please help me

hello mbmerrill.

there is only one main() method (in the HomeEntertainment class) used in my video library project (slightly modified LogOn class is shown below along with the other 3 classes). the slight modification that i made to the LogOn class was that i put in an if, an else-if and an if instead of 2 if's and 2 else's. when i try to log on to my system this time, 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?

thanks for your help.

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.border.*;

public class HomeEntertainment extends JPanel implements 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);

}

public void 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);

}

}

public static void main(String[] args){

new HomeEntertainment();

}

}

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class LogOn extends 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(){

public void 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);

}

else if(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(){

public void actionPerformed(ActionEvent e){

setVisible(false);

}

});

}

}

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class AdminMainMenu extends 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(){

public void actionPerformed(ActionEvent e){

setVisible(false);

//OrderSystem os = new OrderSystem();

//os.setVisible(true);

}

});

btnMaintenance.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

setVisible(false);

//Maintenance m = new Maintenance();

//m.setVisible(true);

}

});

btnAdminLogOff.addActionListener(new ActionListener(){

public void 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.*;

public class UserMainMenu extends 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(){

public void actionPerformed(ActionEvent e){

//UserProductMenu upm = new UserProductMenu();

//upm.setVisible(true);

}

});

btnUserMemberMenu.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

//UserMemberMenu umm = new UserMemberMenu();

//umm.setVisible(true);

}

});

btnUserRentalMenu.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

//UserRentalMenu urm = new UserRentalMenu();

//urm.setVisible(true);

}

});

btnUserLogOff.addActionListener(new ActionListener(){

public void 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);

}

}

});

}

}

james-mcfaddena at 2007-7-29 12:03:08 >