Java collector class usage

So I am trying to make sense of this but translating into simple statement. But I am having trouble doing so.

Var is a List class that holds bunch of values. I have a vague understanding of the code. This code is grabbing values that has not been assigned from assigned and inputting it into List of unassigned. But I don't understand how to translate it into simple statement to help me understand it more clearly.

List<Var> unassigned = assigned.stream()
                .filter((Var grabNear).(!grabNear.isAssigned()))
                .collect(Collectors.toList());

This is what I have so far. Is this correct?

List<Var> unassigned = assigned;
Var grabNear;
            for(int i = 0; i < assigned.size(); ++i)
            {
                grabNear = assigned.get(i);
                if(!grabNear.isAssigned())
                {
                    unassigned.add(grabNear);
                }
            }