Panel Swapping! Help needed!!!

[hamstrd]

Hi all, i am working on an assignment where i have to design an automatic check in system for an airport. I am using the swing library, as well as using actionlisteners.

My issue is, that i try replacing panels, to move from screen to screen. It worked so far with replacing one panel( Panel A for panel B), but now i've added a new panel (C) i want it to go from panel B to C. However, what happens is that goes from panel A straight to C.

Here is the code:

package terminal2;
 
import javax.swing.*;
import javax.imageio.*;
import java.awt.image.*;
import java.io.*;
import java.awt.event.*;
import java.awt.*;
 
 
class terminal implements ActionListener
{
    private JFrame mainF=new JFrame("Welcome to Cairo Int Airport TERMINAL 2");
    private JPanel welcome=new JPanel();
    private JPanel ticket=new JPanel();
    private JPanel seats=new JPanel();
    private JPanel clkPanel=new JPanel();
 
    //Panels for headers.
    JPanel head=new JPanel();
    JPanel Header=new JPanel();
 
    private Clock clk=new Clock();
 
 
    //Layouts
 
    FlowLayout flow=new FlowLayout();
    GridLayout g=new GridLayout(3,1);
    BorderLayout main=new BorderLayout();
 
 
 
    public terminal()
    {
 
         //Fonts
        Font header=new Font("Arial",Font.BOLD,32);
        Font textF=new Font("Arial",Font.ITALIC,18);
        Font labels=new Font("Arial",Font.BOLD,14);
 
        //Layouts
 
        flow.setAlignment(FlowLayout.CENTER);
 
 
        clkPanel.setLayout(flow);
        clkPanel.add(clk);
        clkPanel.setBackground(Color.RED);
 
 
        //Frame
        mainF.setVisible(true);
        mainF.setSize(1200,800);
        mainF.setLayout(new FlowLayout());
        mainF.setBackground(Color.ORANGE);
        mainF.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
        //Dimensions
 
        Dimension field=new Dimension(75,25);
        Dimension but=new Dimension(100,50);
 
 
        ////----------------WELCOME PAGE-----------------------------
 
            //Welcome Panel
 
            welcome.setLayout(main);
            welcome.setBackground(Color.orange);
 
 
 
 
            // Header
 
            JPanel nort=new JPanel();
            nort.setLayout(flow);
            nort.setBackground(Color.red);
            JPanel north=new JPanel();
 
            JPanel box1=new JPanel();
            JPanel box2=new JPanel();
 
 
            north.setLayout(g);
            box1.setLayout(flow);
            box2.setLayout(flow);
            box1.setBackground(Color.red);
            box2.setBackground(Color.red);
 
            JLabel wel=new JLabel("Welcome to Cairo Int Airport");
            JLabel wel2=new JLabel("TERMINAL 2");
 
            wel.setFont(header);
            wel2.setFont(header);
 
            box1.add(wel);
            box2.add(wel2);
            north.add(box1);
            north.add(box2);
            north.add(clkPanel);
            nort.add(north);
 
            welcome.add(nort,BorderLayout.NORTH);
 
            //Center
 
            JPanel centerW=new JPanel();
            JPanel text=new JPanel();
            JPanel button=new JPanel();
 
            centerW.setLayout(g);
            text.setLayout(flow);
            button.setLayout(flow);
            centerW.setBackground(Color.orange);
            text.setBackground(Color.orange);
            button.setBackground(Color.orange);
 
            JLabel start=new JLabel("Press button to start Check-in");
            start.setFont(textF);
            JButton strt=new JButton("start");
            strt.setSize(200, 50);
 
            strt.setPreferredSize(but);
            strt.addActionListener(this);
            strt.setBackground(Color.WHITE);
 
            text.add(start);
            button.add(strt);
            centerW.add(text);
            centerW.add(button);
 
            welcome.add(centerW,BorderLayout.CENTER);
 
            //Image left and right panel.
 
           JPanel left=new JPanel();
           JPanel right=new JPanel();
           left.setBackground(Color.black);
           right.setBackground(Color.black);
 
           BufferedImage lPhoto = null;
            try {
               lPhoto= ImageIO.read(new File("left.jpg"));
            } catch (IOException e) {            }
 
            JLabel l=new JLabel(new ImageIcon(lPhoto));
 
            BufferedImage rPhoto= null;
            try {
               rPhoto = ImageIO.read(new File("right.jpg"));
            } catch (IOException e) {            }
 
            JLabel r=new JLabel(new ImageIcon(rPhoto));
 
            left.add(l);
            right.add(r,new FlowLayout(FlowLayout.LEFT));
 
            welcome.add(left,BorderLayout.WEST);
            welcome.add(right,BorderLayout.EAST);
 
 
            mainF.add(welcome);
            mainF.pack();
 
    //----------------------TICKET PAGE-------------------------------
 
            //Ticket Panel
 
            ticket.setLayout(main);
 
            //Head
 
 
            head.setLayout(g);
            head.setBackground(Color.red);
 
           JPanel hText=new JPanel();
           hText.setLayout(flow);
 
