java8 lambda遍历集合

allQuestions.forEach(question -> {
    if (question.getType().getCode().equals(typeCode)) {
        filterQuestions.add(question);
    }
});

items.forEach((k, v) -> {
    System.out.println("Item : " + k + " Count : " + v);
    if("E".equals(k)) {
        System.out.println("Hello E");
    }
});