help making war card game

Alright, so I'm making the card game war in java and for some reason when b>d and b<d it's not adding and removing the elements from the arrays. I know I have 52 cards in each deck, I'll fix that.

Also, any tips on a simpler way to do things when b==d? (tie between cards) Thanks in advance, this has been bugging me

import java.util.ArrayList;
import java.util.Scanner;
import java.io.*;
import java.util.Random;

public class war

{

public static void printYourCard(ArrayList a, int b)
{
if(a.get(b).equals(11))
System.out.println("Jack");
else if(a.get(b).equals(12))
System.out.println("Queen");
else if(a.get(b).equals(13))
System.out.println("King");
else if(a.get(b).equals(14))
System.out.println("Ace");
else
System.out.println(a.get(b));
}
public static void printOppCard(ArrayList a, int b)
{
if(a.get(b).equals(11))
System.out.println("Jack");
else if(a.get(b).equals(12))
System.out.println("Queen");
else if(a.get(b).equals(13))
System.out.println("King");
else if(a.get(b).equals(14))
System.out.println("Ace");
else
System.out.println(a.get(b));
}

public static void main(String args[])
{

Scanner cards = null;

try
{
// Create a scanner to read the file, file name is parameter
cards = new Scanner (new File("C:\\Users\\Phil\\Desktop\\cards.txt"));
}
catch (FileNotFoundException e)
{
System.out.println ("File not found!");
// Stop program if no file found
System.exit (0);
}

Scanner cards2 = null;

try
{
// Create a scanner to read the file, file name is parameter
cards = new Scanner (new File("C:\\Users\\Phil\\Desktop\\cards2.txt"));
}
catch (FileNotFoundException e)
{
System.out.println ("File not found!");
// Stop program if no file found
System.exit (0);
}

ArrayList oppDeck = new ArrayList();
ArrayList yourDeck = new ArrayList();
int x = 0;

while(cards.hasNext())
{
/*oppDeck[x] = cards.nextInt();
yourDeck[x] = oppDeck[x];
x++;*/

oppDeck.add(cards.nextInt());
yourDeck = oppDeck;
}

/*for(int y = 0; y<=51; y++)
{
System.out.print(yourDeck.get(y));
}*/

Random randomGenerator = new Random();
Random randomGenerator2 = new Random();

int randOpp = 0;
int randYour = 0;

Scanner askQ = new Scanner(System.in);
String answer = "";

while(oppDeck.size() != 0 || yourDeck.size() != 0)
{

System.out.print("Press 'd' to draw a card: ");
answer = askQ.nextLine();

randYour = randomGenerator.nextInt(yourDeck.size());
System.out.print("You played the card: ");

printYourCard(yourDeck, randYour);

randOpp = randomGenerator.nextInt(oppDeck.size());
System.out.print("Your opponent played the card: ");
printOppCard(oppDeck, randOpp);
System.out.println("");

Integer a = new Integer(yourDeck.get(randYour).toString());
int b = a.intValue();

Integer c = new Integer(oppDeck.get(randOpp).toString());
int d = c.intValue();

if(b>d)
{
yourDeck.add(oppDeck.get(randOpp));
oppDeck.remove(oppDeck.get(randOpp));
oppDeck.trimToSize();
yourDeck.trimToSize();
}
else if(b<d)
{
oppDeck.add(yourDeck.get(randYour));
yourDeck.remove(yourDeck.get(randYour));
yourDeck.trimToSize();
}
else if(b==d)
{
ArrayList keep = new ArrayList();

keep.add(yourDeck.get(randYour));
yourDeck.remove(yourDeck.get(randYour));
keep.add(oppDeck.get(randOpp));
oppDeck.remove(oppDeck.get(randOpp));

//next drawn important card Your
Random nextCard = new Random();
int nCard = nextCard.nextInt(yourDeck.size());
Integer e = new Integer(yourDeck.get(nCard).toString());
int f = e.intValue();
yourDeck.remove(yourDeck.get(nCard));

//draw 3 and remove those
Random warYou1 = new Random();
int warY1 = warYou1.nextInt(yourDeck.size());
keep.add(yourDeck.get(warY1));
yourDeck.remove(yourDeck.get(warY1));

Random warYou2 = new Random();
int warY2 = warYou1.nextInt(yourDeck.size());
keep.add(yourDeck.get(warY2));
yourDeck.remove(yourDeck.get(warY2));

Random warYou3 = new Random();
int warY3 = warYou1.nextInt(yourDeck.size());
keep.add(yourDeck.get(warY3));
yourDeck.remove(yourDeck.get(warY3));

//next drawn important card Opp
Random oppNextCard = new Random();
int oCard = oppNextCard.nextInt(oppDeck.size());
Integer g = new Integer(oppDeck.get(oCard).toString());
int h = g.intValue();
oppDeck.remove(oppDeck.get(oCard));

//draw 3 and remove those
Random warOpp1 = new Random();
int warO1 = warYou1.nextInt(yourDeck.size());
keep.add(oppDeck.get(warO1));
oppDeck.remove(oppDeck.get(warO1));

Random warOpp2 = new Random();
int warO2 = warYou1.nextInt(yourDeck.size());
keep.add(oppDeck.get(warO2));
oppDeck.remove(oppDeck.get(warO2));

Random warOpp3 = new Random();
int warO3 = warYou1.nextInt(yourDeck.size());
keep.add(oppDeck.get(warO3));
oppDeck.remove(oppDeck.get(warO3));

if(f>h)
{
for(int i = 0; i<keep.size();i++)
{
yourDeck.add(keep.get(i));
}
}
else if(f<h)
{
for(int i = 0; i<keep.size();i++)
{
oppDeck.add(keep.get(i));
}
}

}//exit tie breaker
System.out.println("--Your cards left: "+yourDeck.size());
System.out.println("--Your opponents cards left: "+oppDeck.size());
System.out.println();

}

}
}