import java.awt.*; //the importing of required libraries
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.event.KeyListener;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import java.util.*;

public class UpdateEventMain extends JDialog
{

private JPanel contentPane; //declaring variables

private JLabel titleMain;
private JPanel pnlTop;

private JPanel pnlCenter;

private JPanel  pnlBottom;
private JButton btnUpdate;
private JButton btnExit;


public UpdateEventMain() {

super();  
initializeComponent();  
}  

private void initializeComponent() {

contentPane = (JPanel)this.getContentPane();

pnlTop = new JPanel(); //declaring JPanels
pnlCenter = new JPanel();
pnlBottom = new JPanel();

btnUpdate = new JButton();
btnExit = new JButton();

titleMain = new JLabel("UPDATE EVENTS"); //setting text, font and colour
titleMain.setFont(titleMain.getFont().deriveFont(Font.BOLD, 48));
titleMain.setForeground(Color.black);

contentPane.setLayout(new BorderLayout(5, 5));  //adding my JPanels to content pane using a border layout
contentPane.add(pnlTop, BorderLayout.NORTH);
contentPane.add(pnlCenter, BorderLayout.CENTER);
contentPane.add(pnlBottom, BorderLayout.SOUTH);
contentPane.setBackground(new Color(0, 0, 0));

pnlTop.setLayout(new FlowLayout());  //setting my JPanels with a flow layout
pnlTop.add(titleMain, 0);  //adding a variable

btnUpdate.setText("    UPDATE RECORDS    ");
btnUpdate.addActionListener(new ActionListener() { //adding an action listener to the button
public void actionPerformed(ActionEvent e)
{
btnUpdate_actionPerformed(); //calling up the buttons action event
}

});

btnExit.setText(" EXIT ");
btnExit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
btnExit_actionPerformed();
}

});

pnlBottom.setLayout(new FlowLayout(FlowLayout.CENTER, 6, 5));
pnlBottom.add(btnUpdate, 0);
pnlBottom.add(btnExit, 1);


setSize(800, 608);
setTitle("Update");
setResizable(false); //so users cant resize the JDialog
setVisible(true);
setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE); //action if dialog is closed

}

private void btnUpdate_actionPerformed()
{

}

private void btnExit_actionPerformed()
{
this.dispose(); //exit
}


public static void main(String[] args) {  
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new UpdateEventMain();  //run this class and make it visible
}
});
}
}

import java.util.Vector;
import javax.swing.*;

public class Table {

       public static void main(String[] arg) {
           // header for the constructor
           String[] header = {"Col1", "Col2", "Col3"};
           // put in a vector
           Vector<String> vHead = new Vector<String>(header.length);
           // fil the vector
           for(int i = 0; i < header.length; i++)
               vHead.add(header[i]);
           // an empty vector of vectors of objects
           Vector<Vector<Object>> vData = new Vector<Vector<Object>>(100,25);    
          
           // create JTable and display it
           JTable t = new JTable(vData, vHead);
           JFrame f = new JFrame("Test");
           f.add(new JScrollPane(t));
           f.setSize(200,100);
           f.setVisible(true);
           f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
          
           // to add a row:
           // create a vector of Object of header.length
           Vector<Object> row = new Vector<Object>(header.length);
           // fill it with String object
           for(int i = 0; i < header.length; i++) {
               String str = "Line1 " + i;
               row.add(str);
           }
           // addthis vector to our vector of rows
           vData.add(row);    
       }
}

import java.awt.*; //the importing of required libraries
import java.io.*;
import java.awt.event.KeyListener;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import javax.swing.table.*;
import javax.swing.event.*;

public class UpdateEventMain extends JDialog
{
            
        private JPanel contentPane; //declaring variables
        
        private JLabel titleMain;
         private JPanel pnlTop;
         
        private JPanel pnlCenter;
        
         private JPanel  pnlBottom;
         private JButton btnUpdate;
         private JButton btnExit;
        
