To avoid NullPointerException when using findFirst() in Java, filter the stream before calling findFirst() or use Optional#ofNullable() to wrap values in an Optional object.

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This article discusses the problem of NullPointerException in the findFirst() method and provides solutions to avoid it. It also explains the purpose of the Optional#ofNullable method.

Handling NullPointerException in findFirst() When the First Element Is Null