two questions about jTable.

Hi,
i have two questions about jTable.

Question 1 :
i have a boolean column (etat) in table projet in database, can i show this column in jTable? cause i do for all other columns, but not for this column it shows me some carractors and numbers,!!

Question 2

Also in table projet i have two columns, ( namepdf, filepdf ) can i show in some lines in jtable the pdf file as link to save on desktop , i can do it on JButton but not i jTable,! i do search on google but nothing

please help,
Thanks a lot