Finish writing the totalLetters method below so that it returns the number of letters for all the strings in wordList. The main method below will test your code to check that you solved it correctly.  import java.util.*;  public class StringFormatter  {  /** Returns the total number of letters in wordList.  * Precondition: wordList contains at least two words, consisting of letters only.  */  public static int totalLetters(List wordList)  {  }  public static void main(String[] args)  {  List myWords = new ArrayList();  myWords.add("A");  myWords.add("frog");  myWords.add("is");  System.out.println("Should print 7 and prints: " + totalLetters(myWords));  Listwords2 = new ArrayList();  words2.add("Hi");  words2.add("Bye");  System.out.println("Should print 5 and prints: " + totalLetters(words2));  }  }

In Java please help with the following:   Sees whether this list is empty.@return True if the list is empty, or false if not. */ public boolean isEmpty(); } // end ListInterface Hint:Node class definition should look something like: public class Node<T> { T element; Node next; Node prev; public Node(T element, Node next, Node prev) { this.element = element;this.next = next;this.prev = prev; } }

The play method in the Player class of the craps game plays an entire game without interaction with the user. Revise the Player class so that its user can make individual rolls of the dice and view the results after each roll. The Player class no longer accumulates a list of rolls, but saves the string representation of each roll after it is made. Add new methods rollDice, getNumberOfRolls, isWinner, and isLoser to the Player class. The last three methods allow the user to obtain the number of rolls and to determine whether there is a winner or a loser. The last two methods are associated with new Boolean instance variables (winner and loser respectively). Two other instance variables track the number of rolls and the string representation of the most recent roll (rollsCount and roll). Another instance variable (atStartup) tracks whether or not the first roll has occurred. At instantiation, the roll, rollsCount, atStartup, winner, and loser variables are set to their appropriate…

This is using Data Structures in Java