JTable listening for selected rows and columns by a keypress event

[jhon max]

   public class JTableWithMouseListenerextends extends JFrame {

    private JTable table;
    private JPanel lowerPanel;
    private JScrollPane scroll;

    public JTableWithMouseListener() {

        initializeInventory();
    }

    private void initializeInventory() {

        lowerPanel = new JPanel();
        lowerPanel.setLayout(new BorderLayout());

        final String[] columnNames = {"First", "Second", "Third", "Fourth"};
        final Object[][] data = new Object[100][columnNames.length];

        table = new JTable(data, columnNames);
        table.addMouseListener(new MyMouseAdapter());
        
        scroll = new JScrollPane(table);
        scroll.setBounds(0, 0, 1395, 400);

        lowerPanel.add(scroll);

        getContentPane().add(lowerPanel);

        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setTitle("Inventory Window");
        pack();
        setLocationRelativeTo(null);
        setVisible(true);
    }

    // class for implementing the mouse listener
    private class MyMouseAdapter extends MouseAdapter {

        public void mousePressed(MouseEvent e) {
            
            if (table.equals(e.getSource())) {

                int colIdx = table.columnAtPoint(e.getPoint());
                int rowIdx = table.rowAtPoint(e.getPoint());
                
                System.out.println("Row: " + rowIdx + " " + "Colulmn: " + colIdx);
            }
        }
    }
    
    public static void main(String[] args) {

        SwingUtilities.invokeLater(new Runnable() {

            public void run() {

                new JTableWithMouseListener();
            }
        });
    }
}
     

In this sample code you can see that I can only display the selected row and columns (cells) by clicking a cell.

My question is what action/event should I implement for displaying the selected cell by pressing the 4 directional arrows?

please I need help with this.. thank you very much

[Rob Spoor]

Add a ListSelectionListener to the table's selection model.