Accessing Another Window Fault

Question

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Arrays;
public class PasswordDemo extends JPanel   implements ActionListener {
    private static String OK = "ok";
    private static String HELP = "help";
    private JFrame controllingFrame; //needed for dialogs
    private JPasswordField passwordField;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    public PasswordDemo(JFrame f) {
        //Use the default FlowLayout.
        controllingFrame = f;
        //Create everything.
        passwordField = new JPasswordField(10);
        passwordField.setActionCommand(OK);
        passwordField.addActionListener(this);
        JLabel label = new JLabel("Enter the password: ");
        label.setLabelFor(passwordField);
        JComponent buttonPane = createButtonPanel();
        //Lay out everything.
        JPanel textPane = new JPanel(new FlowLayout(FlowLayout.TRAILING));
        textPane.add(label);
        textPane.add(passwordField);
        add(textPane);
        add(buttonPane);
    protected JComponent createButtonPanel() {
        JPanel p = new JPanel(new GridLayout(0,1));
        JButton okButton = new JButton("OK");
        JButton helpButton = new JButton("Help");
        okButton.setActionCommand(OK);
        helpButton.setActionCommand(HELP);
        okButton.addActionListener(this);
        helpButton.addActionListener(this);
        p.add(okButton);
        p.add(helpButton);
        return p;
    public void actionPerformed(ActionEvent e) {
        String cmd = e.getActionCommand();
        if (OK.equals(cmd)) { //Process the password.
            char[] input = passwordField.getPassword();
            if (isPasswordCorrect(input)) {
             //   JOptionPane.showMessageDialog(controllingFrame, "Success! You typed the right password.");      
                 //class BasicPanel extends JPanel {
            //          public BasicPanel() {
                           JButton okButton = new JButton("ok");
                           okButton.addActionListener(new ActionListener() {
                                public void actionPerformed(ActionEvent arg0) {
                                     test2 inputForm = new test2();
                                     inputForm.setVisible(true);
                           add(okButton);
                 class test2 extends javax.swing.JFrame {
                     public test2() {
                         initComponents();
                     private void initComponents() {
                         jPanel1 = new javax.swing.JPanel();
                         jButton1 = new javax.swing.JButton();
                         jButton2 = new javax.swing.JButton();
                         setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
                         jButton1.setText("jButton1");
                         jButton2.setText("jButton2");
                         javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
                         jPanel1.setLayout(jPanel1Layout);
                         jPanel1Layout.setHorizontalGroup(
                             jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                             .addGroup(jPanel1Layout.createSequentialGroup()
                                 .addContainerGap()
                                 .addComponent(jButton1)
                                 .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                 .addComponent(jButton2)
                                 .addContainerGap(196, Short.MAX_VALUE))
                         jPanel1Layout.setVerticalGroup(
                             jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                             .addGroup(jPanel1Layout.createSequentialGroup()
                                 .addContainerGap()
                                 .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                                     .addComponent(jButton1)
                                     .addComponent(jButton2))
                                 .addContainerGap(174, Short.MAX_VALUE))
                         javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
                         getContentPane().setLayout(layout);
                         layout.setHorizontalGroup(
                             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                             .addGroup(layout.createSequentialGroup()
                                 .addContainerGap()
                                 .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                 .addContainerGap(24, Short.MAX_VALUE))
                         layout.setVerticalGroup(
                             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                             .addGroup(layout.createSequentialGroup()
                                 .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                 .addContainerGap(92, Short.MAX_VALUE))
                         pack();
                     }// </editor-fold>
                      * @param args the command line arguments
                     // Variables declaration - do not modify
                     private javax.swing.JButton jButton1;
                     private javax.swing.JButton jButton2;
                     private javax.swing.JPanel jPanel1;
                     // End of variables declaration
           else {
                JOptionPane.showMessageDialog(controllingFrame,
                    "Invalid password. Try again.",
                    "Error Message",
                    JOptionPane.ERROR_MESSAGE);
            //Zero out the possible password, for security.
            Arrays.fill(input, '0');
            passwordField.selectAll();
            resetFocus();
        } else { //The user has asked for help.
