Java GUI development question.

[Caitlin Gibson]

Hi all.
I wrote the following program a few days ago and I don't know how to
add the following features:
1). If the fname or lname textfield contains a certain string ( such as
a specific name ), create a new JButton on the frame.
2). When a student's name is selected from the combo box, lauch a new
frame with a photo of that student inside the new frame along with
several labels and corresponding textfields that contain the relevant
information.
3). Read the JPasswordField and compare it to a hard-coded value.
Here is the code:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.border.*;
public class test36 extends JFrame implements ActionListener,
                                              ItemListener
{
  private JTextField     fname,
                         lname;
  private JPasswordField  myPass;
  private JButton        login,
                          exit,
                          edit;

  private ImageIcon image;
  private JComboBox myCombo;
  public static void main( String args[] )
  {
    test36 myTest = new test36();
    myTest.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    myTest.pack();
    myTest.setVisible(true);
  }

  public test36()
  {
    setTitle("User Interface Test");
    JPanel myPanels = new JPanel();
    myPanels.setLayout( new GridLayout( 4, 1 ));
    myPanels.add( new JLabel("First Name:"));
    myPanels.add( new JLabel("Last Name:"));
    myPanels.add( new JLabel("Password:"));
    myPanels.setBackground( Color.yellow );

    JPanel myTextFields = new JPanel();
    myTextFields.setLayout( new GridLayout( 4, 1 ));
    myTextFields.add( fname = new JTextField(15));
    myTextFields.add( lname = new JTextField(15));
    myTextFields.add( myPass  = new JPasswordField(4));
    myPass.setEchoChar('!');
    myTextFields.setBackground( Color.yellow );

    JPanel p1 = new JPanel();
    p1.setLayout(new BorderLayout());
    p1.add( myPanels, BorderLayout.WEST );
    p1.add( myTextFields, BorderLayout.CENTER );
    p1.setBackground( Color.yellow );

    JPanel p2 = new JPanel();
    p2.setLayout( new FlowLayout(FlowLayout.LEFT));
    p2.add( exit = new JButton("exit"));
    exit.setToolTipText("Exits the application");
    exit.setMnemonic('e');
    p2.add( login = new JButton("login"));
    login.setToolTipText("Submit user authentication info");
    login.setMnemonic('l');
    p2.add( edit = new JButton("edit"));
    edit.setToolTipText("Edit list of students");
    edit.setMnemonic('t');
    p2.setBackground( Color.yellow );
    
    
    JPanel p3 = new JPanel();
    p3.setBackground( Color.yellow );
    p3.setLayout( new GridLayout( 4, 1));
    p3.add(myCombo = new JComboBox());
    myCombo.addItem("Caitlin Gibbons");
    myCombo.addItem("Charles Kraver");
    myCombo.addItem("Spencer Lyman");
    myCombo.addItem("Carole Kowitt");
    p3.setBackground( Color.yellow );
    
    
    getContentPane().setLayout( new BorderLayout());
    getContentPane().add(p1, BorderLayout.WEST);
    getContentPane().add(p2, BorderLayout.SOUTH);
    getContentPane().add(p3, BorderLayout.EAST);
        
    login.addActionListener( this );
    exit.addActionListener( this );
    myCombo.addItemListener( this );

  }

  public void itemStateChanged( ItemEvent e )
  {
    if( e.getSource() instanceof JComboBox )
    {
      String s = (String)e.getItem();
    }
  }
  public void actionPerformed( ActionEvent e )
  {
      String actionCommand = e.getActionCommand();
      String password;
   
      if( e.getSource() instanceof JButton )
      {
        if( "login".equals( actionCommand ))
        {
           JOptionPane.showMessageDialog(null, "Thanks" );
        }
      
      
      if( "exit".equals( actionCommand ))
         System.exit(0);
      }
    }
  }

Any help would be most appreciated,
Thanks,
-Caitlin.
(edited by Cindy to format code using [ code][ /code] tags)
[ November 26, 2002: Message edited by: Cindy Glass ]

[Cindy Glass]

1. Check the fname and lname fields by using getText() and then using a Regex expression to look for your string.
2. Do you have a database holding the student info? Assuming that you don't and you have a finite set of students you could use a case statement to check to see if the text of the selected student matches. Then it is just a matter of showing the image and whatnot.
3. Use the getPassword() method to find the array of bytes that makes up the Password.