diff --git a/javaSE-day08/src/com/inmind/filefilter03/Demo15.java b/javaSE-day08/src/com/inmind/filefilter03/Demo15.java
new file mode 100644
index 0000000..8ead275
--- /dev/null
+++ b/javaSE-day08/src/com/inmind/filefilter03/Demo15.java
@@ -0,0 +1,42 @@
+package com.inmind.filefilter03;
+
+import java.io.File;
+import java.io.FileFilter;
+
+/*
+使用lambda编写文件过滤器的实现
+ */
+public class Demo15 {
+    public static void main(String[] args) {
+        //创建父目录的File对象
+        File file = new File("D:\\io_test");
+        getFiles(file);
+    }
+
+    private static void getFiles(File file) {
+        if (file.exists() && file.isFile()) {
+            return;
+        }
+        //只需要获取.txt文件或者文件夹
+       /* File[] files = file.listFiles(new FileFilter() {
+            @Override
+            public boolean accept(File f) {
+                return (f.isFile() && f.getName().endsWith(".txt"))||f.isDirectory();
+            }
+        });*/
+
+        /*File[] files = file.listFiles((File f)->{
+            return (f.isFile() && f.getName().endsWith(".txt"))||f.isDirectory();
+        });*/
+
+        File[] files = file.listFiles(f-> (f.isFile() && f.getName().endsWith(".txt"))||f.isDirectory());
+
+        for (File f : files) {
+            if (f.isFile()) {
+                System.out.println(f.getName());
+            } else {
+                getFiles(f);
+            }
+        }
+    }
+}