package bigbank; import java.util.HashMap; import java.util.Map; public class BankDaoStub implements BankDao { private long id = 0; private Map accounts = new HashMap(); public void createOrUpdateAccount(Account account) { if (account.getId() == -1) { id++; account.setId(id); } accounts.put(new Long(account.getId()), account); System.out.println("SAVE: " + account); } public Account[] findAccounts() { Account[] a = (Account[]) accounts.values().toArray(new Account[] {}); System.out.println("Returning " + a.length + " account(s):"); for (int i = 0; i < a.length; i++) { System.out.println(" > " + a[i]); } return a; } public Account readAccount(Long id) { return (Account) accounts.get(id); } }