如何在Java流集合中查找BigDecimal字段的最小值? [英] How to find minimum of BigDecimal field in collection with java streams?

问题描述

我想使用 java流迭代列表并找到BigDecimal最低价格.以下说明，但不起作用(因为min()无法接受BigDecimal.

I want to use java streams to iterate a list and find the BigDecimal minimum price. The following illustrates, but does not work (because min() cannot accept BigDecimal.

class Product {
    public BigDecimal price;
}

List<Product> products;
products.stream().min((Product) p -> p.price);

推荐答案

由于BigDecimal已经是Comparable，所以它很简单:

Since BigDecimal already is Comparable, it is as simple as :

 BigDecimal min = products
        .stream()
        .map(Product::getPrice)
        .min(Comparator.naturalOrder())
        .orElse(BigDecimal.ZERO);

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