diff --git a/s-day03/src/com/inmind/colletions04/Demo14.java b/s-day03/src/com/inmind/colletions04/Demo14.java
index 2c6b9ef..a0af93f 100644
--- a/s-day03/src/com/inmind/colletions04/Demo14.java
+++ b/s-day03/src/com/inmind/colletions04/Demo14.java
@@ -31,5 +31,25 @@ public class Demo14 {
         });
         System.out.println(lists);
         //请大家创建一个保存学生对象的集合，并按学生的年龄升序排序，要求使用比较器
+        ArrayList<Student> students = new ArrayList<>();
+        Collections.addAll(students
+                , new Student("张三1", 19)
+                , new Student("张三2", 20)
+                , new Student("张三3", 18)
+                , new Student("张三4", 21)
+        );
+        System.out.println(students);
+        //希望集合的学生按年龄排序（升序，降序）
+        Collections.sort(students);
+        System.out.println(students);
+        //使用比较器对学生，按年龄升序排序（比较器）
+        Collections.sort(students, new Comparator<Student>() {
+            @Override
+            public int compare(Student o1, Student o2) {
+                return o1.age-o2.age;
+            }
+        });
+
+        System.out.println(students);
     }
 }