在java中将对象添加到linkedlist/arraylist

import java.util.LinkedList;

public class Main {
    public static void main(String[] args) {
        LinkedList<String> list = new LinkedList<String>();
        list.add("one");
        list.addFirst("first");
        list.addLast("last");

        System.out.println(list);
    }
}

import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        ArrayList<String> list = new ArrayList<String>();
        list.add("one");
        list.ensureCapacity(10);
        list.add("two");

        System.out.println(list);
    }
}