java setvisible(false) from mainframe

Question

I have class Main (jFrame) and class Edit (jFrame) I want to double click cell from table and show Edit (jFrame) so when i double click new cell i want to close old Edit (jFrame) before show new Edit (jFrame).Thanks

jTable1.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent me) {
    JTable table =(JTable) me.getSource();
    Point p = me.getPoint();
    int row = table.rowAtPoint(p);
    if (me.getClickCount() == 2) {
        Edit n = new Edit();
        player.stop();

        n.setVisible(false);//It's not work.

        n.setVisible(true);
        Object ed = jTable1.getValueAt(jTable1.getSelectedRow(), 2);
        Edit.jTextArea1.setText((String) ed);
        Edit.x = jTable1.getSelectedRow();
    }
}

    });