diff --git a/w2/DataCleaner.java b/w2/DataCleaner.java
new file mode 100644
index 0000000..abef194
--- /dev/null
+++ b/w2/DataCleaner.java
@@ -0,0 +1,2 @@
+public class 异常数据拦截与清洗流水线  {
+}