please help me
hello.
i am having trouble logging on to the video library system that i just developed. there is only one main() method (in the HomeEntertainment class) used in my video library project (the 4 classes are shown below). when i try to log on to my system, i only get one problem thrown my way. when i enter my login details and press OK, i get one error message instead of a menu. how can i get rid of this problem?
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
publicclass HomeEntertainmentextends JPanelimplements ActionListener{
private JTabbedPane jtp =new JTabbedPane();
private JPanel cP1 =new JPanel();
private JPanel cP2 =new JPanel();
private JPanel cP3 =new JPanel();
private JPanel bP1 =new JPanel();
private JPanel bP2 =new JPanel();
private JPanel bP3 =new JPanel();
private JButton jbAdministratorLogOn =new JButton("Log On");
private JButton jbNewUserRegister =new JButton("Register");
private JButton jbExistingUserLogOn =new JButton("Log On");
private JButton jbAdministratorExitTheSystem =new JButton("Exit the system");
private JButton jbNewUserExitTheSystem =new JButton("Exit the system");
private JButton jbExistingUserExitTheSystem =new JButton("Exit the system");
public HomeEntertainment(){
cP1.setLayout(new BorderLayout());
cP2.setLayout(new BorderLayout());
cP3.setLayout(new BorderLayout());
bP1.setBorder(new TitledBorder("Make a choice"));
bP2.setBorder(new TitledBorder("Make a choice"));
bP3.setBorder(new TitledBorder("Make a choice"));
bP1.add(jbAdministratorLogOn);
bP2.add(jbNewUserRegister);
bP3.add(jbExistingUserLogOn);
bP1.add(jbAdministratorExitTheSystem);
bP2.add(jbNewUserExitTheSystem);
bP3.add(jbExistingUserExitTheSystem);
cP1.add(bP1, BorderLayout.SOUTH);
cP2.add(bP2, BorderLayout.SOUTH);
cP3.add(bP3, BorderLayout.SOUTH);
jtp.addTab("Administrator", cP1);
jtp.addTab("New User", cP2);
jtp.addTab("Existing User", cP3);
JFrame jf =new JFrame("Home Entertainment");
jf.getContentPane().add(jtp, BorderLayout.CENTER);
jf.setSize(500, 500);
jf.setVisible(true);
jbAdministratorLogOn.addActionListener(this);
jbNewUserRegister.addActionListener(this);
jbExistingUserLogOn.addActionListener(this);
jbAdministratorExitTheSystem.addActionListener(this);
jbNewUserExitTheSystem.addActionListener(this);
jbExistingUserExitTheSystem.addActionListener(this);
}
publicvoid actionPerformed(ActionEvent e){
if(e.getSource() == jbAdministratorLogOn){
LogOn logOn =new LogOn();
logOn.setVisible(true);
}
if(e.getSource() == jbNewUserRegister){
RegistrationForm r =new RegistrationForm();
r.setVisible(true);
}
if(e.getSource() == jbExistingUserLogOn){
LogOn logOn =new LogOn();
logOn.setVisible(true);
}
if(e.getSource() == jbAdministratorExitTheSystem){
System.exit(0);
}
if(e.getSource() == jbNewUserExitTheSystem){
System.exit(0);
}
if(e.getSource() == jbExistingUserExitTheSystem){
System.exit(0);
}
}
publicstaticvoid main(String[] args){
new HomeEntertainment();
}
}
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
publicclass LogOnextends JFrame{
JPanel pnlBody, pnlFooter;
JLabel unLabel =new JLabel("Username: ");
JLabel pwLabel =new JLabel("Password: ");
JTextField jtfUN =new JTextField(20);
JPasswordField jtfPW =new JPasswordField(20);
JButton jbOK =new JButton("OK");
JButton jbCancel =new JButton("Cancel");
Container contentpane;
public LogOn(){
super("Welcome to Home Entertainment");
contentpane = getContentPane();
contentpane.setLayout(new BorderLayout());
pnlBody =new JPanel();
pnlFooter =new JPanel();
pnlBody.add(unLabel);
pnlBody.add(jtfUN);
pnlBody.add(pwLabel);
pnlBody.add(jtfPW);
pnlFooter.add(jbOK);
pnlFooter.add(jbCancel);
contentpane.add(pnlBody,BorderLayout.NORTH);
