diff --git a/src/MiNotes-master/app/src/main/java/net/micode/notes/tool/BackupUtils.java b/src/MiNotes-master/app/src/main/java/net/micode/notes/tool/BackupUtils.java
index e743b8a..e383ec3 100644
--- a/src/MiNotes-master/app/src/main/java/net/micode/notes/tool/BackupUtils.java
+++ b/src/MiNotes-master/app/src/main/java/net/micode/notes/tool/BackupUtils.java
@@ -39,7 +39,7 @@ import java.io.PrintStream;
 public class BackupUtils {
     private static final String TAG = "BackupUtils";    
     // Singleton stuff
-    private static BackupUtils sInstance;   //类里面为什么可以定义自身类的对象？
+    private static BackupUtils sInstance;   
  
     public static synchronized BackupUtils getInstance(Context context) {
     //ynchronized 关键字，代表这个方法加锁,相当于不管哪一个线程（例如线程A）