How does using an interface and dynamic dispatching make our coding more efficient?    Group of answer choices:   a)It means we do not have to declare the variable’s type, and instead the system will use duck typing. This will save us from typing lines of code that are just variable declarations.   b)All options are correct.   c)We can call a method, but not specify which specific type the object using the method is, instead specifying the name of the interface. Java will properly call the appropriate object’s method. This allows us to have a loop that will end up with a variable that takes on different types but all implement the same interface. This allows different objects to properly call their own method in the same line of code.

(In Java language) Create a class Called NetflixDemo  Create two objects “user1” and “user2” of the Netflix class pictured below) Set various class variables for the Netflix class using these two objects. Call various methods of Netflix class using these two objects.   public class Netflix {public String movies [] = new String[10];public String trendingTop5 [] = new String[5];public String continueWatching [] = new String[5];public String username;public String password;private boolean isAuthenticated;public double balance;public int subscriberSinceYear;public static void logininfo() {Scanner input = new Scanner(System.in);System.out.println("Enter the username");String username = input.nextLine();System.out.println("Enter the password");String password = input.nextLine();boolean isAuthenticated = true;System.out.println(isAuthenticated + " , You have successfully logged in ");System.out.println();}public static void trendingList(){Scanner input = new…

(Java) Open up Eclipse and create a new class called ArrayListPractice.java Next, copy and paste the below program into your file and run the code. Your job is to take the given code, remove all the arrays and replace them with the identical ArrayLists. There should be no arrays in your program. You will need to call the ArrayList methods as defined in the lesson notes above. Note that you will not be able to do method overloading with ArrayLists so you should assign different names to your methods. Once you have made the changes, you should get identical output as the given version of the program. Submit your program when you are finished. /**   * @author  * CIS 36B  * Activity 5.2   */ import java.util.ArrayList; import java.util.Scanner; public class ArrayListPractice {     public static void main(String[] args) {                  int scores[] = {95, 96, 97, 98, 99};         System.out.println("Integer test scores:");         print(scores);          System.out.println();…

Hi Can you help me do a, b, c and d please. Thanks for your help (: