ComputeIfAbsent.java

import java.util.*;

public class ComputeIfAbsent {
    public static void main(String[] args) {
        Map map = new LinkedHashMap();
        map.computeIfAbsent(42, ArrayList::new);
    }
}

That code doesn't compile and gives the error
ComputeIfAbsent.java:7: error: incompatible types: invalid constructor reference

Of course, since there is no ArrayList with constructor taking an Object as parameter :-)

But as you said that is the correct answer.
Am I misunderstood something?