在Java中访问Treeset中的下一个元素

Question

Is there any way to access the successor or the predecessor of an element in Treeset of Java. Or is there any way of getting the iterator of a particular element so that we can use iterator.next() to get the next element.

Answer 1

use higher/lower

with the TreeSet set

is set.higher(e) like e.next() and set.lower(e) like e.prev()

Answer 2

您可以使用iterator（）方法获取特定TreeSet的迭代器，并且可以使用descendingIterator（）方法检索反向迭代器。