如何获取所有的值，而不是获取java中的第一个索引？

int[] array = {1, 2, 3, 4, 5};
for (int i = 0; i < array.length; i++) {
    int value = array[i];
    System.out.println(value);
}

List<String> list = Arrays.asList("a", "b", "c", "d");
for (String value : list) {
    System.out.println(value);
}

int[] array = {1, 2, 3, 4, 5};
Arrays.stream(array).forEach(System.out::println);

List<String> list = Arrays.asList("a", "b", "c", "d");
list.stream().forEach(System.out::println);

public void getAllValues(Object obj) {
    if (obj instanceof Object[]) {
        Object[] array = (Object[]) obj;
        for (Object element : array) {
            getAllValues(element);
        }
    } else if (obj instanceof Collection) {
        Collection<?> collection = (Collection<?>) obj;
        for (Object element : collection) {
            getAllValues(element);
        }
    } else {
        System.out.println(obj);
    }
}

// 调用递归方法
int[] array = {1, 2, 3, 4, 5};
getAllValues(array);

List<String> list = Arrays.asList("a", "b", "c", "d");
getAllValues(list);