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

/**
 * Zeller GUI
 * Implements Zeller Congruence for calculating day of week
 *
 * @author your-name-goes-here (your-e-mail-address)
 */
public class ZellerGUI extends JFrame implements ActionListener {

    private int dayOfWeek;

    // GUI text fields for month, day and year
    private JTextField txtMonth = new JTextField("",10);
		
    // Add JTextfield declarations for txtDay and txtYear here ..


    private JTextField txtDayOfWeek = new JTextField("",10);

    // Labels for the text fields
    private JLabel lblMonth = new JLabel("Month");
    private JLabel lblOutDay = new JLabel("Day of Week");

    // Add Label declarations for lblDay and lblYear here ...


    private JButton btnCompute = new JButton ("Compute");



    public ZellerGUI() {
        

        setTitle("Zeller Congruence");
        setLocation(200, 200);
        setSize(200, 300);

        Container c = getContentPane();
        c.setBackground(Color.white);
        c.setForeground(Color.black);
        c.setLayout(new FlowLayout());
        c.add(lblMonth);
        c.add(txtMonth);

        // Add labels and text boxes for Day and Year              





	
        c.add(lblOutDay);
        c.add(txtDayOfWeek);
            
        c.add(btnCompute);
        btnCompute.addActionListener(this);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible(true);
        

    }

    public static void main(String args[]) {
        

        new ZellerGUI();
        

    }

    public void actionPerformed(ActionEvent event) {
        

        int month = Integer.parseInt(txtMonth.getText());

        // Add a statement (like the preceding) to getText() from your
        // day text field
        int day = 1; 
	    	
        //Add a statement to getText() from your year text field
        int year = 2000;

        computeDayOfWeek(month,day,year);

        txtDayOfWeek.setText(""+dayOfWeek);
        

    }

    private void computeDayOfWeek(int month, int day, int year) {

        // Insert your Zeller code here
	




        System.out.println(""+dayOfWeek); //use println for debugging 
        
    }

}