🚀 go-pugleaf

>I'm having trouble setting up an event listener for my JTable.
...
>For some reason, tableChanged never gets called when the table values are
>edited.

When you create you're own TableModel, as you did in the following block...

tableModel = new AbstractTableModel()
{
    public int    getColumnCount()    { return 4; }
    ...
};

... you should make sure that somewhere a TableModelEvent is thrown,
otherwise your Frame1 will never catch it, and the method tableChanged will
never be invoked. AbstractTabelModel provides usefull convenience methods
for throwing a TableModelEvent, and because you extended that class, you can
do the following:

tableModel = new AbstractTableModel()
{
    public int    getColumnCount()    { return 4; }
    ...
    public void setValueAt(Object value, int row, int column) {
        ...; // Put your code here if you already overwrote this method.
        fireTableCellUpdated(row, column);
    }
};


Every time the table values are edited, the method setValueAt is invoked, so
now that a TableModelEvent is created and thrown in that method, listeners
will wake up...