            JLabel ticketH=new JLabel("Please enter your ticket or Booking number");
           ticketH.setFont(header);
           hText.add(ticketH);
           head.add(hText);
 
           ticket.add(head,BorderLayout.NORTH);
 
           //Center
 
           JPanel centerT=new JPanel();
           JPanel grid=new JPanel();
           JPanel bookingP=new JPanel();
 
           centerT.setPreferredSize(new Dimension(600,700));
 
           centerT.setLayout(flow);
           grid.setLayout(new GridLayout(8,2));
           bookingP.setLayout(new FlowLayout());
 
           centerT.setBackground(Color.ORANGE);
           grid.setBackground(Color.ORANGE);
           bookingP.setBackground(Color.WHITE);           
 
               //Booking Panel
               JLabel booking=new JLabel("Booking ID");
               JTextField bookingF=new JTextField();
               JButton checkBook=new JButton("Check");
               checkBook.setPreferredSize(but);
               checkBook.addActionListener(this);
 
               bookingF.setPreferredSize(field);
               booking.setLabelFor(bookingF);
               bookingP.add(booking);
               bookingP.add(bookingF);
 
 
           grid.add(bookingP);
           grid.add(checkBook);
 
           JLabel labelName=new JLabel("Passenger Name:");
           JLabel fieldName=new JLabel();
           labelName.setFont(labels);
           fieldName.setPreferredSize(field);
           labelName.setLabelFor(fieldName);
           grid.add(labelName);
           grid.add(fieldName);
 
           JLabel labelFlight=new JLabel("Flight No:");
           labelFlight.setFont(labels);
           JLabel fieldFlight=new JLabel();
           fieldFlight.setPreferredSize(field);
           labelFlight.setLabelFor(fieldFlight);
           grid.add(labelFlight);
           grid.add(fieldFlight);
 
           JLabel labelDest=new JLabel("Destination:");
           labelDest.setFont(labels);
           JLabel fieldDest=new JLabel();
           fieldDest.setPreferredSize(field);
           labelDest.setLabelFor(fieldDest);
           grid.add(labelDest);
           grid.add(fieldDest);
 
           JLabel labelTime=new JLabel("Time (HH:MM:SS):");
           labelTime.setFont(labels);
           JLabel fieldTime=new JLabel();
           fieldTime.setPreferredSize(field);
           labelTime.setLabelFor(fieldTime);
           grid.add(labelTime);
           grid.add(fieldTime);
 
           JLabel labelPassenger=new JLabel("Passengers:");
           labelPassenger.setFont(labels);
           JTextArea areaPassenger=new JTextArea();
           areaPassenger.setPreferredSize(new Dimension(200,100));
           labelPassenger.setLabelFor(areaPassenger);
           grid.add(labelPassenger);
           grid.add(areaPassenger);
 
           JLabel labelCorrect=new JLabel("Is this information correct?");
           labelCorrect.setFont(labels);
                JPanel choice=new JPanel();
                choice.setLayout(flow);
                JButton yes=new JButton("Yes");
                yes.addActionListener(this);
                yes.setPreferredSize(but);
                JButton no=new JButton("No");
                no.setPreferredSize(but);
 
                choice.setBackground(Color.orange);
                choice.add(yes);
                choice.add(no);
            grid.add(labelCorrect);
            grid.add(choice);
 
 
 
 
           centerT.add(grid);
 
           ticket.add(centerT,BorderLayout.CENTER);
           mainF.pack();
 
 
       //=----------------Seating------------------------------------
 
           seats.setLayout(main);
 
           //Header
 
           JPanel headP=new JPanel();
           headP.setLayout(flow);
           headP.setBackground(Color.red);
           Header.setLayout(g);
           Header.setBackground(Color.red);
 
           JLabel seatH=new JLabel("Please select your seats");
           seatH.setFont(header);
 
           Header.add(seatH);
 
           headP.add(Header);
           seats.add(headP,BorderLayout.NORTH);
 
 
           mainF.pack();
 
 
 
 
 
 
 
 
       //-----------------Baggage------------------------------------
 
 
 
 
           //***********OVERWEIGHT****************************
 
 
 
       //----------------Summary--------------------------------------
 
 
 
           //******************Boarding Pass***********************
 
 
 
 
 
 
 
 
 
 
 
 
    }
 
    public void actionPerformed(ActionEvent e) {
 
        //WELCOME SELECTIONS
 
        if(e.getActionCommand().equals("start"))
        {
            mainF.remove(welcome);
            head.add(clkPanel);
            mainF.add(ticket);
 
            mainF.validate();
            mainF.repaint();
 
 
        //TICKETS SELECTIONS
 
        }else if(e.getActionCommand().equals("Check"))
        {
 
 
        }else if(e.getActionCommand().equals("yes"));
        {
            mainF.remove(ticket);
            mainF.add(seats);
            Header.add(clkPanel);
            mainF.validate();
            mainF.repaint();
 
        }
 
 
 
    }
 
 
};
 
public class Main {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
 
        terminal wel=new terminal();
    }
 
}