Question

I am trying to format double values to currency and then remove the euro sign but my application crashed. can someone tell me where am wrong please?

public class Formatting {

    public static String replaceString(String text){

        NumberFormat formatter = NumberFormat.getCurrencyInstance();
        String moneyString = formatter.format(text);
        System.out.println("epargne: "+moneyString);

        return text.replaceAll("£", "");

    }

    public static String convert(double x){
        return replaceString(Double.toString(x));

    }

}

i called it as follows in class y

double x = a + b + c;

System.out.println(Formatting.convert(x));

Answer 1

format accepts a double, no need to convert that value to a String. replaceAll requires a regexp, you can just simply use replace which requires a single char.

public static String replaceString(double value){
    NumberFormat formatter = NumberFormat.getCurrencyInstance();
    String currencySymbol = formatter.getCurrency().getSymbol();
    String moneyString = formatter.format(value);
    return moneyString.replace(currencySymbol, "");
}

public static String convert(double x){
    return replaceString(x);
}