计算bigdecimals的百分比 [英] Compute percentage for bigdecimals

问题描述

我没有找到任何本地方法来执行此操作，因此我在帮助程序类中创建了自己的方法：

I haven't found any native method to do this, so I created my own in a helper class:

public static BigDecimal percentage(BigDecimal base, BigDecimal pct){
    return base.multiply(pct).divide(new BigDecimal(100));
}

但我不太喜欢它，我想知道API是否有东西类似。 Number类（BigDecimal的祖先）将是一个不错的地方。

But I don't quite like it, I wonder if the API has something similar. The Number class (ancestor of BigDecimal) would be a nice place.

推荐答案

随意子类 BigDecimal 并添加该方法。除此之外，你期待什么？您知道在哪里可以找到API并确认您希望使用该方法的类不会。就我个人而言，我认为功能是如此微不足道，以至于在标准API中没有太多意义。

Feel free to subclass BigDecimal and add that method. Beyond that, what do you expect? You know where to find the API and confirm that the class you would like to have that method doesn't. Personally, I'd say the functionality is so trivial that there wouldn't be much of a point in having it in the standard API.

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