The Generalized for Loop

• Works for ArrayLists too:
  

  ArrayList<BankAccount> accounts = . . . ;
  double sum = 0;
  for (BankAccount a : accounts)
  {
     sum = sum + a.getBalance();
  }
  

• Equivalent to the following ordinary for loop:

  double sum = 0;
  for (int i = 0; i < accounts.size(); i++)
  {
     BankAccount a = accounts.get(i);
     sum = sum + a.getBalance();
  }