Working with LinkedList
Now you will create a shopping list as a LinkedList (vs ArrayList) and perform the same types of add/remove of String objects to the shopping list. This allows you to see how LinkedList and ArrayList share the same List interface and are polymorphic in their behavior.
Cet exercice fait partie du cours
Data Types and Exceptions in Java
Instructions
- Import
LinkedListfor use in the application. - Construct a new
LinkedListofStrings and set theshopListvariable to it. - Add
"eggs"to the end of the shopping list. - Add a second
"milk"to the beginning of the shopping list.
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
// Import LinkedList
import java.____.____;
public class Shopping {
public static void main(String[] args) {
// Create a LinkedList of Strings using parameterized constructor
____<____> shopList = ____ ____<____>();
shopList.addLast("milk");
// Add eggs to the end of the list
shopList.____("____");
shopList.addLast("bread");
// Add milk to the beginning of the list again
shopList.____("____");
System.out.println(shopList);
shopList.set(3,"rye-bread");
shopList.remove("milk");
System.out.println(shopList);
System.out.println(shopList.size());
}
}