I am making AGAIN another program that retrieves the inputted data/values of fields from the database I created. but this time, my inputted value will be coming from the JtextField I created. I wonder what's wrong in here bec when I'm running it the output is always null.

in this program i will convert the inputted value of my JTextField into int. here it is:

public class ButtonHandler implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
if(e.getSource() == extendB)
{
    ExtensionForm extend = new ExtensionForm();
    extend.setVisible(true);
    }
else if(e.getSource()== searchB)            
{
//get text from the textField 
String guest = guestIDTF.getText();
//parse the string to integer for retrieving of data
int id = Integer.parseInt(guest);
GuestsInfo guestInfo = new GuestsInfo(id);
Room roomInfo = new Room(id);
String labels[] = {guestInfo.getFirstName()+" "+guestInfo.getLastName(),""+roomInfo.getRoomNo(),roomInfo.getRoomType(),guestInfo.getTime(),"11:00"}; for(int z = 0; z<labels.length; z++) { labelDisplay[z].setText(labels[z]); }

in my second class it retrieves the inputted values of fields from the database I created here's the code: import java.sql.*;

public class Room {

private String roomType;
private int  guestID, roomNo;

private Connection con;
private PreparedStatement statement;

public Room(){
    try {
         Class.forName("com.mysql.jdbc.Driver");
         con = DriverManager.getConnection(
                      "jdbc:mysql://localhost:3306/3moronsdb","root","");           
    } 
    catch (Exception e) {
         e.printStackTrace();
    }
}
public Room(int guestsID)
{
    this();
    try{
        statement = con.prepareStatement("SELECT * FROM guest WHERE guestID=?");
        statement.setInt(1, guestID);
        ResultSet rs = statement.executeQuery();
        while(rs.next()){
            this.guestID = rs.getInt(1);
            this.roomType = rs.getString(2);
            this.roomNo = rs.getInt(3);
        }
    }catch(Exception e){
        System.out.print(e);
    }
}
//Constructor for setting rate
public Room(String roomType, int roomNo)
{
    this();
    try
    {   
        statement = con.prepareStatement("Insert into room(roomType, roomNo) values(?,?)");
            statement.setString(1, roomType);
            statement.setInt(2, roomNo);
            statement.executeUpdate();
    }
    catch(Exception e)
    {
        e.printStackTrace();        
        return;
    }
}
//getting roomType
public String getRoomType(){
    return roomType;
}
//getting roomNo
public int getRoomNo(){
    return roomNo; 
}
//getting guestID
public int getGuestId(){
    return guestID;
}

}

i already insert some values in my 3moronsdb which are ( 1, Classic , 103). here's my TEST main class:

public class TestMain {
    public static void main(String [] a){

        GuestsInfo guest = new GuestsInfo(1); //note that this instantiation is the other class which i just
 ask the other day.. (http://stackoverflow.com/questions/12762835/retrieving-values-from-database-in-java)   
        Room rum = new Room(1);
    System.out.print(rum.getRoomType()+"  "+ guest.getFirstName());
}
}

when i'm running it it only gives me null output for the Room class but i am getting the output of the GuestsInfo class which is 'Ericka'. Can you help me guys? I know I ask this kind of problem yesterday but i really don't know what's wrong in here now..