I want to use java stream to iterate the list and find the lowest price of BigDecimal. The following instructions, but it doesn't work (because min() can't accept BigDecimal.

class Product {public BigDecimal price;}Listproducts;products.stream().min((Product) p -> p.price);

Solution:

Since BigDecimal is already Comparable, it is very simple:

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

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