Java EE (Java Enterprise Edition) General Discussion

Hi everybody,
I have created a small web application in which i am using bar-code reader.
Home page includes four frames.On left frame1 i added search text field and a single search button.When i click on search button,it retrieve records(ID,Part Number,Description) and display on left side lower(down) frame2.It all showing in a table.And on right side frame3 includes four fields ID,Part Number,Description and UPC Code.So when i am going to click on frame2's row,it target to frame3 and add all data of each field to frame3's text field except UPC code.
Now i have problem in..when i am going to scan by barcode reader.It's updating data without clicking Update button .I can't see upc code.
How can i do that.I want to see all those fields and when i will click on update button,it should be update in database.

Thank you...