private BigDecimal transferAmount(Account account1, Account account2, BigDecimal amount1) {
if (account1.getCurrency().equals(account2.getCurrency())) return amount1;
BigDecimal rate1 = currencyRates.get(account1.getCurrencyCode());
BigDecimal rate2 = currencyRates.get(account2.getCurrencyCode());
return amount1.multiply(rate1).divide(rate2, 0, RoundingMode.HALF_UP);
}
public SampleDataGenerator() {
currencyRates.put("rub", BigDecimal.ONE);
currencyRates.put("usd", new BigDecimal("30"));
currencyRates.put("eur", new BigDecimal("40"));
}