How to display a number with always 2 decimal points using BigDecimal?

Question

I am using BigDecimal to get some price values. Requirement is something like this, what ever the value we fetch from database, the displayed valued should have 2 d

Answer 1

To format numbers in JAVA you can use:

 System.out.printf("%1$.2f", d);

where d is your variable or number

or

 DecimalFormat f = new DecimalFormat("##.00");  // this will helps you to always keeps in two decimal places
 System.out.println(f.format(d)); 

Answer 2

you can use the round up format

BigDecimal bd = new BigDecimal(2.22222);
System.out.println(bd.setScale(2,BigDecimal.ROUND_UP));

Hope this help you.

Answer 3

You need to use something like NumberFormat with appropriate locale to format

NumberFormat.getCurrencyInstance().format(bigDecimal);

Answer 4

BigDecimal.setScale would work.

Answer 5

The below code may help.

protected String getLocalizedBigDecimalValue(BigDecimal input, Locale locale) {
    final NumberFormat numberFormat = NumberFormat.getNumberInstance(locale);
    numberFormat.setGroupingUsed(true);
    numberFormat.setMaximumFractionDigits(2);
    numberFormat.setMinimumFractionDigits(2);
    return numberFormat.format(input);
}

Answer 6

BigDecimal is immutable, any operation on it including setScale(2, BigDecimal.ROUND_HALF_UP) produces a new BigDecimal. Correct code should be

        BigDecimal bd = new BigDecimal(1);
//      bd.setScale(2, BigDecimal.ROUND_HALF_UP);   bd.setScale does not change bd
        bd = bd.setScale(2, BigDecimal.ROUND_HALF_UP);
        System.out.println(bd);

output

1.00