DayOfWeek_project.java

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
import java.util.*;
import java.text.*;

public class DayOfTheWeekService
{
 JLabel outputLabel;
 JComboBox month;
 JTextField day;
 JTextField year;

public JPanel getGuiPanel() 
 {

 JPanel panel = new JPanel();
 JButton button = new JButton("Let's do it!");
 button.addActionListener(new DoItListener());
 outputLabel = new JLabel("Date appears here"); 
 DateFormatSymbols dateStuff = new DateFormatSymbols(); 
 month = new JComboBox(dateStuff.getMonths());
 day = new JTextField(8);
 year = new JTextField(8);
 JPanel inputPanel = new JPanel(new GridLayout(3,2));
 inputPanel.add(new JLabel("Month"));
 inputPanel.add(month);
 inputPanel.add(new JLabel("Day"));
 inputPanel.add(day);
 inputPanel.add(new JLabel("Year")); 
 inputPanel.add(year);
 panel.add(inputPanel);
 panel.add(button);
 panel.add(outputLabel);
 return panel;
 }

 public class DoItListener implements ActionListener
 {
 public void actionPerformed(ActionEvent ev)
 {

 int monthNum = month.getSelectedIndex(); 
 int dayNum = Integer.parseInt(day.getText());
 int yearNum = Integer.parseInt(year.getText());
 Calendar c = Calendar.getInstance();
 c.set(Calendar.MONTH, monthNum);
 c.set(Calendar.DAY_OF_MONTH, dayNum);
 c.set(Calendar.YEAR, yearNum);
 Date date = c.getTime();
 String dayOfWeek = (new SimpleDateFormat(“EEEE”)).format(date);
 outputLabel.setText(dayOfWeek); 

 }
 } 
}