            JOptionPane.showMessageDialog(controllingFrame,
                "You can get the password by searching this example's\n"
              + "source code for the string \"correctPassword\".\n"
              + "Or look at the section How to Use Password Fields in\n"
              + "the components section of The Java Tutorial.");
     * Checks the passed-in array against the correct password.
     * After this method returns, you should invoke eraseArray
     * on the passed-in array.
    private static boolean isPasswordCorrect(char[] input) {
        boolean isCorrect = true;
        char[] correctPassword = { 'b', 'u', 'g', 'a', 'b', 'o', 'o' };
        if (input.length != correctPassword.length) {
            isCorrect = false;
        } else {
            isCorrect = Arrays.equals (input, correctPassword);
        //Zero out the password.
        Arrays.fill(correctPassword,'0');
        return isCorrect;
    //Must be called from the event dispatch thread.
    protected void resetFocus() {
        passwordField.requestFocusInWindow();
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event dispatch thread.
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("PasswordDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Create and set up the content pane.
        final PasswordDemo newContentPane = new PasswordDemo(frame);
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);
        //Make sure the focus goes to the right component
        //whenever the frame is initially given the focus.
        frame.addWindowListener(new WindowAdapter() {
            public void windowActivated(WindowEvent e) {
                newContentPane.resetFocus();
        //Display the window.
        frame.pack();
        frame.setVisible(true);
    public static void main(String[] args) {
        //Schedule a job for the event dispatch thread:
        //creating and showing this application's GUI.
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                //Turn off metal's use of bold fonts
          UIManager.put("swing.boldMetal", Boolean.FALSE);
          createAndShowGUI();
}Hey there everyone, i am trying to access another window using swing. I am trying to do so via password verification, when the use inputs the right password it should grant them access to the form fillout page which i am building. Problem is that there is something wrong when i input the right password and click "OK". Its not going through and giving me access to the next page. I just need pointers as to what i should fix. Thank you very much.

Answer 1

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Arrays;
/* PasswordDemo.java requires no other files. */
public class PasswordDemo extends JPanel
                          implements ActionListener {
    private static String OK = "ok";
    private static String HELP = "help";
    private JFrame controllingFrame; //needed for dialogs
    private JPasswordField passwordField;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    public PasswordDemo(JFrame f) {
        //Use the default FlowLayout.
        controllingFrame = f;
        //Create everything.
        passwordField = new JPasswordField(10);
        passwordField.setActionCommand(OK);
        passwordField.addActionListener(this);
        JLabel label = new JLabel("Enter the password: ");
        label.setLabelFor(passwordField);
        JComponent buttonPane = createButtonPanel();
        //Lay out everything.
        JPanel textPane = new JPanel(new FlowLayout(FlowLayout.TRAILING));
        textPane.add(label);
        textPane.add(passwordField);
        add(textPane);
        add(buttonPane);
    protected JComponent createButtonPanel() {
        JPanel p = new JPanel(new GridLayout(0,1));
        JButton okButton = new JButton("OK");
        JButton helpButton = new JButton("Help");
        okButton.setActionCommand(OK);
        helpButton.setActionCommand(HELP);
        okButton.addActionListener(this);
        helpButton.addActionListener(this);
        p.add(okButton);
        p.add(helpButton);
        return p;
    public void actionPerformed(ActionEvent e) {
        String cmd = e.getActionCommand();
        if (OK.equals(cmd)) { //Process the password.
