SolveByJava8Stream Check Value

SolveByJava8Stream.java

import static java.util.stream.Collectors.toList;

public class SolveByJava8Stream extends ConcurrentModificationSolution {

    @Override
    public void addItemAndReIndex(List<String> roundList, String newItem) {
        System.out.println("Before roundListIdentity=" + System.identityHashCode(roundList));
        roundList = roundList
                .stream()
                .filter(item -> !item.equals(newItem))
                .map(Object::toString)
                .collect(toList());

        roundList.add(0, newItem);
        System.out.println("Result : " + roundList);
        System.out.println("After roundListIdentity=" + System.identityHashCode(roundList));
    }

    @Override
    public String solutionName() {
        return "Java8 Stream";
    }

    public static void main(String[] args) {
        SolveByJava8Stream java8Stream = new SolveByJava8Stream();
        java8Stream.solve();
    }
}