How to pass selected rows from a table as request parameters on form submit?

I,m developing a web app(jsp) that extracts some data from a .doc file. Headings from an uploaded document is extracted and listed in a table as below.

Generated output on upload-screenshot

I have added a check-box for each row. Next what I want to do is save the check-box checked rows into an xml. I know how to write xml but how to do it only with the checked rows on form submit? My question summery is, How can I pass those checked rows from table on form submit as request parameters. Thanks in advance.