diff --git a/src/net/micode/notes/data/Notes.java b/src/net/micode/notes/data/Notes.java
index 7e2be8b..e3d658b 100644
--- a/src/net/micode/notes/data/Notes.java
+++ b/src/net/micode/notes/data/Notes.java
@@ -17,12 +17,10 @@
 package net.micode.notes.data;
 
 import android.net.Uri;
-// Notes 类中定义了很多常量，这些常量大多是int型和string型
-public class Notes {
+public class Notes {// Notes 类中定义了很多常量，这些常量大多是int型和string型
     public static final String AUTHORITY = "micode_notes";
     public static final String TAG = "Notes";
-    //定义三个常量，对NoteColumns.TYPE的值进行设置时会用到
-    public static final int TYPE_NOTE     = 0;
+    public static final int TYPE_NOTE     = 0;//定义三个常量，对NoteColumns.TYPE的值进行设置时会用到
     public static final int TYPE_FOLDER   = 1;
     public static final int TYPE_SYSTEM   = 2;
 
@@ -33,8 +31,7 @@ public class Notes {
      * {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records
      */
 
-    //定义特殊文件夹的ID值，用于标识根文件夹、临时文件夹、通话记录文件夹和回收站文件夹
-    public static final int ID_ROOT_FOLDER = 0;
+    public static final int ID_ROOT_FOLDER = 0;   //定义特殊文件夹的ID值，用于标识根文件夹、临时文件夹、通话记录文件夹和回收站文件夹
     public static final int ID_TEMPARAY_FOLDER = -1;
     public static final int ID_CALL_RECORD_FOLDER = -2;
     public static final int ID_TRASH_FOLER = -3;
@@ -65,8 +62,7 @@ public class Notes {
      */
     public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");//定义查找数据的指针
 
-    // 定义NoteColumns的常量,用于后面创建数据库的表头
-    public interface NoteColumns {
+    public interface NoteColumns {// 定义NoteColumns的常量,用于后面创建数据库的表头
         /**
          * The unique ID for a row
          * <P> Type: INTEGER (long) </P>
@@ -172,8 +168,7 @@ public class Notes {
         public static final String VERSION = "version";
     }//常量定义便签的属性
 
-    // 定义DataColumns的常量,用于后面创建数据库的表头
-    public interface DataColumns {
+    public interface DataColumns {// 定义DataColumns的常量,用于后面创建数据库的表头
         /**
          * The unique ID for a row
          * <P> Type: INTEGER (long) </P>