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Editorial Team
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Asked: 2026-06-17T19:59:03+00:00

I’m making a calculation module about that accepts double or BigDecimal like this but

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I’m making a calculation module about that accepts double or BigDecimal like this but I have this problem.

double x = 2.3333333333312398;
BigDecimal big = BigDecimal.valueOf(2.3333333333312398);

I print their values

System.out.println(x);
System.out.println(big);

and the output

2.3333333333312396
2.3333333333312396

I tried to changed the value of x and big variable to 2.3333333333312395
but the output still the same. I changed it again to 2.3333333333312396 and prints the same value.

If I changed again to 2.3333333333312394 the displayed again the weird value

2.3333333333312396

What’s the cause of this problem? Thanks!

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1 Answer

  1. Editorial Team

    You’re running up against double’s limits to accuracy since you’re initializing your BigDecimal with a double literal. Instead, consider initializing your BigDecimal with a String literal, not a double literal value:

    public static void main(String[] args) {
  double x = 2.3333333333312398;
  BigDecimal big = BigDecimal.valueOf(2.3333333333312398);
  BigDecimal big2 = new BigDecimal("2.3333333333312398");

  System.out.println(x);
  System.out.println(big);

  System.out.println(big2);
}

    which returns:

    2.3333333333312396
2.3333333333312396
2.3333333333312398
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