Example for using two swing dialogs to capture login credentials

CredentialsDialog.java

import javax.swing.*;


public class CredentialsDialog {

   private String _email;
   private String _password;

   public String getEmail() {
      return _email;
   }

   public String getPassword() {
      return _password;
   }

   public void setEmail( String email ) {
      _email = email;
   }

   public void setPassword( String password ) {
      _password = password;
   }

   public void show() {
      JTextField textField = new JTextField();
      int okOption = JOptionPane.showConfirmDialog(null, textField, "email", JOptionPane.OK_CANCEL_OPTION,
            JOptionPane.PLAIN_MESSAGE);
      if ( okOption == JOptionPane.OK_OPTION ) {
         final String email = new String(textField.getText());
         // validation can be done here
         _email = email;
      }

      JPasswordField passwordField = new JPasswordField();
      okOption = JOptionPane.showConfirmDialog(null, passwordField, "password", JOptionPane.OK_CANCEL_OPTION,
            JOptionPane.PLAIN_MESSAGE);
      if ( okOption == JOptionPane.OK_OPTION ) {
         final String password = new String(passwordField.getPassword());
         _password = password;
      }
   }

}