java 8中anyMatch和findAny的区别

Difference between anyMatch and findAny in java 8(java 8中anyMatch和findAny的区别)

问题描述

我有一个 Array 并想对其元素执行一些匹配.

I have an Array and want to perform some matching on it's element.

我知道在 java 8 中可以通过两种方式完成:

I came to know that it could be done in two ways in java 8 :

String[] alphabet = new String[]{"A", "B", "C"};

任意匹配:

Arrays.stream(alphabet).anyMatch("A"::equalsIgnoreCase);

findAny:

Arrays.stream(alphabet).filter("a"::equalsIgnoreCase)
        .findAny().orElse("No match found"));

据我所知，两者都在做同样的工作.但是，我找不到更喜欢哪一个?

As I can understand both are doing the same work. However, I could not found which one to prefer?

有人能说清楚他们俩有什么区别吗.

Could someone please make it clear what is the difference between both of them.

推荐答案

它们在内部做同样的工作，但它们的返回值不同.Stream#anyMatch() 返回 boolean 而 Stream#findAny() 返回一个匹配谓词的对象.

They do the same job internally, but their return value is different. Stream#anyMatch() returns a boolean while Stream#findAny() returns an object which matches the predicate.

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