validate if a list contains at least one value from a set

Question

I'm trying to verify if my list myList getName() contains at least one value of a set names. I created a method for it, but I'm wondering if there is a simpler way in Java.

private boolean validateMyList(List<myObject> myList, Set<String> names) {
   for(myObject obj : myList) {
      if(names.contains(obj.getName())) {
         return true;
      }
   }
   return false;
}

I guess you are hunting for some shorter code, such as `return myList.stream().anyMatch(obj -> names.contains(obj.getName()))`? — Seelenvirtuose, Nov 30 '22 at 17:02
Sidenote: Types in Java should be declared with an uppercase letter. So, it should be `MyObject`, not `myObject`. — Seelenvirtuose, Nov 30 '22 at 17:13

score 2 · Accepted Answer · answered Nov 30 '22 at 17:05

2

return myList.stream()            // Stream<myObject>
    .map(myOject::getName)        // Stream<String>
    .anyMatch(names::contains);   // boolean

That is a Stream solution, though not necessarily faster.

answered Nov 30 '22 at 17:05

Joop Eggen

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validate if a list contains at least one value from a set

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