I Can't switch my CardLayout @.@

Question

There is a card 3 but i havn't add ,so the "Enterbtn" is to trigger card 3.
So what is wrong with my code that it can't switch? I changed the cardPanel from 2 to 1 and 1 to 2 but it only appear card 2.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class HPhoneInv extends JFrame {
private int currentCard = 1;
private JPanel cardPanel;
private CardLayout cl;
public HPhoneInv() {
setTitle("Handphone Inventory System");
setSize(500, 160);
cardPanel = new JPanel();
cl = new CardLayout();
cardPanel.setLayout(cl);
JPanel jp1 = new JPanel();
jp1.setLayout(new GridLayout(1,1) );
JLabel jl1 = new JLabel("Select Option:");
jp1.add(jl1);
cardPanel.add(jp1, "1");
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(1,2) );
JButton AcqBtn=new JButton("Used Phone Acquisition");
JButton TranBtn=new JButton("Sale Transaction");
buttonPanel.add(AcqBtn);
buttonPanel.add(TranBtn);
getContentPane().add(jp1, BorderLayout.NORTH);
getContentPane().add(buttonPanel, BorderLayout.SOUTH);
JPanel jp2 = new JPanel();
jp2.setLayout(new GridLayout(5,2) );
JLabel lbl1 = new JLabel("Cust IC No:");
JLabel lbl2= new JLabel("Brand:");
JLabel lbl3 =new JLabel("Model:");
JLabel lbl4=new JLabel("Serial No:");
JLabel lbl5=new JLabel("Cost:");
JTextField tf1=new JTextField("");
JTextField tf2=new JTextField("");
JTextField tf3=new JTextField("");
JTextField tf4=new JTextField("");
JTextField tf5=new JTextField("");
jp2.add(lbl1);
jp2.add(tf1);
jp2.add(lbl2);
jp2.add(tf2);
jp2.add(lbl3);
jp2.add(tf3);
jp2.add(lbl4);
jp2.add(tf4);
jp2.add(lbl5);
jp2.add(tf5);
cardPanel.add(jp2, "2");
JPanel buttonPanel2 = new JPanel();
buttonPanel2.setLayout(new GridLayout(1,2) );
JButton EnterBtn=new JButton("Enter");
JButton CancelBtn=new JButton("Cancel");
buttonPanel2.add(EnterBtn);
buttonPanel2.add(CancelBtn);
getContentPane().add(jp2, BorderLayout.NORTH);
getContentPane().add(buttonPanel2, BorderLayout.SOUTH);
AcqBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
if (currentCard < 2) {
currentCard +=1;
cl.show(cardPanel, "" + (currentCard));
TranBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
if (currentCard < 2) {
currentCard += 1;
cl.show(cardPanel, "" + (currentCard));
EnterBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
if (currentCard > 1) {
currentCard = 1;
CancelBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
if (currentCard > 1) {
currentCard = 1;
cl.show(cardPanel, "" + (currentCard));
public static void main(String[] args) {
HPhoneInv cl = new HPhoneInv();
cl.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
cl.setVisible(true);
Message was edited by:
RockmanEXE
Message was edited by:
RockmanEXE

Answer 1

The order of the components, added into the cards and into the JFrame are wrong, so i just rearranged the order and i added one more JPanel.
so based on that, u code accordinglyimport java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class HPhoneInv extends JFrame {
    private int currentCard = 1;
    private JPanel cardPanel;
    private CardLayout cl;
    JPanel card1 = null;
    JPanel card2 = null;
    public HPhoneInv() {
        setTitle("Handphone Inventory System");
        setSize(500, 160);
        cardPanel = new JPanel(new CardLayout());
        JPanel jp1 = new JPanel();
        jp1.setLayout(new GridLayout(1,1) );
        JLabel jl1 = new JLabel("Select Option:");
        jp1.add(jl1);
        //cardPanel.add(jp1, "1");
        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new GridLayout(1,2) );
        JButton AcqBtn=new JButton("Used Phone Acquisition");
        JButton TranBtn=new JButton("Sale Transaction");
        buttonPanel.add(AcqBtn);
        buttonPanel.add(TranBtn);
        card1 = new JPanel(new BorderLayout());
        //getContentPane().add(jp1, BorderLayout.NORTH);
        //getContentPane().add(buttonPanel, BorderLayout.SOUTH);
        card1.add(jp1, BorderLayout.NORTH);
        card1.add(buttonPanel, BorderLayout.SOUTH);
        card2 = new JPanel(new BorderLayout());
        JPanel jp2 = new JPanel();
        jp2.setLayout(new GridLayout(5,2) );
        JLabel lbl1 = new JLabel("Cust IC No:");
        JLabel lbl2= new JLabel("Brand:");
        JLabel lbl3 =new JLabel("Model:");
        JLabel lbl4=new JLabel("Serial No:");
        JLabel lbl5=new JLabel("Cost:");
        JTextField tf1=new JTextField("");
        JTextField tf2=new JTextField("");
        JTextField tf3=new JTextField("");
        JTextField tf4=new JTextField("");
        JTextField tf5=new JTextField("");
        jp2.add(lbl1);
        jp2.add(tf1);
        jp2.add(lbl2);
        jp2.add(tf2);
        jp2.add(lbl3);
        jp2.add(tf3);
        jp2.add(lbl4);
        jp2.add(tf4);
        jp2.add(lbl5);
        jp2.add(tf5);
        //cardPanel.add(jp2, "2");
        JPanel buttonPanel2 = new JPanel();
        buttonPanel2.setLayout(new GridLayout(1,2) );
        JButton EnterBtn=new JButton("Enter");
        JButton CancelBtn=new JButton("Cancel");
        buttonPanel2.add(EnterBtn);
        buttonPanel2.add(CancelBtn);
        //getContentPane().add(jp2, BorderLayout.NORTH);
        //getContentPane().add(buttonPanel2, BorderLayout.SOUTH);
        card2.add(jp2, BorderLayout.NORTH);
        card2.add(buttonPanel2, BorderLayout.SOUTH);
        cardPanel.add(card2,"two");
        cardPanel.add(card1,"one");
        this.getContentPane().add(cardPanel);
         AcqBtn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                    CardLayout cardLayout = (CardLayout)(cardPanel.getLayout());
                    cardLayout.show(cardPanel,"two");
                /*if (currentCard < 2) {
                    currentCard +=1;
                    cl.show(cardPanel, "" + (currentCard));
           TranBtn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                    CardLayout cardLayout = (CardLayout)(cardPanel.getLayout());
                    cardLayout.show(cardPanel,"two");
                /*if (currentCard < 2) {
                    currentCard += 1;
                  cl.show(cardPanel, "" + (currentCard));
            EnterBtn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                    //System.out.println("Enter Button got clicked");
                    CardLayout cardLayout = (CardLayout)(cardPanel.getLayout());
                    cardLayout.show(cardPanel,"one");
         CancelBtn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                    System.exit(0);
                if (currentCard > 1) {
                    currentCard = 1;
                  cl.show(cardPanel, "" + (currentCard));
    public static void main(String[] args) {
        HPhoneInv cl = new HPhoneInv();
        cl.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        cl.setVisible(true);
}