Money calculation using Java

Hi,
I have problem with calculating the total amounts. I am not sure what's wrong with the below code snippet, could anyone help me please.
If the value of authDoubleAmount in line 3 of code below is 34.8, by casting to long it returns 3479. I am loosing the precession of value 01 after the decimal point. How do I get 3480 instead of 3479.
BigDecimal authBigDecimalAmount =authMoneyAmount.getRoundedValue(2, BigDecimal.ROUND_HALF_DOWN);
double authDoubleAmount = authBigDecimalAmount.doubleValue();
long authLongAmount = (long) (authDoubleAmount * 100);
Thanks

If you are working with money, you SHOULD NEVER use float or double, for they represent numbers in a non continuous way (there are numbers lacking, that they cannot hold) , you should work with them through the BigDecimal mehtods.
May the code be with you.

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