Java 集合 从LinkedList删除第一个和最后一个元素

import java.util.LinkedList;
public class RemoveExample {

 public static void main(String[] args) {

    // Create a LinkedList
    LinkedList<String> linkedlist = new LinkedList<String>();

    // Add elements to LinkedList
    linkedlist.add("Item1");
    linkedlist.add("Item2");
    linkedlist.add("Item3");
    linkedlist.add("Item4");
    linkedlist.add("Item5");

    // Displaying Elements before remove
    System.out.println("LinkedList Elements are:");
    for(String str: linkedlist){
       System.out.println(str);
    }

    // Removing First element
    Object firstElement = linkedlist.removeFirst();
    System.out.println("\nElement removed: "+ firstElement);

    // Removing last Element
    Object lastElement = linkedlist.removeLast();
    System.out.println("Element removed: "+ lastElement);

    // LinkedList elements after remove
    System.out.println("\nList Elements after Remove:");
    for(String str2: linkedlist){
       System.out.println(str2);
    }
 }
}

LinkedList Elements are:
Item1
Item2
Item3
Item4
Item5

Element removed: Item1
Element removed: Item5

List Elements after Remove:
Item2
Item3
Item4