diff --git a/docs/examples/java/src/main/java/com/taos/example/highvolume/FastWriteExample.java b/docs/examples/java/src/main/java/com/taos/example/highvolume/FastWriteExample.java
index 718d875893ce64c8857ab904b01694570db9246a..e8af1a68ea60d213ad700446dfb6b953be6f1d34 100644
--- a/docs/examples/java/src/main/java/com/taos/example/highvolume/FastWriteExample.java
+++ b/docs/examples/java/src/main/java/com/taos/example/highvolume/FastWriteExample.java
@@ -8,7 +8,6 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.LinkedBlockingDeque;
 
 /**
  * Prepare target database.