Mysql-what type is used to obtain the value of the form check box?

The field type set in mysql is the checkbox corresponding to the setjsp page. what attributes should be used in the persistence object? PrivateStringxx? PrivateList & lt; String & gt; xx? Or what ?? I tried both of the above... the first one can only get one value, and the second one reports an error... Mysqlj2eecheckbox form ssh

Set the field type in mysql
On the jsp page, check box checkbox is used. what attributes should be used in the persistence object?
Private String xx?
Private List <String> xx?
Or what ?? I tried both of the above... the first one can only get one value, and the second one reports an error...