Search code examples
javabigdecimal

Get bigdecimal value with scale

I have a string which has value 7. I need to convert this value in big decimal equivalent 7.000000. I tried BigDecimal(String val) and BigDecimal(BigInteger val, MathContext mc) constructors of BigDecimal but that did not work they all return 7. How can I get 7.000000?

Solution

  • You can use DecimalFormat to format the output. There is no way to store the unnecessary precision in the BigDecimal object though.

    public static void main(String[] args) {
    BigDecimal seven = new BigDecimal(7);
    BigDecimal sevenWithDecimals = new BigDecimal("7.12");
    DecimalFormat decF = new DecimalFormat("#.000000");
    
    System.out.println(decF.format(seven.doubleValue()));
    System.out.println(decF.format(sevenWithDecimals.doubleValue()));
}

    output

    7.000000

    7.120000