JTable cell value doesn't change with user input

Question

I'm making a program that uses a custom table model (extends AbstractTableModel). The problem is when I type a value in one of the table cells, then press enter (or click outside the cell), the value goes back to what it was originally. So for example, a cell has "oldvalue", I type in "newvalue", press enter, and now the cell still reads "oldvalue". I figured the renderer would automatically update the cell by calling MyTableModel.setValueAt (...), but maybe I need a listener to do this? let me know. thanks

Answer 1

alright, well basically I'm making a database manager
and thought it would be easier to extend
AbstractTableModel and then do all the queries inside
the methods instead of listening for events. Second
thing, I put a debug statement and setValueAt never
gets called when you type in a new cell value. How
does it update the cell then is my question?It's your TableModel bug but a much better advice would be that you should use
DefaultTableModel instead of extending AbstractTableModel. The DefaultTableModel
is usually more than enough for an ordinary JTable application.
The simplest and standard way of handling DB data from JTable is updating
vectors for DefaultTableModel data with your new DB data set. You don't need
to worry about low-level event firing, cell editor control etc. if you use
DefaultTableModel. See API documentation of DefaultTableModel closely.