移除首尾元素

import java.util.LinkedList;

public class RemoveFirstAndLast {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        LinkedList lList = new LinkedList();
        lList.add("1");
        lList.add("2");
        lList.add("3");
        lList.add("4");
        lList.add("5");
        System.out.println("LinkedList contains : " + lList);
       
        Object object = lList.removeFirst();
        System.out.println(object + " has been removed from the first index of LinkedList");
        System.out.println("LinkedList now contains : " + lList);
       
        object = lList.removeLast();
        System.out.println(object + " has been removed from the last index of LinkedList");
        System.out.println("LinkedList now contains : " + lList);
    }

}
Console：
LinkedList contains : [1, 2, 3, 4, 5]
1 has been removed from the first index of LinkedList
LinkedList now contains : [2, 3, 4, 5]
5 has been removed from the last index of LinkedList
LinkedList now contains : [2, 3, 4]