diff --git a/day02/src/com/inmind/yunsuan02/Demo10.java b/day02/src/com/inmind/yunsuan02/Demo10.java
new file mode 100644
index 0000000..0e2f659
--- /dev/null
+++ b/day02/src/com/inmind/yunsuan02/Demo10.java
@@ -0,0 +1,16 @@
+package com.inmind.yunsuan02;
+/**
+ 比较运算符：== > <  >=  <= !=.
+ 注意：>= 只要满足一个条件即可（满足大于或者等于），所有的比较运算符得到的结果一定是boolean
+ */
+public class Demo10 {
+    public static void main(String[] args) {
+        System.out.println(3==4);//false
+        System.out.println(3>4);//false
+        System.out.println(3<4);//true
+        System.out.println(3!=4);//true
+        System.out.println(3>=4);//false
+        System.out.println(3<=4);//true
+        System.out.println(4<=4);//true
+    }
+}