[hardwired]

There may be a lot of ways to put something like this together. In general it is better to have only one JFrame and to use JDialogs for additional top–level containers.

Code:

class Frame1
    JTable table

    Frame1() {
        table.addMouselistener(listener);
        show table in frame
    }

    private MouseListener listener = new MouseAdapter() {
        public void mousePressed(MouseEvent e) {
            Point p = e.getPoint
            int row = table.rowAtPoint(p);
            int col = table.columnAtPoint(p);
            openDialog(row, col);
        }
    };

    private void openDialog(int row, int col) {
        JTable localTable = new JTable
        localTable.addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                if(e.getClickCount == 2) {
                    int row = localTable.getRowAtPoint(e.getPoint())
                    collect row data from localTable
                    set data in table
                }
            }
        ));
        populate table with data base data for row/col
        show table in JDialog/JFrame
    }
}