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Asked: 2026-05-23T14:57:10+00:00

I have two lists: List<SomeObject> objectList; List<String> stringList; While SomeObject has a member name

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I have two lists:

  1. List<SomeObject> objectList;
  2. List<String> stringList;

While SomeObject has a member name which is of type String.
What is the best way to check if stringList contains a string that is not a name of any someObject in objectList?

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1 Answer

  1. Editorial Team

    Iterate through the objects in objectList and add each name to a Set<String> (let’s call it nameSet). Then call nameSet.containsAll(stringList).

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