public class Account {
   int balance;

   Account(int openingBalance) {
      balance = openingBalance;
   }

   public void deposit(int dollars) {
      balance = balance + dollars;
   }

   public boolean withdraw(int dollars) {
      if (balance < dollars)
         return false;
      else {
         balance = balance - dollars;
         return true;
      }
   }

   public boolean transfer (int dollars, Account destination) {
      if (withdraw(dollars)) {
         destination.deposit(dollars);
         return true;
         }
      else
         return false;
   }

   public String toString() {
      return ("$" + balance + ".00");
   }
}