creating custom query with properties

hellow everybody  [Exclamation]  [Exclamation]  [Exclamation]



i start to work with nb few days ago and there is something i cant do:



in SWING app i have query "select s from shipping s"



i want to add binded property from text field named "weight" (something like "select * from shipping where weight = $weight" in PHP...).



after all i want bing single result to text field.





tnx!