- /dev/null
+++ b/javaSE-day01/src/com/inmind/calendar03/Demo10.java
@@ -0,0 +1,4 @@
+package com.inmind.calendar03;
+
+public class Demo10 {
+}