[HELP]how to create username in file txt after user fill the username

how to create username in file txt after user fill the username and pa

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#1 stevenlean890  Icon User is offline

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[HELP]how to create username in file txt after user fill the username

Post icon  Posted 07 April 2009 - 10:35 AM

how to create username in file txt after user fill the username and password?




 
import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

 

 

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);

}

 

});

//

// 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);

}

 

});

//

// 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 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();

};

}


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Replies To: [HELP]how to create username in file txt after user fill the username

#2 KYA  Icon User is offline

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Re: [HELP]how to create username in file txt after user fill the username

Posted 07 April 2009 - 12:53 PM

Whitespace overkill.

Where is your File object? Perhaps a FileReader/Writer? Could you be a bit more specific?
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