How to check if any of multiple elements are in a List in a convenient way?

Question

I'm trying to write the following condition:

if(javaList.contains("aaa")||javaList.contains("abc")||javaList.contains("abc")) {
    //do something
}

How can I do it in a better way?

Answer 1

It's usually more efficient to run contains on a Set than on a List. Therefore I suggest you create a Set of the elements you want to test, and then stream over the List to see if any of its elements matches:

How about:

if (javaList.stream().anyMatch(e -> Set.of("aaa","abc","def").contains(e)))