Creating txt file to store input username and password

Question

Hi everyone,
I'm new to java, and have been having a hard time with this code.
My goal is to allow the user to enter in their username and password which should be concatentated as a string and stored into a text file. I am unable to link the two input fields as one string of characters. I know i'm approaching this wrong, but am uncertain of where i need to begin.
Code is as follows:
/*Purpose: To allow the user to input their desired username and password
*which will be stored in a data structure for later use; for instance when
*the user wants to use the application again their username and password
*will be assigned the same/linking locations, hence they will be validated.
*inputed username and password should be stored in a text field for later use
*of validating login possbily using a search method
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
import java.lang.String.*;
public class TextFieldTest1 extends JFrame {
private JTextField userName;
private JPasswordField password;
private JLabel textFieldLabel, passwordFieldLabel;
// set up GUI
public TextFieldTest1()
super( "Please Login to AutoSync" );
Container container = getContentPane();
container.setLayout( new FlowLayout() );
// construct textfield with default sizing
userName = new JTextField( 10 );
//creating textfield label
textFieldLabel = new JLabel("Username");
container.add(textFieldLabel);
container.add( userName);
// construct passwordfield with default text
password = new JPasswordField( "Hidden text" );
passwordFieldLabel = new JLabel("Password");
container.add(passwordFieldLabel);
container.add( password );
// register event handlers
TextFieldHandler handler = new TextFieldHandler();
userName.addActionListener( handler );
password.addActionListener( handler );
setSize( 325, 100 );
setVisible( true );
}// end constructor TextFieldTest
//ADDED TO CREATE TEXT FILE OF USER INPUTS
//Code actually doesn't work, but i was thinking that where i have brooke
//if i should create another actionlistner to concatenate the userName and password nputs into one field, perhaps a login button which hold both those arrays then i can do writer.write("combinedfields")      
public static void main( String args[] )throws IOException
TextFieldTest1 application = new TextFieldTest1();
application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
// private inner class for event handling
private class TextFieldHandler implements ActionListener {
     String fileName = "SENIOR.txt" ;
FileWriter writer = new FileWriter( fileName );
writer.write(userName.addActionListener);
writer.write(password.addActionListener);
writer.close();
// process textfield events
public void actionPerformed( ActionEvent event )
String string = "";
// user pressed Enter in JTextField textField1
if ( event.getSource() == userName )
string = "userName: " + event.getActionCommand();
// user pressed Enter in JTextField passwordField
else if ( event.getSource() == password ) {
string = "password: " +
new String( password.getPassword() );
JOptionPane.showMessageDialog( null, string );
} // end method actionPerformed
} // end private inner class TextFieldHandler
//private class users to link username/password input with Array locations
private class Users{
          public String userCheck[] = new String[10];     
          public String passCheck[] = new String[10];     
private boolean validateUser(String usr, String pwd)throws IOException {
     for (int i = 0; i < userCheck.length; i++)
if (userCheck.equals(usr) && passCheck[i].equals(pwd))
return true;
               return false;
     }     //end method validateUser
}     //end class users
} // end class TextFieldTest}

Answer 1

Double Post
http://forum.java.sun.com/thread.jspa?threadID=631685&tstart=0