Queue/Array into JTable

Question

Hi, I am reading some data from a database and I have got it stored locally inside a queue. What i want to do is read in the queue (already got a mehtod for this) but then add each object in the queue, into a row in my JTable. also I want to be able to delete a row of a jtable when i am finished with it. any help very much apprecaited. all i have got so far is declaring the JTable and jscrollpane etc. i sint too crash hot on swing so you might have to make it obvious. thanks.

Answer 1

Right, I seem to have got myself into a mess with this. i dont think i'm too far off though. if i get this bit then i should have cracked it. I am getting a null pointer exception as i try to enter my first string into the TableModel. PS Its a bit of a hashed together attempt so any tips of how to improve the class generally, greatly appreciated.
import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;
import java.awt.event.*;
public class ProtocolGUI extends JPanel implements ActionListener
          private JPanel menuPanel;
          private JMenuBar menuBar;
        private JMenu fileMenu;
        private JMenu helpMenu;
          private JMenuItem startMon;
         private JMenuItem exitItem;
        private JMenuItem about;
        private JTabbedPane tabbedPane;
          private JPanel graphicsPanel;
          private JPanel textPanel;
        private JTable pclTable;
     public ProtocolGUI()
        super(new BorderLayout());
        menuBar = new JMenuBar();
        fileMenu = new JMenu("File");
        helpMenu = new JMenu("Help");
        startMon = new JMenuItem("Start");
         exitItem = new JMenuItem("Exit");
        about = new JMenu("About");
        menuPanel= new JPanel();
        menuPanel.setLayout(new BorderLayout());
        this.add(menuPanel, BorderLayout.NORTH);
        exitItem.addActionListener(this);
        fileMenu.add(startMon);
        fileMenu.add(exitItem);
        helpMenu.add(about);
        menuBar.add(fileMenu);
        menuBar.add(helpMenu);
        menuPanel.add(menuBar, BorderLayout.NORTH);
          ///////////end of menu///////////////
        tabbedPane = new JTabbedPane();
          ImageIcon graphIcon = createImageIcon("images/graphtab.gif");
          ImageIcon textIcon = createImageIcon("images/texttab.gif");
        graphIcon = new ImageIcon("images/graphtab.gif");
        textIcon = new ImageIcon("images/texttab.gif");
        graphicsPanel = new JPanel();
        textPanel = new JPanel();
          tabbedPane.addTab("Graphical", graphIcon, graphicsPanel,
                          "Swaps to graphical output");
        tabbedPane.addTab("Text", textIcon, textPanel,
                          "Swaps to text output");
        /*TableModel dataModel = new AbstractTableModel()
          public int getColumnCount()
                 return 6;
          public int getRowCount()
                 return 20;
          public Object getValueAt(int row, int col)
                 return new Integer(row*col);
          //pclTable = new JTable(dataModel);
        MessageSet ms2 = new MessageSet();
          textPanel.add(new JScrollPane(createTable(ms2.getArray())));
        //Add the tabbed pane to the outer panel.
          add(tabbedPane, BorderLayout.CENTER);
        setPreferredSize(new Dimension(500, 500));
        //Uncomment the following line to use scrolling tabs.
        //tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
    // Creates a JTable and returns it
     private JTable createTable(Message[] theArray)
          // Define empty data for model creation
          String[][] cellData = new String[0][6];
          String[] colNames = { "ID", "Sent To", "Sent From", "Command", "Data Ref", "Monitored" };
          // Create the table model
          DefaultTableModel tableModel = new DefaultTableModel(cellData, colNames);
          // Create some records and add them to the model
          String[] record = new String[6];
          for (int row=0; row<=theArray.length; row++)
            record[0] = Integer.toString(theArray[row].getID());
            record[1] = theArray[row].getToSection_ID();
               record[2] = theArray[row].getFromSection_ID();
               record[3] = Integer.toString(theArray[row].getType_ID());
               record[4] = theArray[row].getDataRef();
               record[5] = Integer.toString(theArray[row].getMonitored());
               tableModel.addRow(record);
          // Create the table and return it
          return new JTable(tableModel);
    /** Returns an ImageIcon, or null if the path was invalid. */
    protected static ImageIcon createImageIcon(String path)
        java.net.URL imgURL = ProtocolGUI.class.getResource(path);
        if (imgURL != null)
            return new ImageIcon(imgURL);
          else
            System.err.println("Couldn't find file: " + path);
            return null;
    public void actionPerformed(ActionEvent e)
        Object source = e.getSource();
        if (source == exitItem)
            System.exit(0);
     private static void createAndShowGUI()
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);
        //Create and set up the window.
        JFrame frame = new JFrame("Protocol GUI");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Create and set up the content pane.
        JComponent newContentPane = new ProtocolGUI();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.getContentPane().add(new ProtocolGUI(),
                                 BorderLayout.CENTER);
        //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();
}