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javanumbersprecisionbigdecimal

Convert Java Number to BigDecimal : best way

I am looking for the best way to convert a Number to a BigDecimal.

Is this good enough?

Number number;
BigDecimal big = new BigDecimal(number.toString());

Can we lose precision with the toString() method ?

Solution

  • This is fine, remember that using the constructor of BigDecimal to declare a value can be dangerous when it's not of type String. Consider the below...

    BigDecimal valDouble = new BigDecimal(0.35);
System.out.println(valDouble);

    This will not print 0.35, it will infact be...

    0.34999999999999997779553950749686919152736663818359375

    I'd say your solution is probably the safest because of that.