updating cell in JTable

hi,

i am trying to update a cell and i can do that. However when i update only 1 cell i have to click on some other cell for the value to be updated when i hit a button...otherwise it still stores the default value.....can any one explain why is this happening? and what should i do to get rid of this

[314 byte] By [ElishaWa] at [2007-11-27 9:41:15]