//  BankBetter.java   Copyright (c) 2005 Kari Laitinen

//  http://www.naturalprogramming.com

//  2004-10-03  File created.
//  2005-02-05  Last modification.

/*  In the javafiles3 folder, there are three .java files
    which contain a class named BankAccount. These files
    are BankSimple.java, BankBetter.java, and BankVirtuals.java.
    Because the BankAccount class is not the same class
    in BankSimple.java as in BankBetter.java and BankVirtuals.java,
    it is possible that you encounter problems when you
    compile and run these programs. Therefore, I would like
    to advise that, before you attempt to run any of the mentioned
    programs, you compile the program before running it.

    One possible problem that can occur is that program
    BankSimple.java cannot be run after BankBetter.java has
    been compiled. The reason for this is that the compilation of
    BankBetter.java (or BankVirtuals.java) replaces the
    BankAccount.class file produced by the compilation of
    BankSimple.java with a different BankAccount.class file.
*/

class  BankAccount
{
   String  account_owner ;
   long    account_number ;
   double  account_balance ;

   public BankAccount( String  given_account_owner,
                       long    given_account_number,
                       double  initial_balance )
   {
      account_owner    =  given_account_owner ;
      account_number   =  given_account_number ;
      account_balance  =  initial_balance  ;
   }

   public void show_account_data()
   {
      System.out.print( "\n\nB A N K   A C C O U N T   D A T A : "
                     +  "\n   Account owner :  "  +  account_owner
                     +  "\n   Account number:  "  +  account_number
                     +  "\n   Current balance: "  +  account_balance ) ;
   }

   public void deposit_money( double amount_to_deposit )
   {
      System.out.print( "\n\nTRANSACTION FOR ACCOUNT OF " +  account_owner
                     +  " (Account number " +  account_number  + ")" ) ;
      System.out.print( "\n   Amount deposited: "  +  amount_to_deposit
                     +  "\n   Old account balance: "  +  account_balance ) ;
      account_balance  =  account_balance  +  amount_to_deposit ;
      System.out.print( "   New balance: "  +  account_balance  ) ;
   }

   public void withdraw_money( double amount_to_withdraw )
   {
      System.out.print( "\n\nTRANSACTION FOR ACCOUNT OF " +  account_owner
                     +  " (Account number " +  account_number  + ")" ) ;

      if ( account_balance  <  amount_to_withdraw )
      {
         System.out.print("\n   -- Transaction not completed: "
                  + "Not enough money to withdraw " + amount_to_withdraw ) ;
      }
      else
      {
         System.out.print("\n   Amount withdrawn:    "  +  amount_to_withdraw
                     + "\n   Old account balance: "  +  account_balance ) ;
         account_balance  =  account_balance  -  amount_to_withdraw ;
         System.out.print("   New balance: "  +  account_balance ) ;
      }
   }

   public void transfer_money_to( BankAccount  receiving_account,
                                  double       amount_to_transfer )
   {
      System.out.print( "\n\nTRANSACTION FOR ACCOUNT OF " +  account_owner
                     +  " (Account number " +  account_number  + ")" ) ;

      if ( account_balance  >=  amount_to_transfer )
      {
         receiving_account.account_balance  =
            receiving_account.account_balance  +  amount_to_transfer ;

         System.out.print(
               "\n   " + amount_to_transfer + " was transferred to "
             +  receiving_account.account_owner  +  " (Account no. "
             +  receiving_account.account_number +  ")."
             +  "\n   Balance before transfer: " +  account_balance ) ;
         account_balance  =  account_balance  -  amount_to_transfer ;
         System.out.print( "   New balance:  " +  account_balance ) ;
      }
      else
      {
         System.out.print( "\n   -- Not enough money for transfer." ) ;
      }
   }
}

class BankBetter
{
   public static void main( String[] not_in_use )
   {
      BankAccount  jazz_player_account  =
                       new  BankAccount( "Louis Armstrong", 121212, 0 ) ;
      BankAccount  moon_walker_account  =
                       new  BankAccount( "Neil Armstrong",  191919,
                                                            7777.77 ) ;
      jazz_player_account.deposit_money( 3333.33 ) ;

      jazz_player_account.withdraw_money( 4444.44 ) ;

      moon_walker_account.transfer_money_to( jazz_player_account,
                                             2222.22 ) ;

      moon_walker_account.show_account_data() ;
      jazz_player_account.show_account_data() ;
   }
}