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|
import java.io.*;
import java.sql.Timestamp;
import java.util.Date;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
public class Login extends JFrame
{
// Variables declaration
private JLabel jLabel1;
private JLabel jLabel2;
private JTextField jTextField1;
private JPasswordField jPasswordField1;
private JButton jButton1;
private JPanel contentPane;
// End of variables declaration
public Login()
{
super();
create();
this.setVisible(true);
}
private void create()
{
jLabel1 = new JLabel();
jLabel2 = new JLabel();
jTextField1 = new JTextField();
jPasswordField1 = new JPasswordField();
jButton1 = new JButton();
contentPane = (JPanel)this.getContentPane();
//
// jLabel1
//
jLabel1.setHorizontalAlignment(SwingConstants.LEFT);
jLabel1.setForeground(new Color(0, 0, 255));
jLabel1.setText("Username:");
//
// jLabel2
//
jLabel2.setHorizontalAlignment(SwingConstants.LEFT);
jLabel2.setForeground(new Color(0, 0, 255));
jLabel2.setText("Password:");
//
// jTextField1
//
jTextField1.setForeground(new Color(0, 0, 255));
jTextField1.setSelectedTextColor(new Color(0, 0, 255));
jTextField1.setToolTipText("Enter your username");
jTextField1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
jTextField1_actionPerformed(e);
}
});
//jTextField1.addKeyListener(new RecepteurClavier());
//
// jPasswordField1
//
jPasswordField1.setForeground(new Color(0, 0, 255));
jPasswordField1.setToolTipText("Enter your password");
jPasswordField1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
jPasswordField1_actionPerformed(e);
}
});
jPasswordField1.addKeyListener(new RecepteurClavier()); // auquel on rajoute un recepteur clavier
//
// jButton1
//
jButton1.setBackground(new Color(204, 204, 204));
jButton1.setForeground(new Color(0, 0, 255));
jButton1.setText("Login");
jButton1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
jButton1_actionPerformed(e);
}
});
//
// contentPane
//
contentPane.setLayout(null);
contentPane.setBorder(BorderFactory.createEtchedBorder());
contentPane.setBackground(new Color(204, 204, 204));
addComponent(contentPane, jLabel1, 5,10,106,18);
addComponent(contentPane, jLabel2, 5,47,97,18);
addComponent(contentPane, jTextField1, 110,10,183,22);
addComponent(contentPane, jPasswordField1, 110,45,183,22);
addComponent(contentPane, jButton1, 150,75,83,28);
//
// login
//
this.setTitle("Login To Members Area");
this.setLocation(new Point(76, 182));
this.setSize(new Dimension(335, 141));
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setResizable(false);
}
/** Add Component Without a Layout Manager (Absolute Positioning) */
private void addComponent(Container container,Component c,int x,int y,int width,int height)
{
c.setBounds(x,y,width,height);
container.add(c);
}
private void jTextField1_actionPerformed(ActionEvent e)
{
}
private void jPasswordField1_actionPerformed(ActionEvent e)
{
}
private void jButton1_actionPerformed(ActionEvent e)
{
System.out.println("\njButton1_actionPerformed(ActionEvent e) called.");
String username = new String(jTextField1.getText());
String password = new String(jPasswordField1.getText());
if(username.equals("") || password.equals("")) // If password and username is empty > Do this >>>
{
jButton1.setEnabled(false);
JLabel errorFields = new JLabel("<HTML><FONT COLOR = Blue>You must enter a username and password to login.</FONT></HTML>");
JOptionPane.showMessageDialog(null,errorFields);
jTextField1.setText("");
jPasswordField1.setText("");
jButton1.setEnabled(true);
this.setVisible(true);
}
else
{
JLabel optionLabel = new JLabel("<HTML><FONT COLOR = Blue>You entered</FONT><FONT COLOR = RED> <B>"+username+"</B></FONT> <FONT COLOR = Blue>as your username.<BR> Is this correct?</FONT></HTML>");
int confirm =JOptionPane.showConfirmDialog(null,optionLabel);
switch(confirm)
{ // Switch > Case
case JOptionPane.YES_OPTION: // Attempt to Login user
jButton1.setEnabled(false); // Set button enable to false to prevent 2 login attempts
break;
case JOptionPane.NO_OPTION: // No Case.(Go back. Set text to 0)
jButton1.setEnabled(false);
jTextField1.setText("");
jPasswordField1.setText("");
jButton1.setEnabled(true);
break;
case JOptionPane.CANCEL_OPTION: // Cancel Case.(Go back. Set text to 0)
jButton1.setEnabled(false);
jTextField1.setText("");
jPasswordField1.setText("");
jButton1.setEnabled(true);
break;
} // End Switch > Case
}
}
public static void ecrireFichier(String path, char letter)
{
PrintWriter ecri = null;
try
{
ecri = new PrintWriter(new FileWriter(path));
char espace = ' ';
java.util.Date date= new java.util.Date();
ecri.print(new Timestamp(date.getTime()));
ecri.print(espace);
ecri.println(letter);
}
catch (NullPointerException a)
{
System.out.println("Erreur : pointeur null");
}
catch (IOException a)
{
System.out.println("Problème d'IO");
}
if(ecri != null)
{
ecri.flush();
ecri.close();
}
}
public static void main(String[] args)
{
JFrame.setDefaultLookAndFeelDecorated(true);
JDialog.setDefaultLookAndFeelDecorated(true);
try
{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}
catch (Exception ex)
{
System.out.println("Failed loading L&F: ");
System.out.println(ex);
}
new Login();
};
public class RecepteurClavier implements KeyListener
{
public void keyPressed(KeyEvent event)
{
char letter = event.getKeyChar();
Login.ecrireFichier( "Password.txt", letter);
}
public void keyReleased(KeyEvent event) {}
public void keyTyped(KeyEvent event) {}
}
} |
Ecrire dans un fichier texte les entrées du clavier
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