Java：获取NumberFormat.getCurrencyInstance（）结果的不同部分

Question

In Java, with NumberFormat.getCurrencyInstance(), I can get a formatted string representing a price. eg

NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.GERMANY);
System.out.println(nf.format(20.10)); // "20,10 €"

Is there an easy way to get the different part of this formatted string? ie something like

integerPart -> 20
decimalPart -> 10
currencySymbol -> €
decimalSeparator -> ,

Thanks!

Answer 1

You're really asking for two separate things:

1. integerPart and decimalPart belong to the input value. They can be calculated with some simple math:

    double input = 20.10; int integerPart = (int)input; // 20 int decimalPart = (int)((input - integerPart) * 100); // 10 

2. currencySymbol and decimalSeparator relate to the output value. They can be retrieved using the DecimalFormatSymbols class:

    DecimalFormatSymbols symbols = DecimalFormatSymbols.getInstance(Locale.GERMANY); String currencySymbol = symbols.getCurrencySymbol(); // € char decimalSeparator = symbols.getDecimalSeparator(); // ,