change

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBStatement.java

@@ -170,7 +170,6 @@ public class TSDBStatement implements Statement {
     }
 
     public boolean execute(String sql) throws SQLException {
-        System.out.println(Thread.currentThread().getName() + " before execute =====> isclosed: " + isClosed);
         if (isClosed) {
             throw new SQLException("Invalid method call on a closed statement.");
         }
@@ -186,8 +185,6 @@ public class TSDBStatement implements Statement {
             this.connector.freeResultSet(pSql);
             res = false;
         }
-        System.out.println(Thread.currentThread().getName() + " after execute =====> isclosed: " + isClosed);
-
         return res;
     }