How to use java collections using Java (MP 9)

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package main;

/**
 *
 * @author markjasongalang
 */
import java.util.*;

public class Main {
    public static void main(String[] args) {
        System.out.println("Collections Menu: ");
        System.out.println("[1] Linked List");
        System.out.println("[2] Vector");
        System.out.println("[3] Stack");
        Scanner in = new Scanner(System.in);
        int choice = in.nextInt();
        switch (choice) {
            case 1:
                System.out.println("Linked List: ");
                LinkedList<String> string_linked_list = new LinkedList<String>();
                string_linked_list.add("This is");
                string_linked_list.add("a linked");
                string_linked_list.add("list!");
                Iterator<String> it_linked_list = string_linked_list.iterator();
                while (it_linked_list.hasNext()) {
                    System.out.print(it_linked_list.next() + " ");
                }
                System.out.println();
                break;
            case 2:
                System.out.println("Vector: ");
                Vector<String> string_vector = new Vector<String>();
                string_vector.add("This is");
                string_vector.add("a vector");
                string_vector.add("!");
                Iterator<String> it_vector = string_vector.iterator();
                while (it_vector.hasNext()) {
                    System.out.print(it_vector.next() + " ");
                }
                System.out.println();
                break;
            case 3:
                System.out.println("Stack: ");
                Stack<String> string_stack = new Stack<String>();
                string_stack.push("This is");
                string_stack.push("a stack");
                string_stack.push("!");
                string_stack.pop();
                Iterator<String> it_stack = string_stack.iterator();
                while (it_stack.hasNext()) {
                    System.out.print(it_stack.next() + " ");
                }
                System.out.println();
                break;
            default:
                System.out.println("Invalid input.");
        }
    }
}