contentpane.add(pnlFooter,BorderLayout.CENTER);
pack();
setVisible(true);
jbOK.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
String username;
String password;
String[] userUsernameArray ={"Ann Smyth","John Murphy"};
String[] userPasswordArray ={"1","2"};
String[] adminUsernameArray ={"Administrator"};
String[] adminPasswordArray ={"0"};
username = jtfUN.getText().trim();
password =new String(jtfPW.getPassword());
if(username.equals(userUsernameArray) && password.equals(userPasswordArray)){
setVisible(false);
UserMainMenu umm =new UserMainMenu();
umm.setVisible(true);
}
elseif(username.equals(adminUsernameArray) && password.equals(adminPasswordArray)){
setVisible(false);
AdminMainMenu amm =new AdminMainMenu();
amm.setVisible(true);
}
else{
JOptionPane.showMessageDialog(null,"Error\n\nYou have entered an incorrect username and/or password\nPlease try again", null, JOptionPane.ERROR_MESSAGE);
}
}
});
jbCancel.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
setVisible(false);
}
});
}
}
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
publicclass AdminMainMenuextends JFrame{
JPanel pnlBody;
JButton btnOrderSystem =new JButton("Order System");
JButton btnMaintenance =new JButton("Maintenance");
JButton btnAdminLogOff =new JButton("Log Off");
Container contentpane;
public AdminMainMenu(){
super("Main Menu");
contentpane = getContentPane();
contentpane.setLayout(new BorderLayout());
pnlBody =new JPanel();
pnlBody.add(btnOrderSystem);
pnlBody.add(btnMaintenance);
pnlBody.add(btnAdminLogOff);
contentpane.add(pnlBody,BorderLayout.CENTER);
pack();
setVisible(true);
btnOrderSystem.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
setVisible(false);
//OrderSystem os = new OrderSystem();
//os.setVisible(true);
}
});
btnMaintenance.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
setVisible(false);
//Maintenance m = new Maintenance();
//m.setVisible(true);
}
});
btnAdminLogOff.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
int result;
result = JOptionPane.showConfirmDialog(null,"Are you sure you want to log off?", null, JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);
if(result == JOptionPane.YES_OPTION){
setVisible(false);
}
}
});
}
}
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
publicclass UserMainMenuextends JFrame{
JPanel pnlBody;
JButton btnUserProductMenu =new JButton("Product Menu");
JButton btnUserMemberMenu =new JButton("Member Menu");
JButton btnUserRentalMenu =new JButton("Rental Menu");
JButton btnUserLogOff =new JButton("Log Off");
Container contentpane;
public UserMainMenu(){
super("Main Menu");
contentpane = getContentPane();
contentpane.setLayout(new BorderLayout());
pnlBody =new JPanel();
pnlBody.add(btnUserProductMenu);
pnlBody.add(btnUserMemberMenu);
pnlBody.add(btnUserRentalMenu);
pnlBody.add(btnUserLogOff);
contentpane.add(pnlBody,BorderLayout.CENTER);
pack();
setVisible(true);
btnUserProductMenu.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
//UserProductMenu upm = new UserProductMenu();
//upm.setVisible(true);
}
});
btnUserMemberMenu.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
//UserMemberMenu umm = new UserMemberMenu();
//umm.setVisible(true);
}
});
btnUserRentalMenu.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
//UserRentalMenu urm = new UserRentalMenu();
//urm.setVisible(true);
}
});
btnUserLogOff.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
int result;
result = JOptionPane.showConfirmDialog(null,"Are you sure you want to log off?", null, JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);
if(result == JOptionPane.YES_OPTION){
setVisible(false);
}
}
});
}
}
