Writing Query in Java UDF

Hi Experts,

I need help in writing query java UDF.

I receive Plant parameter as input to the UDF :

I want use this inbound parameter in my query, but I don't know how to write this :

1. Query = "SELECT * FROM TABLE WHERE F_VEHICLE_PRODUCTION_PLANT = ' :Plant ' " ;

Or

2. Query = "SELECT * FROM TABLE WHERE F_VEHICLE_PRODUCTION_PLANT'" +Plant +"'";

resultSet = accessor.execute(Query);  

Thanks for your help.