java Java双乘解释？
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Java Double Multiplication explanation?
提问by NightStrider
I recently tested something out that I heard using the following code
我最近使用以下代码测试了我听到的一些东西
public static void main(String[] args) {
double x = 4.35 * 100;
System.out.println(x);
}.
public static void main(String[] args) {
double x = 4.35 * 100;
System.out.println(x);
}.
I am interested as to why this produces 434.99999999999994 rather than 435.0 . Thanks
我很感兴趣，为什么这会产生 434.99999999999994 而不是 435.0 。谢谢
回答by Arnaud Denoyelle
when you type
当你打字时
double x = 4.35;
x is not stored as-is. It is stored in a approaching form (probably 4.349999999 in this case).
x 未按原样存储。它以接近的形式存储（在这种情况下可能是 4.349999999）。
If you want exact result, please use BigDecimal.
如果您想要确切的结果，请使用BigDecimal。
