diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java
index d85dc9b0047bae3571fb3b04da53441b5c31d0d5..86d179eae4950edae7fda5b1b979e1f61ea521f2 100644
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java
@@ -34,8 +34,6 @@ import java.sql.Struct;
 import java.util.*;
 import java.util.concurrent.Executor;
 
-import static com.sun.deploy.cache.Cache.exists;
-
 public class TSDBConnection implements Connection {
 
     private TSDBJNIConnector connector = null;