HashSet traversal methods

HashSet traversal methods

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

public class Test {
    public static void main(String[] args) {
        Set<String> set = new HashSet<>();
        set.add("Geeks");
        set.add("for");
        set.add("Geeks");
        System.out.println("迭代器：");
        for (Iterator it = set.iterator(); it.hasNext(); ) {
            System.out.println(it.next());
        }
        System.out.println("增强for循环：");
        for (String str : set) {
            System.out.println(str);
        }
        System.out.println("forEach方法：");
        set.forEach((s) -> System.out.println(s));
    }
}

Iterator:
Geeks
for
Enhanced for loop:
Geeks
for
forEach method:
Geeks
for