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

public class SampleTextField {

	public static void main(String args[]) {
		JFrame application = new JFrame(
				"JTextField and JPasswordField Demonstration");
		application.setLayout(new FlowLayout());

		// construct textfield with default sizing
		JTextField textField = new JTextField(10);
		application.add(textField);
		textField.addActionListener(new TextFieldHandler("Text box #1"));

		// construct textfield with default text
		textField = new JTextField("Enter text here");
		application.add(textField);
		textField.addActionListener(new TextFieldHandler("Text box #2"));

		// construct textfield with default text and
		// 20 visible elements and can't be modified
		textField = new JTextField("Uneditable text field", 20);
		textField.setEditable(false);
		application.add(textField);
		textField.addActionListener(new TextFieldHandler("Text box #3"));

		// construct textfield with default text
		JPasswordField passwordField = new JPasswordField("Hidden text");
		application.add(passwordField);
		passwordField.addActionListener(new PasswordFieldHandler());

		application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		application.setSize(325, 100);
		application.setVisible(true);
	}

}

class TextFieldHandler implements ActionListener {
	private String name;

	TextFieldHandler(String name) {
		this.name = name + ": ";
	}

	// process text field events
	public void actionPerformed(ActionEvent event) {
		String msg = name + event.getActionCommand();
		JOptionPane.showMessageDialog(null, msg);
	}
}

class PasswordFieldHandler implements ActionListener {

	public void actionPerformed(ActionEvent event) {
		JPasswordField pwd = (JPasswordField) (event.getSource());
		String msg = "passwordField: " + new String(pwd.getPassword());
		JOptionPane.showMessageDialog(null, msg);
	}

}

/*******************************************************************************
 * Based on example code from Deitel & Associates, Inc. Prentice Hall. (2002)
*******************************************************************************/