COnvert £'s to $'s

Hi may seem a bit of a dumb question but does anybodyknow some simple Java cod开发者_如何学Goe to convert uk £'s to us $'s? Thanks!

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I think you need to consume a web-service which can Provide real-time currency foreign exchange information and calculations.

example http://www.xignite.com/xCurrencies.asmx?WSDL

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String currency = "£100";

currency = currency.replace( '£', '$' );

:)

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If you've got the £/$ rate, just do 100$ * £/$ rate = x £. Note that for financial calculations it is generally advisable to use BigDecimal, although in that simple case the precision errors should not be that big a problem.

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Just a simple calculation will do:

1 U.S. dollar = 0.6201935 British pounds (Taken from Google)

var exchangerate = 0.6201935;
var dollars = 10;
var pounds = dollars * exchangerate ;

or

var exchangerate = 0.6201935;
var pounds = 10;
var dollars = pounds / exchangerate ;

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Actually that rate of exchange may vary day to day so there are some websrvcies which will provide you day to day change of exchange rate. Please adopt those.

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The change rate for GBPUSD is usually quoted as how many dollars you get for one sterling. This could be 1.61162.

double rate = 1.61162;
double dollars = 10;
double pounds = round(dollars / rate, 2); // round to two decimal places

or

double pounds = 10;
double dollars = round(pounds * rate, 2);

You can use BigDecimal, but the process is the same.

Exchange rates can change many times per second. Its also worth noting that you get a different rate depending on whether you are buying or selling dollars. i.e. if you buy dollars and then sell them you usually won't get as much money back.