Java 8 中并行流 parallelStream 正确使用方法

List integers = new ArrayList<>();
for (int i = 0; i < 1000; i++) {
    integers.add(i);
}

List strings = integers.parallelStream().collect(ArrayList::new, (arrayList, i) -> {
    arrayList.add(i.toString());
}, List::addAll);

System.out.println(strings);