        JTable table;
        Vector rows,columns;
        DefaultTableModel tabModel;
        JScrollPane scrollPane;

    
    public UpdateEventMain() {
    
        super();  
        initializeComponent();  
    }  
    
    private void initializeComponent() {

    contentPane = (JPanel)this.getContentPane();
        
    pnlTop = new JPanel(); //declaring JPanels
    pnlCenter = new JPanel();
    pnlBottom = new JPanel();
    
    btnUpdate = new JButton();
    btnExit = new JButton();
    
    titleMain = new JLabel("UPDATE EVENTS"); //setting text, font and colour
    titleMain.setFont(titleMain.getFont().deriveFont(Font.BOLD, 48));
    titleMain.setForeground(Color.black);
    
    contentPane.setLayout(new BorderLayout(5, 5));  //adding my JPanels to content pane using a border layout
    contentPane.add(pnlTop, BorderLayout.NORTH);
    contentPane.add(pnlCenter, BorderLayout.CENTER);
    contentPane.add(pnlBottom, BorderLayout.SOUTH);
    contentPane.setBackground(new Color(0, 0, 0));
    
    pnlTop.setLayout(new FlowLayout());  //setting my JPanels with a flow layout
    pnlTop.add(titleMain, 0);  //adding a variable
    
    rows= new Vector();
    columns= new Vector();
    String[] columnNames =
    {
    "Position",
    "First Name",
    "Last Name",
    "Event",
    "Time",
    };
    addColumns(columnNames);

    tabModel=new DefaultTableModel();
    tabModel.setDataVector(rows,columns);
    
    table = new JTable(tabModel);
    scrollPane= new JScrollPane(table);//ScrollPane
    
    table.setRowSelectionAllowed(false);
    
    //table.getModel().addTableModelListener(this);
    pnlCenter.add(scrollPane);

    
    btnUpdate.setText("    UPDATE RECORDS    ");
    btnUpdate.addActionListener(new ActionListener() { //adding an action listener to the button
        public void actionPerformed(ActionEvent e)
        {
            btnUpdate_actionPerformed(); //calling up the buttons action event
        }

    });

    btnExit.setText(" EXIT ");
    btnExit.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e)
        {
            btnExit_actionPerformed();
        }

    });
        
    pnlBottom.setLayout(new FlowLayout(FlowLayout.CENTER, 6, 5));
    pnlBottom.add(btnUpdate, 0);
    pnlBottom.add(btnExit, 1);
    
    
    setSize(800, 608);
    setTitle("Update");
    setResizable(false); //so users cant resize the JDialog
    setVisible(true);
    setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE); //action if dialog is closed

    }
    
    private void btnUpdate_actionPerformed()
    {
    
    }
    
    private void btnExit_actionPerformed()
    {
    this.dispose(); //exit
    }
    

    public void addColumns(String[] colName)//Table Columns
    {
    for(int i=0;i<colName.length;i++)
    columns.addElement((String) colName[i]);
    }
    
    public void addRow() //Add Row
    {
    Vector r=new Vector();
    r=createBlankElement();
    rows.addElement(r);
    table.addNotify();
    
    }
    
    public Vector createBlankElement()
    {
    Vector t = new Vector();
    t.addElement((String) " ");
    t.addElement((String) " ");
    t.addElement((String) " ");
    t.addElement((String) " ");
    t.addElement((String) " ");
    return t;
    }    
            
    public static void main(String[] args) {  
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            new UpdateEventMain();  //run this class and make it visible
        }
    });
}
}

    String[] columnNames =
    {
    "Position",
    "First Name",
    "Last Name",
    "Event",
    "Time",
    };
    addColumns(columnNames);

[code]
    String[] columnNames =
    {
    "Position",
    "First Name",
    "Last Name",
    "Event",
    "Time",
    };

    for(int i = 0; i < columnNames.length; i++)
       colums.add(columnNames[i];