            char[] input = passwordField.getPassword();
            if (isPasswordCorrect(input)) {
             //   JOptionPane.showMessageDialog(controllingFrame,
             //       "Success! You typed the right password.");
                  jLabel1 = new javax.swing.JLabel();
                 jLabel2 = new javax.swing.JLabel();
                 jLabel3 = new javax.swing.JLabel();
                 jTextField1 = new javax.swing.JTextField();
                 jTextField2 = new javax.swing.JTextField();
                 jTextField3 = new javax.swing.JTextField();
                 jLabel1.setText("Name: ");
                 jLabel2.setText("Age: ");
                 jLabel3.setText("Height: ");
                 jTextField1.setText("jTextField1");
                 jTextField2.setText("jTextField2");
                 jTextField3.setText("jTextField3");
                 javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
                 getContentPane().setLayout(layout);
                 layout.setHorizontalGroup(
                     layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                     .addGroup(layout.createSequentialGroup()
                         .addGap(23, 23, 23)
                         .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                             .addGroup(layout.createSequentialGroup()
                                 .addComponent(jLabel1)
                                 .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                 .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                             .addGroup(layout.createSequentialGroup()
                                 .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                     .addComponent(jLabel2)
                                     .addComponent(jLabel3))
                                 .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                 .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                     .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                     .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))))
                         .addContainerGap(274, Short.MAX_VALUE))
                 layout.setVerticalGroup(
                     layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                     .addGroup(layout.createSequentialGroup()
                         .addGap(23, 23, 23)
                         .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                             .addComponent(jLabel1)
                             .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                         .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                             .addComponent(jLabel2)
                             .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                         .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                             .addComponent(jLabel3)
                             .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                         .addContainerGap(205, Short.MAX_VALUE))
                 pack();
            } else {
                JOptionPane.showMessageDialog(controllingFrame,
                    "Invalid password. Try again.",
                    "Error Message",
                    JOptionPane.ERROR_MESSAGE);
            //Zero out the possible password, for security.
            Arrays.fill(input, '0');
            passwordField.selectAll();
            resetFocus();
        } else { //The user has asked for help.
            JOptionPane.showMessageDialog(controllingFrame,
                "You can get the password by searching this example's\n"
              + "source code for the string \"correctPassword\".\n"
              + "Or look at the section How to Use Password Fields in\n"
              + "the components section of The Java Tutorial.");
     * Checks the passed-in array against the correct password.
     * After this method returns, you should invoke eraseArray
     * on the passed-in array.
    private static boolean isPasswordCorrect(char[] input) {
        boolean isCorrect = true;
        char[] correctPassword = { 'b', 'u'};
        if (input.length != correctPassword.length) {
            isCorrect = false;
        } else {
            isCorrect = Arrays.equals (input, correctPassword);
        //Zero out the password.
        Arrays.fill(correctPassword,'0');
        return isCorrect;
    //Must be called from the event dispatch thread.
    protected void resetFocus() {
        passwordField.requestFocusInWindow();
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event dispatch thread.
    class test2 extends javax.swing.JFrame {
        public test2() {
            initComponents();
        private void initComponents() {
            jPanel1 = new javax.swing.JPanel();
            jButton1 = new javax.swing.JButton();
            jButton2 = new javax.swing.JButton();
            setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
            jButton1.setText("jButton1");
            jButton2.setText("jButton2");
            javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
            jPanel1.setLayout(jPanel1Layout);
            jPanel1Layout.setHorizontalGroup(
                jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(jButton1)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                    .addComponent(jButton2)
                    .addContainerGap(196, Short.MAX_VALUE))
            jPanel1Layout.setVerticalGroup(
                jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addContainerGap()
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton1)
                        .addComponent(jButton2))
                    .addContainerGap(174, Short.MAX_VALUE))
            javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
            getContentPane().setLayout(layout);
            layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addContainerGap(24, Short.MAX_VALUE))
            layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addContainerGap(92, Short.MAX_VALUE))
            pack();
        }// </editor-fold>
         * @param args the command line arguments
        // Variables declaration - do not modify
        private javax.swing.JButton jButton1;
        private javax.swing.JButton jButton2;
        private javax.swing.JPanel jPanel1;
        // End of variables declaration
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("PasswordDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Create and set up the content pane.
        final PasswordDemo newContentPane = new PasswordDemo(frame);
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);
        //Make sure the focus goes to the right component
        //whenever the frame is initially given the focus.
        frame.addWindowListener(new WindowAdapter() {
            public void windowActivated(WindowEvent e) {
                newContentPane.resetFocus();
        //Display the window.
        frame.pack();
        frame.setVisible(true);
    public static void main(String[] args) {
        //Schedule a job for the event dispatch thread:
        //creating and showing this application's GUI.
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                //Turn off metal's use of bold fonts
          UIManager.put("swing.boldMetal", Boolean.FALSE);
          createAndShowGUI();
}Alright so i applied what you told me and tried to insert a new JFrame window with buttons and text fields. But i keep getting errors getContentPane() and the pack() in the end. I really can't figure out whats causing the error.
Edited by: 860597 on May 22, 2011 3:37 PM