How do I create books in a game of go fish?

<pre>// Programming Challenge: Go Fish Part 4
// This program shuffles a deck of cards and then deals them 

import java.util.*;
import java.io.*;

public class GoFish1 {
    public static void main(final String[] args) {
         String[] arr = { "Ace of Spades", "2 of Spades", "3 of Spades", "4 of Spades", "5 of Spades", "6 of Spades", "7 of Spades", "8 of Spades", "9 of Spades", "10 of Spades", "Jack of Spades", "Queen of Spades", "King of Spades", "Ace of Hearts", "2 of Hearts", "3 of Hearts", "4 of Hearts", "5 of Hearts", "6 of Hearts", "7 of Hearts", "8 of Hearts", "9 of Hearts", "10 of Hearts", "Jack of Hearts", "Queen of Hearts", "King of Hearts", "Ace of Diamonds", "2 of Diamonds", "3 of Diamonds", "4 of Diamonds", "5 of Diamonds", "6 of Diamonds", "7 of Diamonds", "8 of Diamonds", "9 of Diamonds", "10 of Diamonds", "Jack of Diamonds", "Queen of Diamonds", "King of Diamonds", "Ace of Clubs", "2 of Clubs", "3 of Clubs", "4 of Clubs", "5 of Clubs", "6 of Clubs", "7 of Clubs", "8 of Clubs", "9 of Clubs", "10 of Clubs", "Jack of Clubs", "Queen of Clubs", "King of Clubs" };
         ArrayList<String> deck = new ArrayList<>(Arrays.asList(arr));
        ArrayList <String> CPU = new ArrayList<String>();
      ArrayList <String> Player = new ArrayList<String>();
       ArrayList <String> TwoCards = new ArrayList<String>();
      int PlayerBook = 0;
      int CPUbook = 0;
      int Twocount=0;
      boolean PlayerTurn = true;
       boolean Pbook = false;


        System.out.println("\nPlayer's cards:");
         Random rand = new Random();
        for (int i = 0; i < 7 && deck.size() > 0; i++) {
             int randomIndex = rand.nextInt(deck.size());
             String card = deck.get(randomIndex);
             Player.add(card);
            System.out.println(card);
            deck.remove(randomIndex);
            }
            
        System.out.println("\nCPU's cards:");
        for (int i = 0; i < 7 && deck.size() > 0; i++) {
             int randomIndex = rand.nextInt(deck.size());
             String card = deck.get(randomIndex);
             CPU.add(card);
            System.out.println(card);
            deck.remove(randomIndex);      
        }
      while (deck.size() != 0)
{
  
        Scanner keyboard = new Scanner(System.in);
        System.out.println("\nWhat card would you like to ask for? (Enter 2-9, King, Ace, Jack, or Queen)");
      String checkT = keyboard.nextLine();
      int i;
      int count;
      boolean hasCard = false;
      for (count = 0; count < CPU.size();
      count++) {
       
        if (CPU.get(count).toLowerCase().contains(checkT.toLowerCase())) {
           hasCard = true;
           System.out.println(CPU.get(count));
           Player.add(CPU.get(count));
           CPU.remove(count);
           count--;
        }
      }
     
      if (hasCard == true) {
          System.out.println("\nThe CPU has that card.");
          
        }
        else {  
            System.out.println("\nGo Fish.");
            int randomI = rand.nextInt(deck.size());
            Player.add(deck.get(randomI));
            deck.remove(randomI);
            PlayerTurn = false;
            
        }
        
        
        if (PlayerTurn == false && CPU.size() > 0)
        {
        //  System.out.println("\n" + CPU.size());
          int randomID = rand.nextInt(CPU.size());
          System.out.println("The dealer asks for " + CPU.get(randomID));
        }
        
        if (CPU.size()==0)
        {
           int randomIndex = rand.nextInt(deck.size());
             String card = deck.get(randomIndex);
             CPU.add(card);
             deck.remove(card);
        }
        
System.out.println("\n"+"Cards left in deck: "+ deck.size());
System.out.println("\nPlayer's cards:");
            System.out.println(Player);

            
        System.out.println("\nCPU's cards:");

 
           System.out.println(CPU);
   
      if (Player.contains("2"))
      {
        TwoCards.add("1");
      
      if(TwoCards.size() == 4)
      {
        Pbook=true;
      }
      }
      if (Pbook== true)
      {
        System.out.println("\nYou have a book!");
        
}

if (deck.size() == 0)
{
  System.out.println("\nGame Over!");
}
if (PlayerBook>CPUbook&& deck.size()==0 || PlayerBook == 13)
{
 System.out.println("You Win!"); 
 System.out.println("Player books: " + PlayerBook);
 System.out.println("CPU books: " + CPUbook);
}
if (PlayerBook<CPUbook&& deck.size()==0 || CPUbook == 13)
{
  System.out.println("You Lose");
 System.out.println("Player books: " + PlayerBook);
 System.out.println("CPU books: " + CPUbook);
}
if (PlayerBook==CPUbook&& deck.size()==0)
{
  System.out.println("\nIts a tie");
 System.out.println("Player books: " + PlayerBook);
 System.out.println("CPU books: " + CPUbook);
} 
          }
    }
}