java - 如何在没有迭代器的情况下迭代Set / HashSet？(How to Iterate over a Set/HashSet without an Iterator?)

Question

How can I iterate over a Set / HashSet without the following?

(如何在没有以下内容的情况下迭代Set / HashSet ？)

Iterator iter = set.iterator();
while (iter.hasNext()) {
    System.out.println(iter.next());
}

  ask by user1621988 translate from so

Answer 1

You can use an enhanced for loop :

(您可以使用增强的for循环 ：)

Set<String> set = new HashSet<String>();

//populate set

for (String s : set) {
    System.out.println(s);
}

Or with Java 8:

(或者使用Java 8：)

set.forEach(System.out::println);