import java.util.Random;
import java.util.Iterator;
import java.util.ArrayList;
import java.util.Collections;

/**
   A class to test the A11NumberedAccount class.
*/

public class A11
{


   /**
       Traverses the elements of an ArrayList of 
         A11NumberedAccounts,
         by printing each of them to <code>System.out</code>,
         using the <code>toString</code> method of the
         A11NumberedAccount class.
       @param list the ArrayList
       @throws ClassCastException if there is an element
        of the ArrayList that is not an A11NumberedAccount
   */
   
   public static void traverse(ArrayList list)             {
      Iterator it = list.iterator();
      while (it.hasNext())
        System.out.println((A11NumberedAccount) it.next());
      System.out.println();                                }



   /**
      Tests the methods of the NumberedAccount class.
      @param args not used
   */

   public static void main(String[] args)                  {
   
      Random r = new Random(11);
      ArrayList accounts = new ArrayList();
      
      accounts.add(new A11NumberedAccount(
        "Harry", 1234, 2000));
      accounts.add(new A11NumberedAccount(
        "Mary", 2345, 3000));
      accounts.add(new A11NumberedAccount(
        "Barry", 3456, 4000));
        
      for (int i=1; i<= 10; i++)
        accounts.add(new A11NumberedAccount(
          "Customer"+i,i,r.nextInt(10000)));

      System.out.println("the unsorted " +
        "collection of accounts is now:");    
      traverse(accounts);
      System.out.println();

      System.out.println("sorted by account number, " +
        " the collection is:");    
      Collections.sort(accounts);
      traverse(accounts);
      System.out.println();

      System.out.println("sorted by account holder, " +
        " the collection is:");    
      Collections.sort(accounts,
        A11NumberedAccount.getCustomerComparator());
      traverse(accounts);
      System.out.println();

      System.out.println("sorted by balance, " +
        " the collection is:");    
      Collections.sort(accounts,
        A11NumberedAccount.getBalanceComparator());
      traverse(accounts);
      System.out.println();

      A11NumberedAccount firstAccount =
        (A11NumberedAccount) accounts.get(0);
      System.out.println("The customer" +
        " with the biggest balance");
      System.out.print(" is " + 
        firstAccount.getAccountHolder());
      System.out.print(" with account #" + 
        firstAccount.getAccountNumber());
      System.out.println(" and balance $" + 
        firstAccount.getBalance());            

      firstAccount.deposit(2000);
      System.out.print("After depositing " +
        "$2000, this customer's balance is $");
      System.out.println(firstAccount.getBalance());
      firstAccount.withdraw(1000);
      System.out.print("After withdrawing " +
        "$1000, this customer's balance is $");
      System.out.println(firstAccount.getBalance());   
      System.out.println();
      
      System.out.println("test of equals & clone:");
      A11NumberedAccount accountCopy = new A11NumberedAccount(
        (String) firstAccount.getAccountHolder(),
        firstAccount.getAccountNumber(),
        firstAccount.getBalance());
      A11NumberedAccount anotherAccount = 
        (A11NumberedAccount)  firstAccount.clone();
      System.out.println(firstAccount.equals(firstAccount));   
      System.out.println(firstAccount.equals(anotherAccount));   
      System.out.println(firstAccount.equals(accountCopy));   
      anotherAccount.withdraw(5000);  
      System.out.println(firstAccount.getBalance());   
      System.out.println(anotherAccount.getBalance());   
      System.out.println(firstAccount.equals(anotherAccount));   
      System.out.println(firstAccount.equals(accountCopy));   
      System.out.println();
      
      try                                                 {
        Collections.sort(accounts);
        traverse(accounts);
        accounts.add(new String("oops!"));
        Collections.sort(accounts);
        traverse(accounts);                               }
      catch(ClassCastException e)                         {
        System.out.println("ill-formed account found" +
          " -- can't sort or traverse ");                 }
      
      }

}