Easy way to convert Iterable to Collection

Question

In my application I use 3rd party library (Spring Data for MongoDB to be exact).

Methods of this library return Iterable, while the rest of my

Answer 1

Here's an SSCCE for a great way to do this in Java 8

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

public class IterableToCollection {
    public interface CollectionFactory > {
        U createCollection();
    }

    public static > U collect(Iterable iterable, CollectionFactory factory) {
        U collection = factory.createCollection();
        iterable.forEach(collection::add);
        return collection;
    }

    public static void main(String[] args) {
        Iterable iterable = IntStream.range(0, 5).boxed().collect(Collectors.toList());
        ArrayList arrayList = collect(iterable, ArrayList::new);
        HashSet hashSet = collect(iterable, HashSet::new);
        LinkedList linkedList = collect(iterable, LinkedList::new);
    }
}