Exceptions and Java 8 streams. Enjoy!

import org.junit.Test;

import java.util.ConcurrentModificationException;
import java.util.List;
import java.util.stream.Collectors;

import static java.util.stream.IntStream.range;

public class ConcurrentModificationExceptionTest {
    @Test(expected = ConcurrentModificationException.class)
    public void shouldThrowWhileIteratingAndRemove() throws Exception {
        final List<Integer> ls = range(1, 100).boxed().collect(Collectors.toList());
        for (Integer l : ls) {
            System.out.println(l);
            ls.remove(l);
        }

    }

    @Test(expected = ConcurrentModificationException.class)
    public void shouldThrowWhileIteratingAndRemove_StreamApi() throws Exception {
        final List<Integer> ls = range(1, 100).boxed().collect(Collectors.toList());
        ls.stream().forEach(
                l -> {
                    System.out.println(l);
                    ls.remove(l);
                });
    }
}