/**
   This class tests the DataSet class.
*/
public class DataSetTest
{
   public static void main(String[] args)
   {
      Measurable [] accounts = { new BankAccount2(0),
                                 new BankAccount2(10000),
                                 new BankAccount2(2000)   } ;
      
      Measurable max ;   // will point to object with largest measure
      
      // create DataSet for bank accounts
      DataSet data = new DataSet(accounts) ;
      
      System.out.println("Average balance = " + data.getAverage());
      max = data.getMaximum();
      System.out.println("Highest balance = " + max.getMeasure());

      // Play it, Sam.  Play it again.
      
      Measurable [] coins = { new Coin(0.25, "quarter"),
                              new Coin(0.1, "dime"),
                              new Coin(0.05, "nickel")  } ;
 
      // create new DataSet for coins
      data = new DataSet(coins);

      System.out.println("\nAverage coin value = " + data.getAverage()) ;
      max = data.getMaximum();
      System.out.println("Highest coin value = " + max.getMeasure()) ;
      
      // Note to students: following is an example of a "downcast" of object
      // max from Measurable to Coin.  This is required because method
      // getName() is present in Coin class but not in Measurable interface
      
      System.out.println("Coin with greatest value is a " +
                         ((Coin)max).getName()) ;
   }
}

/* program output:

Average balance = 4000.0
Highest balance = 10000.0

Average coin value = 0.13333333333333333
Highest coin value = 0.25
Coin with greatest value is a quarter

*/