showing complete value of double in java without scientific notation

Question

double d = 5000000000000000000034534534d;
System.out.println(String.valueOf(d)); // prints 5.0E27

Now, I want to display complete number instead of scientific notation.

As a fix, I have added new Bigdecimal which works fine till 10-12 digits not for big numbers.

System.out.println(new BigDecimal(d).toString()) // prints 4999999999999999791559868416

which is not same as double value. Need a solution to print correct number as double till 25 digits.

`4999999999999999791559868416` ***is*** the real value of `d`. — assylias, Apr 02 '15 at 12:35
@Sunny that is not representable as a double - if you need precision use BigDecimal (or BigInteger if the number is an integer). — assylias, Apr 02 '15 at 12:37
@Manu this value is calculated from lot of sources. I have added a simple variable here to reduce complexity while asking this question. — Sunny, Apr 02 '15 at 12:37
@assylias: I did not understand your comment. Why that is real value of `d`? — Parth Soni, Apr 02 '15 at 12:38
@Parth that number is very large and can't be represented exactly as a double - so it is "rounded" to the closest integer that can. — assylias, Apr 02 '15 at 12:39

score 1 · Answer 1 · edited May 23 '17 at 12:13

1

Your double value contains way too many significant digits and it can't be stored into a double.

You need to use a BigDecimal.

edited May 23 '17 at 12:13

Community

answered Apr 02 '15 at 12:58

abarisone

1 Answers1