import javax.swing.*;

public class Swinging extends JFrame {
    JTextField username = new JTextField(10);
    JPasswordField password = new JPasswordField(10);
    JTextArea comments = new JTextArea(4,15);
    JButton ok = new JButton("OK");
    JButton cancel = new JButton("Cancel");
    JLabel usernamelabel = new JLabel("Username");
    JLabel passwordlabel = new JLabel("Password");
    JScrollPane scroll = new JScrollPane(comments, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);



    public Swinging(){
        super("Button Frame");

        setSize(200,200);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel pane = new JPanel();
        password.setEchoChar((char)248);

        pane.add(usernamelabel);
        pane.add(username);
        pane.add(passwordlabel);
        pane.add(password);

        pane.add(scroll);
        pane.add(ok);
        pane.add(cancel);
        add(pane);
        setVisible(true);
    }

    public static void main(String[] args){
        Swinging f = new Swinging();
        JOptionPane.showConfirmDialog(null, "Error reading a file, want to try again?", "Input Error",
                JOptionPane.YES_NO_OPTION, JOptionPane.ERROR_MESSAGE);
        JOptionPane.showMessageDialog(null, "an asteroid destroyed earth!", "Asteroid Destruction Alert",
                JOptionPane.WARNING_MESSAGE);