AWT-EventQueue-0 Exception when openning JFrame

Question

I have two class:

public class RecordTableGUI2 extends JFrame implements ActionListener {

    private JButton addButton;
    JTable table;
    RecordTableModel2 model2;

    public RecordTableGUI2() {

        model2 = new RecordTableModel2();
        table = new JTable(model2);
        ...
        add(buttonPanel(), BorderLayout.SOUTH);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(700, 550);
        setLocation(300, 80);
        setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == addButton) {
            this.setVisible(false);
            new AddRecord();
        }
    }
}

My AddRecord Class:

public class AddRecord extends javax.swing.JFrame implements ActionListener {

    private JButton showGui2Button;

    public AddRecord() {
        initComponents();
        showGui2Button.addActionListener(this);
        setLocation(300, 100);
        setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == showGui2Button) {
            this.setVisible(false);
            new RecordTableGUI2();
        }
    }
}

My RecordTableModel2 Class:

public class RecordTableModel2 extends DefaultTableModel {

    static Vector data = new Vector();
    static Vector column = new Vector();
    Connection con;
    Statement statement;
    ResultSet result;
    String dbUrl = "jdbc:mysql://localhost/mydb";
    String query = "Select * from mytable";

    public RecordTableModel2() {
        super(data, column);
        try {
            con = DriverManager.getConnection(dbUrl, "root", "2323");
            statement = con.createStatement();
            result = statement.executeQuery(query);

            int c = result.getMetaData().getColumnCount();
            for (int i = 1; i <= c; i++) {
                column.add(result.getMetaData().getColumnName(i));
                System.out.println(result.getMetaData().getColumnName(i));
            }

            while (result.next()) {
                Vector eachRow = new Vector(c);
                for (int i = 1; i <= c; i++) {
                    eachRow.add(result.getString(i));
                    System.out.println(result.getString(i));
                }
                data.add(eachRow);
            }           
        } catch (SQLException sqle) {
            sqle.printStackTrace();
        } finally {
            try {
                if (con != null) {
                    con.close();
                }
                if (statement != null) {
                    statement.close();
                }
            } catch (SQLException sqlee) {
                sqlee.printStackTrace();
            }
        }
    }
}

When i click to showGui2Button , Then this exception occur

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 2 >= 2
at java.util.Vector.elementAt(Vector.java:470)
at javax.swing.table.DefaultTableModel.getValueAt(DefaultTableModel.java:650)
at javax.swing.JTable.getValueAt(JTable.java:2720)
at javax.swing.JTable.prepareRenderer(JTable.java:5718)
at javax.swing.plaf.synth.SynthTableUI.paintCell(SynthTableUI.java:684)
at javax.swing.plaf.synth.SynthTableUI.paintCells(SynthTableUI.java:581)
at javax.swing.plaf.synth.SynthTableUI.paint(SynthTableUI.java:365)
at javax.swing.plaf.synth.SynthTableUI.update(SynthTableUI.java:276)
at javax.swing.JComponent.paintComponent(JComponent.java:778)
at javax.swing.JComponent.paint(JComponent.java:1054)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JViewport.paint(JViewport.java:731)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:585)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5228)
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1482)
at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1413)
at javax.swing.RepaintManager.paint(RepaintManager.java:1206)
at javax.swing.JComponent.paint(JComponent.java:1040)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:39)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:78)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:115)
at java.awt.Container.paint(Container.java:1967)
at java.awt.Window.paint(Window.java:3877)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:781)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:728)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:677)
at javax.swing.RepaintManager.access$700(RepaintManager.java:59)
at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1621)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:721)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:691)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

The problem is in the code you're not showing us - provide an `SSCCE` — Reimeus, Aug 25 '13 at 21:28
Paste the **complete** stack trace. And show us the code of the method of yours that appears first in the stack trace. — JB Nizet, Aug 25 '13 at 21:29
I think problem is for using of `initComponents();` method that is `IDE` generated codes — Sajad, Aug 25 '13 at 21:30
OK. So the exception is caused by a table model. Show us the code creating and populating this table model. — JB Nizet, Aug 25 '13 at 21:35
Wild guess: your table model returns a size bigger than its actual size. Check if you implemented properly `getRowCount` or `getColumnCount` — Guillaume Polet, Aug 25 '13 at 21:38
@GuillaumePolet I add table model class, I use `DefaultTableModel` — Sajad, Aug 25 '13 at 21:39
-1, This is the 5th or 6th (I"ve lost count) question on this topic. The OP still posts code related to the database which he has been told is of no use to us because we don't have access to the database. The OP still refuses to post a SSSCE. To OP has been told there is no reason to extend the DefaultTableModel top populate it with data and has been given a link to working code from my blog. Yet the OP is still wasting peoples time. — camickr, Aug 25 '13 at 22:32
@camickr I remember that you told me if i want to add more methods, Like `add` or `edit` or... , I should extend from DefaultTableModel . And now you say that there is no reason to extend the DefaultTableModel . Why? — Sajad, Aug 26 '13 at 16:45
I said you don't need to extend the DefaultTableModel to load data into the model. I also said the DefaultTableModel supports methods like add/remove. — camickr, Aug 26 '13 at 18:00
Nice, So what is your mean about `don't need to extend the DefaultTableModel to load data into the model` ? So how load data into model without `DefaultTableModel` ? — Sajad, Aug 26 '13 at 18:52
I can load data into Vectors and then put in `DefaultTableModel` constructor, For example. — Sajad, Aug 26 '13 at 18:57

score 3 · Accepted Answer · answered Aug 25 '13 at 21:52

3

All the code used to initialize the table model shouldn't be part of its constructor. Don't create a class extending DefaultTableModel, and don't use static variables for the data and columns: you don't want all the instances of your model to share a unique data vecstor and a unique columns vector.

Move all this code to a simple method which, once the data and columns names are ready, creates the model:

private TableModel createTableModel() {
    Vector data = new Vector();
    Vector columns = new Vector();

    // populate data and columns using JDBC. Use only local variables

   return new DefaultTableModel(data, columns);
}

answered Aug 25 '13 at 21:52

JB Nizet

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+1, lets hope the OP actually listens to this advice this time. He has been given this suggestion in several postings on this topic in the past couple of weeks. – camickr Aug 25 '13 at 22:34
@camickr: indeed he has. – Hovercraft Full Of Eels Aug 26 '13 at 00:08
Well, Is your mean that i should create your method in my `RecordTableGUI2` class and remove the `RecordTableModel2` class ? – Sajad Aug 26 '13 at 16:49
Yes. Drop the class RecordTableModel2 completely. – JB Nizet Aug 26 '13 at 16:51
So you say that my problem is in my table model, not in my `initComponents();` , Correct? – Sajad Aug 26 '13 at 18:55
I said what I said. I have no idea about what your initComponents() method does. It might also have problems. But the problems I see from what you posted are described in my answer. – JB Nizet Aug 26 '13 at 20:39

AWT-EventQueue-0 Exception when openning JFrame

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