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Hi i have this project were i have to do a quiz. i wrote the questions in a textfile and i called them through java. I have also made a menu to choose which type of quiz. But before accessing the quiz i have to do a password and a login. I managed to do the password but when i tried to join this to the whole program its not working. This is the main program:
import java.util.*;
import java.io.*;
import java.util.Scanner;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Arrays;
public class GeographyQuiz_Menu
{
public static void main (String args[])
{
String yourChoice;
char choice;
int i, choice1;
Scanner keyboard = new Scanner(System.in);
i = 0;
while (i<=6)
{
// Input Menu
System.out.println(" ");
System.out.println("Welcome!");
System.out.println("This is a Geography Quiz");
System.out.println("Choose from the following Menu:");
System.out.println("1. Plate Tectonics");
System.out.println("2. Rivers");
System.out.println("3. Rocks");
System.out.println("4. Quit");
System.out.print("Please enter your choice: ");
yourChoice = keyboard.next(); // Enter choice
System.out.println(" ");
// Validate Choice
choice1=Integer.parseInt(yourChoice); // Convert variable from string to integer
if(choice1<1 || choice1>4)
{
System.out.println("This is an invalid choice");
}
switch(choice1)
{
case 1: System.out.println("You are taking the Plate Tectonics Quiz");
Scanner s = null;
try {
s = new Scanner(new BufferedReader(new FileReader("plate_tectonics.txt")));
while (s.hasNext()) {
s.useDelimiter(",\\s*");
System.out.println(s.next());
}
} finally {
if (s != null)
s.close();
break;
}
case 2: System.out.println("You are taking the River Quiz");
Scanner b = null;
try {
b = new Scanner(new BufferedReader(new FileReader("rivers.txt")));
while (b.hasNext()) {
b.useDelimiter(",\\b*");
System.out.println(b.next());
}
} finally {
if (b != null) {
b.close();
}
break;
}
case 3: System.out.println("You are taking the Rocks Quiz");
Scanner c = null;
try {
c = new Scanner(new BufferedReader(new FileReader("rocks.txt")));
while (c.hasNext()) {
c.useDelimiter(",\\c*");
System.out.println(c.next());
}
} finally {
if (c != null) {
c.close();
}
break;
}
}
}
}
}
And this is the part where it does the login password.
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;
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.");
} 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,
"Ask the teacher for the password");
}
}
/**
* 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 = { 'g', 'e', '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_CLOS E);
//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();
}
});
}
}
Can someone pls tell me how to join them to make them work in the correct way. Thanks a lot.
