Sum a column of a JTable

I;m having some trouble with this one...How could I sum all the values from a column of a JTable and make it appear on a JTextField. The JTable is going to be editable, so I need to recalculate the value of the JTextField each time the data on the table changes....any ideas?
[289 byte] By [gangistera] at [2007-11-27 9:04:28]
# 1
try implementing the TableModelListener interface
lem@phila at 2007-7-12 21:37:42 > top of Java-index,Desktop,Core GUI APIs...