MariaDB Driver (mariadb-java-client-1.4.6.jar) got an issue when inserting chinese string

Hi Team,
I got an issue when insert Chinese String into table. all Chinese string will be changed to ? after inserting.
Ex: Create a table UTF8Test by following command:
CREATE TABLE UTF8Test (Driver VARCHAR(256),UTF8colunm VARCHAR(256) NULL DEFAULT NULL COLLATE 'utf8_general_ci') COLLATE='latin1_swedish_ci'
Then insert Chinese String into this table using MariaDB driver (mariadb-java-client-1.4.6.jar).
Insert into UTF8Test values ('driver type', '中文不工作中文不工作');
The String '中文不工作中文不工作' will be changed to '?????????' after inserting.
There is no problem when i use MYSQL driver (mysql-connector-java-5.0.8-bin.jar).
I also used "useUnicode=true&characterEncoding=UTF-8" on conection string, but cannot fix this issue.

Attachment is my example code and my database config file. Could you help to fix this issue.

One more thing, I take a check on MariaDB Connector/ODBC driver and got the same issue.

Thanks and Best Regards,
Thinh Pham