如何在Java 8中比较两个流

static void assertStreamEquals(Stream<?> s1, Stream<?> s2){    Iterator<?> iter1 = s1.iterator(), iter2 = s2.iterator();    while(iter1.hasNext() && iter2.hasNext())        assertEquals(iter1.next(), iter2.next());    assert !iter1.hasNext() && !iter2.hasNext();}