// Today.java
//
// Applet to display the day of week, month, day, and year based on the current date.
// Created November 7, 2012, by  Rick Wagner.
//
// Last updated November 9, 2012 by Rick Wagner.
// Version history:
// Version 1.01, original applet.
// Version 1.02, Simplifies code by using WEEK_OF_YEAR field of Calendar. November 8, 2012.
// Version 1.03, Simplifies code by consolidating use of some objects. November 9, 2012.
//
// Copyright 2012, all rights reserved. 

import java.applet.*;
import java.awt.*;                                                      // For Graphics
import java.util.*;                                                     // For Calendar
import java.text.*;                                                     // For DateFormat

public class Today extends Applet
{
  // Only constructors can run here

  private String sVersionNumber = "1.03";                               // String constructor.
  private String sCompiledDate = "November 9, 2012";
  private Dimension dApplet = null;                                     // Size of the applet (set in HTML code).
  private String sDate = null;                                          // Date string for writing in a label
  private String sWeekOfYear = null;

  // Labels for the GUI:
  private Label lblDisplay01 = null;                                    // First display label
  private Label lblDisplay02 = null;                                    // Second display label
  private Label lblDisplay03 = null;                                    // Third display label

  private Calendar cToday = Calendar.getInstance();                     // Calendar initialized with now information.
  private final int iWeek = cToday.get(Calendar.WEEK_OF_YEAR);          // Week of the year (1 - 52)
  private Date dtDate = cToday.getTime();                               // getTime() returns a Date object for the format() functions
  private DateFormat df = DateFormat.getDateInstance();                 // For the date string, e.g. "Nov 7, 2012"
  private SimpleDateFormat sdf = null;                                  // For getting the day of the week in string format
  private String sDateFormat = "EEEE";                                  // Four E format for day of week

  //Initialize the applet and set some object instances:
  public void init()
  {
    // Any code can run here

    System.out.println("'Today' applet version number " + sVersionNumber); // For the Java console
    System.out.println("Compiled " + sCompiledDate);
    System.out.println("Copyright 2012 by Rick Wagner, all rights reserved");

    // Set the applet background color to blend with light gray (25% = c0c0c0) browser background:
    setBackground(Color.lightGray);

    dApplet = getSize();                                                 // So the applet knows how big it is, from the calling HTML code

    // Convert the week of the year from integer to String:
    sWeekOfYear = Integer.toString(iWeek);

    sDate = df.format(dtDate);                                           // 
    sdf = new SimpleDateFormat(sDateFormat);                             // Four E format (for full word, e.g. "Wednesday")

    lblDisplay01 = new Label("Today is " + sdf.format(dtDate), Label.CENTER);
    lblDisplay02 = new Label(sDate, Label.CENTER);
    lblDisplay03 = new Label("This is week " + sWeekOfYear + " of the year", Label.CENTER);

    add(lblDisplay01);
    add(lblDisplay02);
    add(lblDisplay03);

  } // End of init()

  // Code for displaying images or drawing in the applet frame
  public void paint(Graphics g)
  {
    // Draw a recessed frame around the applet border. Designed for gray-on-gray browser background.
    g.setColor(Color.black);
    g.drawLine(0, 0, dApplet.width - 1, 0);
    g.drawLine(0, 0, 0, dApplet.height - 1);
    g.setColor(Color.white);
    g.drawLine(0, dApplet.height - 1, dApplet.width - 1, dApplet.height - 1);
    g.drawLine(dApplet.width - 1, 1, dApplet.width - 1, dApplet.height - 1);

  } // End of paint()

} // End of Applet class Today