java fireTableDataChanged() not working

Question

I have build a Java GUI which will add contact data to an ArrayList. The JTable will the update from the ArrayList as well. However after adding new item my JTable doesn't get update. I have used table.repaint() and table.fireTableDataChanged(). Here is the code. I don't know what is wrong. Try to add new contact and see the change. It is nothing.

public class TableDemo extends JPanel implements ActionListener {

private JLabel name, contact;
private JTextField nameField, contactField;
private static JButton addButton, ok;

JTable table;
JFrame myFrame;
MyTableModel myModel;

public TableDemo() {
    super(new GridLayout(1, 0));

    myModel = new MyTableModel();

    myModel.fireTableDataChanged();
    table = new JTable(myModel);

    table.setFillsViewportHeight(true);

    table.setPreferredScrollableViewportSize(new Dimension(500, 70));
    table.setFillsViewportHeight(true);

    // Create the scroll pane and add the table to it.
    JScrollPane scrollPane = new JScrollPane(table);

    // Add the scroll pane to this panel.
    add(scrollPane);
}

class MyTableModel extends AbstractTableModel {
    private String[] columnNames = { "Full Name", "Contact Number" };

    ArrayList dataList = new ArrayList();

    public MyTableModel() {

    }

    public MyTableModel(Contact c) {
        dataList.add(c);
    }

    public int getColumnCount() {
        return columnNames.length;
    }

    public int getRowCount() {
        return dataList.size();
    }

    public String getColumnName(int col) {
        return columnNames[col];
    }

    public Object getValueAt(int row, int col) {
        Contact widget = (Contact) dataList.get(row);

        switch (col) {
        case 0:
            return widget.getFullName();
        case 1:
            return widget.getPhoneNumber();
        default:
            return null;

        }
    }

    public void setValueAt(Contact c, int row, int column) {
        Contact co = (Contact) dataList.get(row);
        switch (column) {

        }

    }

    public Class getColumnClass(int c) {
        return getValueAt(0, c).getClass();
    }

    public boolean isCellEditable(int row, int col) {

        return false;
    }

    public void addContact(Contact c) {
        dataList.add(c);
        fireTableDataChanged();

    }
}

public void setValueAt(Object value, int row, int col) {
    // dataList = value;
    myModel.fireTableCellUpdated(row, col);
}

private static void createAndShowGUI() {
    // Create and set up the window.
    JFrame frame = new JFrame("TableDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // Create and set up the content pane.
    TableDemo newContentPane = new TableDemo();
    newContentPane.setOpaque(true); // content panes must be opaque
    frame.setContentPane(newContentPane);
    addButton = new JButton("Add");
    JPanel myPanel = new JPanel();
    myPanel.add(addButton);

    addButton.addActionListener(new TableDemo());

    frame.setLayout(new GridLayout(2, 1));
    frame.setResizable(false);
    frame.setSize(500, 500);
    frame.add(myPanel);
    // Display the window.
    frame.pack();
    frame.setVisible(true);
}

public static void main(String[] args) {
    // Schedule a job for the event-dispatching thread:
    // creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            createAndShowGUI();
        }
    });
}

public void actionPerformed(ActionEvent e) {
    // TODO Auto-generated method stub
    newFrame();

}

public void newFrame() {
    myFrame = new JFrame();
    JPanel myPanel = new JPanel();
    name = new JLabel("Full Name");
    nameField = new JTextField(10);
    contact = new JLabel("Contact Number");
    contactField = new JTextField(10);

    ok = new JButton("OK");

    ok.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            myModel.addContact(new Contact(nameField.getText(),
                    contactField.getText()));
            myFrame.dispose();
        }
    });

    myPanel.add(name);
    myPanel.add(nameField);
    myPanel.add(contact);
    myPanel.add(contactField);
    myPanel.add(ok);

    myFrame.add(myPanel);

    myFrame.setVisible(true);
    myFrame.setSize(250, 250);
}
}


public class Contact {
String fullName, phoneNumber;

public Contact(String fullName, String phoneNumber)
{
    this.fullName = fullName;
    this.phoneNumber = phoneNumber;
}

public String getFullName() {
    return fullName;
}

public void setFullName(String fullName) {
    this.fullName = fullName;
}

>public String getPhoneNumber() {
    return phoneNumber;
}

public void setPhoneNumber(String phoneNumber) {
    this.phoneNumber = phoneNumber;
}   
}

java fireTableDataChanged() not working

Answers (1)

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