CODEWITHSUNDEEP
javabigdecimal
en Peris
en Peris

Reputation: 1717

How to divide with BigDecimals

I want to divide BigDecimals, 1 / 14819.79865821543, but the result is 0 instead of 0.00006748

where coinRateInUSDWalletTo = 14819.79865821543 and amount = 1

BigDecimal numberOfCoinsToTransfer = amount.divide(
    new BigDecimal(coinRateInUSDWalletTo),
    RoundingMode.HALF_UP);

Upvotes: 0

Views: 74

Answers (2)

LppEdd
LppEdd

Reputation: 21104

You have to specify a scale for the BigDecimal.

final BigDecimal coinRateInUSDWalletTo = new BigDecimal("14819.79865821543");
final BigDecimal result = BigDecimal.ONE.divide(
    coinRateInUSDWalletTo,
    10 /* Scale */,
    RoundingMode.HALF_UP
);

Note also the use of BigDecimal.ONE. No need to create another one (lol).

Upvotes: 2

bUff23
bUff23

Reputation: 332

You forgot to give the scale.

Following is the declaration for BigDecimal.divide() method.

public BigDecimal divide(BigDecimal divisor, int scale, RoundingMode roundingMode)

If you specify scale 8 then you will get your desired answer: 0.00006748

 BigDecimal numberOfCoinsToTransfer = amount.divide(new BigDecimal 
 (coinRateInUSDWalletTo),8, RoundingMode.HALF_UP);

Upvotes: 2

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