/**
 * MyDate.java
 *
 * Simple demo of methods in a class.
 *
 * Copyright 2003, Matt Gerrans.
 *
 * Turning in this code as homework is a violation of ethical principals,
 * and punishable by severe penalties, even if you change the variable
 * names.
 */
public class MyDate
{
   private int year;
 
   /**
    * This is the constructor, which will set up the year value for this
    * object.
    */
   public MyDate( int y )
   {
      year = y;
   }
 
   /** 
    * Here is the isLeapYear() method, which you can call to find out
    * whether this instance of the MyDate object is a leap year.
    */
   public boolean isLeapYear()
   {
      boolean isLeap = false;
      
 
      // Here is my somewhat questionable method of determining whether
      // the year is a leap year:
      isLeap = ((new java.util.Random()).nextInt(2) == 0 ? true : false);
 
      // Instead of my technique, you will want to replace it with your code
      // to check whether the year is really a leap year; if it is, change
      // isLeap to true.
 
      return isLeap;
   }
 
   /**
    * I also added this toString() method, to facilitate displaying 
    * information about the object at runtime.
    */
   public String toString()
   {
      return Integer.toString(year);
   }
 
   /**
    * This the the static (static means there is only one) entry point.
    * It should not be heavily used for any kind of activity specific
    * to your class.   Here it is just used as kind of a quick demo
    * of using the MyDate class.
    */
   public static void main( String[] args )
   {
      int year = 1972;
 
      // Your code here to read the year from the keyboard, or wherever.
 
      // I'll just read it from the command line, if a parameter was
      // specified.   I am foolishly throwing caution to the wind and 
      // assuming that the parameter, if specified, will be a nicely 
      // formed integer value.   This will probably be the case, one in
      // ten times and more often than not, this program will crash with
      // an ugly stack trace about some crazy thing called a
      // NumberFormatException and the user will curse my lazy bones.
      if( args.length > 0 )
         year = Integer.parseInt(args[0]);
 
      // Before you can use your MyDate object, you must create an instance
      // of it, with "new" and initialize it with the year value from above:
      MyDate myDate = new MyDate( year );
 
      if( myDate.isLeapYear() )
         System.out.println( myDate.toString() + " is a leap year." );
      else
         System.out.println( myDate.toString() + " isn't a leap year." );
   }
}