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import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Calendar;
import java.text.SimpleDateFormat;

 

public class DateProjections extends JFrame implements ActionListener
{
  private static String weeks[] = {"1st","2nd","3rd","4th","Last"};
  private static String days[] = {"Sunday","Monday","Tuesday",
                         "Wednesday","Thursday","Friday","Saturday"};
  private static String months[] = {"January","February","March","April",
  "May","June","July","August","September","October","November","December"};
  private static String years[] =  {"2000","2001","2002","2003","2004",
                             "2005","2006","2007","2008","2009","2010"};
  private static JComboBox cboWeek = new JComboBox(weeks);
  private static JComboBox cboDay = new JComboBox(days);
  private static JComboBox cboMonth = new JComboBox(months);
  private static JComboBox cboYear = new JComboBox(years);
  private static JLabel selection = new JLabel("Projected date is:   00-00-0000");
  private static JButton btnGo = new JButton("Project Date");
  Calendar cal = Calendar.getInstance();
  SimpleDateFormat sdf = new SimpleDateFormat("dd MMM yyyy");

 

  public DateProjections()
  {
    super("Date Projections");
    setSize(500,300);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);
    Container frame = getContentPane();
    frame.setLayout(new BorderLayout());
    JPanel upper = new JPanel(new FlowLayout());
    btnGo.addActionListener(this);
    upper.add(cboWeek);
    upper.add(cboDay);
    upper.add(cboMonth);
    upper.add(cboYear);
    JPanel lower = new JPanel();
    lower.setPreferredSize(new Dimension(300,40));
    lower.add(btnGo);
    lower.add(selection);
    frame.add(upper,BorderLayout.NORTH);
    frame.add(lower,BorderLayout.SOUTH);
    pack();
    setContentPane(frame);
  }

 

  public void actionPerformed(ActionEvent ae)
  {
    int wk = 1 + cboWeek.getSelectedIndex();
    int dy = 1 + cboDay.getSelectedIndex();
    int mth = cboMonth.getSelectedIndex();
    int yr = 2000 + cboYear.getSelectedIndex();

 

    if(wk==0 || dy==0 || mth==-1 || yr==1999)
    {
      selection.setText("details missing");
    }
    else
    {
      if(wk == 5)
      {
        mth++;
        wk = 0;
      }
      cal.set(yr,mth,1);
      if(cal.get(cal.DAY_OF_WEEK) <= dy) wk--;
      cal.add(cal.DATE,-(cal.get(cal.DAY_OF_WEEK)-dy)+(7*wk));
      selection.setText("Projected date is:   " + sdf.format(cal.getTime()));
    }
  }

 

  public static void main(String args[])
  {
    DateProjections dp = new DateProjections();
  }
}