[Java基礎]LinkedHashSet集合概述和特點

練習代碼如下:

package LinkedHashSetPack;

import java.util.LinkedHashSet;

public class LinkedHashSetDemo {

    public static void main(String[] args)
    {
        LinkedHashSet<String> linkedHashSet = new LinkedHashSet<String>();

        linkedHashSet.add("hello");
        linkedHashSet.add("world");
        linkedHashSet.add("java");

        linkedHashSet.add("world");

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

}