diff --git a/s-day01/src/com/inmind/jdk8_time04/DurationDemo14.java b/s-day01/src/com/inmind/jdk8_time04/DurationDemo14.java
new file mode 100644
index 0000000..58ec795
--- /dev/null
+++ b/s-day01/src/com/inmind/jdk8_time04/DurationDemo14.java
@@ -0,0 +1,25 @@
+package com.inmind.jdk8_time04;
+
+import java.time.Duration;
+import java.time.LocalDateTime;
+
+/*
+Duration类。它是用来表示两个时间对象的时间间隔
+可以用于计算两个时间对象相差的天数、小时数、分数、秒数、纳秒数；支持LocalTime、LocalDateTime、Instant等时间
+*/
+public class DurationDemo14 {
+    public static void main(String[] args) {
+        LocalDateTime start = LocalDateTime.of(2026, 10, 13, 11, 7, 30);
+        LocalDateTime end = LocalDateTime.of(2026, 10, 13, 11, 7, 31);
+        //计算2个时间段间隔
+        Duration duration = Duration.between(start, end);
+        //获取间隔信息
+        System.out.println(duration.toDays());
+        System.out.println(duration.toHours());
+        System.out.println(duration.toMinutes());
+        System.out.println(duration.toSeconds());
+        System.out.println(duration.toMillis());
+        System.out.println(duration.toNanos());
+
+    }
+}