JTextField Example

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class SwingControlDemo {
   private JFrame mainFrame;
   private JLabel headerLabel;
   private JLabel statusLabel;
   private JPanel controlPanel;

   public SwingControlDemo(){
      prepareGUI();
   }
   public static void main(String[] args){
      SwingControlDemo  swingControlDemo = new SwingControlDemo();     
      swingControlDemo.showTextFieldDemo();
   }
   private void prepareGUI(){
      mainFrame = new JFrame("Java Swing Examples");
      mainFrame.setSize(400,400);
      mainFrame.setLayout(new GridLayout(3, 1));
     
      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }       
      });   
      headerLabel = new JLabel("", JLabel.CENTER);       
      statusLabel = new JLabel("",JLabel.CENTER);   
      statusLabel.setSize(350,100);

      controlPanel = new JPanel();
      controlPanel.setLayout(new FlowLayout());

      mainFrame.add(headerLabel);
      mainFrame.add(controlPanel);
      mainFrame.add(statusLabel);
      mainFrame.setVisible(true); 
   }
   private void showTextFieldDemo(){
      headerLabel.setText("Control in action: JTextField");

      JLabel  namelabel= new JLabel("User ID: ", JLabel.RIGHT);
      JLabel  passwordLabel = new JLabel("Password: ", JLabel.CENTER);
      final JTextField userText = new JTextField(6);
      final JPasswordField passwordText = new JPasswordField(6);     

      JButton loginButton = new JButton("Login");
      loginButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {    
            String data = "Username " + userText.getText();
            data += ", Password: " + new String(passwordText.getPassword());
            statusLabel.setText(data);       
         }
      });
      controlPanel.add(namelabel);
      controlPanel.add(userText);
      controlPanel.add(passwordLabel);      
      controlPanel.add(passwordText);
      controlPanel.add(loginButton);
      mainFrame.setVisible(true); 
   }
}