Tools.java

package net.olemartin.tools;

import com.google.common.collect.Lists;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collector;

public class Tools {

    public static <T> Collector<T, List<T>, List<T>> inReverse() {
        return Collector.of(
                ArrayList::new,
                (l, t) -> l.add(t),
                (l, r) -> {l.addAll(r); return l;},
                Lists::<T>reverse);
    }
}