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

public class DollarsDialogs extends JFrame 
    implements ActionListener {

    private JButton button;

    public static void main(String[] args) {
        DollarsDialogs frame = new DollarsDialogs();
        frame.setSize(400, 300);
        frame.createGUI();
        frame.show();
    }

    private void createGUI() {
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        Container window = getContentPane();
        window.setLayout(new FlowLayout() );

        button = new JButton("Press me");
        window.add(button);
        button.addActionListener(this);
    }
 public void actionPerformed(ActionEvent event) {
        int totalCents;
        int dollars;
        int centsRemaining;
        String totalCentsString;

        totalCentsString = JOptionPane.showInputDialog(
            "Enter your amount, in cents");
        totalCents = Integer.parseInt(totalCentsString);     
        dollars = totalCents / 100;
        centsRemaining = totalCents % 100;
        JOptionPane.showMessageDialog(null,
            totalCentsString + " cents breaks down into:\n" + 
            dollars + " dollars\n" + 
            centsRemaining + " cents.");
    }
}