I have to integrate my web application with a payment gateway. I want to input total amount in USD and then convert it into Cents as my payment gateway library accepts amount in Cents (of type Integer). I found that Big Decimal in java is best way for manipulation of currency. Currently I take input as say USD 50 and convert it to Integer like this:

BigDecimal rounded = amount.setScale(2, BigDecimal.ROUND_CEILING);
BigDecimal bigDecimalInCents = rounded.multiply(new BigDecimal("100.00"));
Integer amountInCents = bigDecimalInCents.intValue();

Is this the correct way of converting USD to Cents or I should do it in some other way?