diff --git a/day07/src/com/inmind/random02/Demo05.java b/day07/src/com/inmind/random02/Demo05.java
new file mode 100644
index 0000000..3207088
--- /dev/null
+++ b/day07/src/com/inmind/random02/Demo05.java
@@ -0,0 +1,17 @@
+package com.inmind.random02;
+
+import java.util.Random;
+
+public class Demo05 {
+    public static void main(String[] args) {
+        //1.创建Random对象
+        Random random = new Random();
+        //2.获取随机值
+        for (int i = 0; i < 20; i++) {
+//            int v = random.nextInt();//获取int取值范围的随机数，太大了
+//            int v = random.nextInt(10);//（java中是包头不包尾）获取0~9
+            int v = random.nextInt(3,8);//（java中是包头不包尾）获取3~7
+            System.out.println(v);
+        }
+    }
+}