why is java turning integers into something less

2018-06-30 18:20:01

This question already has an answer here:

Why not use Double or Float to represent currency? 14 answers

Why do I see a double variable initialized to some value like 21.4 as 21.399999618530273? 14 answers

You're doing your calculations using double.

Please take a look on this http://floating-point-gui.de/

Also http://www.mkyong.com/java/how-do-calculate-monetary-values-in-java-double-vs-bigdecimal/

I admit, I didn't read your code, but I'm 99% sure that you're having a problem with binary datastorage.

You see, in the decimal system, 1/10 can be easily represented as 0.1. However, try 1/3, it becomes 0.33333333333333333...

In binary, 1/10 is 0.0001100110011001100110011...

Look into BigDecimal for base10 numberstorage.

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