重新提交

src/com/chinasofti/dao/ActivityDAO.java

@@ -0,0 +1,12 @@
+package com.chinasofti.dao;
+
+import com.chinasofti.model.Activity;
+import java.util.List;
+
+public interface ActivityDAO {
+    List<Activity> selectAll();
+    Activity selectById(Long id);
+    int insert(Activity activity);
+    int update(Activity activity);
+    int deleteById(Long id);
+}