diff --git a/client/src/main/java/com/vesoft/nebula/client/storage/StorageClient.java b/client/src/main/java/com/vesoft/nebula/client/storage/StorageClient.java
index 90bdd80f1..b6cf73fd9 100644
--- a/client/src/main/java/com/vesoft/nebula/client/storage/StorageClient.java
+++ b/client/src/main/java/com/vesoft/nebula/client/storage/StorageClient.java
@@ -25,7 +25,6 @@
 import com.vesoft.nebula.storage.ScanEdgeRequest;
 import com.vesoft.nebula.storage.ScanVertexRequest;
 import com.vesoft.nebula.storage.VertexProp;
-
 import java.io.Serializable;
 import java.io.UnsupportedEncodingException;
 import java.util.ArrayList;
@@ -35,7 +34,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;