Printing a double to accuracy of 2 decimal places

Question

Hi,
I have a double value and I want to print it to an accuracy of 2 decimal places. Is there any way to do this. I tried using the DecimalFormat by
doing the following
String str = Double.toString(value);
DecimalFormat dec = new DecimalFormat(str);
dec.setMaximumFractionDigits(2);
String res = dec.toString();But this doesn't seem to work. I am using java 1.4.
Thanks

Answer 1

You can use DecimalFormat but like this:
        double value = 1.345678d;
        System.out.println(value);
        DecimalFormat dec = new DecimalFormat("0.00");
        String result = dec.format(value);
        System.out.println(result);Or you can use a BigDecimal where you can specify the most appropriate rounding method:
        BigDecimal bd = new BigDecimal(value);
        bd = bd.setScale(2, BigDecimal.ROUND_HALF_UP);
        System.out.println(bd.toString());HTH,
Christian