Java 8 Stream to find element in list

Question

I have the following class:

public class Item {
    int id;
    String name;
    // few other fields, contructor, getters and setters
}

I have

Answer 1

You can try use something like this:

ids.forEach(id -> 
    list.stream()
    .filter(p -> p.getId() == id)
    .findFirst()
    .ifPresent(p -> {
        // do stuff here
    });
);

Optional here shows that your filter method can return a empty stream, so if you call findFirst it can find one or zero elements.