public class AnotherDay
{
   public static void main( String [] args )
   {
      // Zzz...
      Java coffeeCup = null;  // The cup is empty.
      coffeeCup = new Java(); // The cup is full.
      coffeeCup.takeAGulp();  // The cup is half full... or is it half empty?
   }
}
class Java
{
   int percentFull = 100;
 
   public void takeAGulp()
   {
      percentFull /= 2;
      System.out.println( "Gulp!  Ahh..." );
      System.out.println( "("+ percentFull + "% coffee left)" );
   }
}