Bigdecimal value remains zero

Support
#1

Hi there,

I’m trying to multiply two bigdecimal values. If i leave this “BigDecimal exchangeRate = BigDecimal.ZERO;”, i get a null pointer exception. If i place it in my code the result of the multiplication is “0”. If i change is to Bigdecimal.TEN, the result is the value multuplied by ten. How do i get it to use the value of the field " exchangeRate"?

This is the code i use:

@Override
public void postInit(Operation item) {
amount1Field.addValueChangeListener(e -> {
BigDecimal exchangeRate = BigDecimal.ZERO;
if (e.getValue() != null && StringUtils.isBlank(amount2Field.getValue())) {
amount2Field.setValue(String.valueOf(exchangeRate.multiply(new BigDecimal(e.getValue()))));
}
});
}

It seems like the value of the “exchangeRate” is ignord.

Thanks in advance

LS

#3

Hi.

Can you explain in detail what you want to get as a result? It looks like it works clear now.

#4

Hi,

As result i want “exchangeRate” multiplied with “e.getValue”, that doesn’t happen. So if e.g. amount1Field is 100 and exchangeRate is 19, amount2Field should be 1900.

#5

What happens now if amount1Field is 100 and exchangeRate is 19, what will be in result?

#6

if " BigDecimal exchangeRate = BigDecimal.ZERO;" is in the code the result is “0” . If i change it to “BigDecimal exchangeRate = BigDecimal.TEN;” the result is “1000”.

#7

You can create BigDecimal instance with any value using constructor, for example:

BigDecimal exchangeRate = new BigDecimal(19);

or use value from any entity:

BigDecimal exchangeRate = new BigDecimal(anyEntity.getValue());

and this value will be used in multiplying.

Regards,
Nadezhda.

#8

Thanks Nadezhda,

BigDecimal exchangeRate = new BigDecimal(anyEntity.getValue());

works fine for me.

Regards,
Lloyd