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

public class OddEven extends JFrame implements ActionListener {
    JButton[] buttons = new JButton[15];
    JLabel label = new JLabel();
    Container contentPane = getContentPane();
    
    public OddEven() {
        contentPane.setLayout(new GridLayout(4,4));
        for(int i = 0; i < 15; i++) {
            buttons[i] = new JButton(Integer.toString(i));
            buttons[i].addActionListener(this);
            contentPane.add(buttons[i]);
        }
        
        // points should not be taken off is the student does not set the alignment
        label.setHorizontalAlignment(JLabel.CENTER);
        contentPane.add(label);
    }
        
    public void actionPerformed(ActionEvent e) {
        int num = Integer.parseInt(e.getActionCommand());
        if(num%2 == 1) {
            label.setText("Odd");
        } else {
            label.setText("Even");
        }
    }
    
    
    public static void main(String[] args) {
        JFrame f = new OddEven();
        f.pack();
        f.setVisible(true);
    }
}