java application

Hi team rosenet,
I ve used the ideas you gave and created an application.I need to do a modification to this code:

/*
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* and open the template in the editor.
*/
package register;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

/**
*
* @author Reji Samuel
*/
public class Combo extends JFrame {

private JComboBox clist;
JLabel lblname, lblcol, lblevents, lblsubmit;
JTextField txtid;
JButton button, button1, button2, button3;
JPanel panel;

public Combo() {
super("OnSpot_Registration");
panel = new JPanel(new GridLayout(6, 3));
lblname = new JLabel("Participant");
lblname.setBounds(50, 50, 200, 20);
txtid = new JTextField(25);
lblcol = new JLabel("College");
lblcol.setBounds(50, 100, 100, 20);
clist = new JComboBox();
clist.setBounds(200, 100, 100, 20);
clist.setMaximumRowCount(10);
button2 = new JButton("Next_entry");
button = new JButton("Submit");
button1 = new JButton("Report");
button3 = new JButton("Exit");
panel.add(lblname);
panel.add(txtid);
panel.add(lblcol);
panel.add(clist);
final JCheckBox chk1 = new JCheckBox("Debugging", false);
final JCheckBox chk2 = new JCheckBox("Paper Presentation", false);
final JCheckBox chk3 = new JCheckBox("Quiz", false);
final JCheckBox chk4 = new JCheckBox("Web Designing", false);
panel.add(chk1);
panel.add(chk2);
panel.add(chk3);
panel.add(chk4);
panel.add(button2);
panel.add(button);
panel.add(button1);
panel.add(button3);
setSize(700, 300);
setVisible(true);
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection c = DriverManager.getConnection("jdbc:odbc:college");
Statement st = c.createStatement();
ResultSet rs = st.executeQuery("select college from college");
while (rs.next()) {
clist.addItem(rs.getString("college"));
}
} catch (Exception e) {
e.printStackTrace();
}
button.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
int count = 0;
String v1 = txtid.getText();
String v5 = clist.getSelectedItem().toString();
String v7 = "";
String v9 = "";
String v11 = "";
String v13 = "";
if (chk1.isSelected()) {
v7 = "Debugging";
JOptionPane.showMessageDialog(null, "Chosen Debugging");
} else {
v7 = "";
}
if (chk2.isSelected()) {
v9 = "Paper Presentation";
JOptionPane.showMessageDialog(null, "Chosen Paper Presentation");
} else {
v9 = "";
}
if (chk3.isSelected()) {
v11 = "Quiz";
JOptionPane.showMessageDialog(null, "Chosen Quiz");
} else {
v11 = "";
}
if (chk4.isSelected()) {
v13 = "Web Designing";
JOptionPane.showMessageDialog(null, "Chosen Web Designing");
} else {
v13 = "";
}
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:access");
Statement st = con.createStatement();
ResultSet rs = st.executeQuery("select * from user where organization='" + v5 + "'");
while (rs.next()) {
count++;
}
if (count >= 2) {
JOptionPane.showMessageDialog(null, "The maximum members permitted for this organization have been already registered");
} else {
int i = st.executeUpdate("insert into user(name,organization,event_1,event_2,event_3,event_4) values('" + v1 + "','" + v5 + "','" + v7 + "','" + v9 + "','" + v11 + "','" + v13 + "')");
JOptionPane.showMessageDialog(null, "You are successfully registered");
}
} catch (Exception ex) {
System.out.println(ex);
}
}
});
button2.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent ae) {
if (ae.getActionCommand() == "Next_entry") {
txtid.setText("");
}
}
});
button3.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent be) {
if (be.getActionCommand() == "Exit") {
System.exit(0);
}
}
});
add(panel);
}

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
Combo test = new Combo();
test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
modifications...
* Assign a unique id to all sucessfull registered users.
*wen i press report button,I should get a list of name and college in ms word doc of all those selectd debugging,quiz,paper presentation.
*validate the user interface,All should check atleast one event else a message box should display directing us to check and select atleast one.
* when ever i add a new college to the access table,The JCombobox content should update without recompilation...
Please help