card game program

/******************************************************************************
Eric Zhang
Comp Sci 3
May 13, 2021
Card games Program
*******************************************************************************/
//Extras: quit option, double down,

//try for more extras

import java.io.*;
public class Main
{
    public static void win (boolean d)
    {
        if (d)
        {
            System.out.print("\nYou Win Double!");
        }
        else
        {
             System.out.print("\nYou Win!");
        }
    }
    public static void tie ()
    {
        
        System.out.print("\nPush!");
    }
    public static void lose (boolean d)
    {
        if (d)
        {
            System.out.print("\nYou Lose Double!");
        }
        else
        {
            System.out.print("\nYou Lose!");
        }
    }
    public static int dealerdraw (BlackjackHand temp, Deck deck)
    {
        Card current;
        int total;
        current = deck.dealCard();
        temp.addCard (current);
        System.out.println("\nThe dealer's next card is a "+current.showValue()+" of "+ current.getSuit()+ ".");
        total = temp.getValue();
        System.out.print("\nThe dealer has "+ total + ".");
        return total;
    }
    public static String cap (String word)
    {
        word = word.toUpperCase();
        return word;
    }
    public static int check (BlackjackHand temp)
    {
        int ret;
        int total;
        total = temp.getValue();
        if (total < 21)
        {
            ret = -1;
        }
        else if (total == 21)
        {
            ret = 0;
        }
        else 
        {
            ret = 1;
        }
        return ret;
    }
	public static void main(String[] args) throws IOException
	{
	    DataInputStream reader = new DataInputStream(System.in);
		Card current;
		String choice;
		int over;
		boolean d;
		Deck deck;
		String again = "Y";
		int check;
		Card deal;
		int temp;
		BlackjackHand player = new BlackjackHand();
		BlackjackHand dealer = new BlackjackHand();
		int playertotal;
		int dealertotal;
		while (again.equals("Y"))
		{
		    deck = new Deck ();
		    player.clearHand();
		    dealer.clearHand();
		    playertotal = 0;
		    d = false;
		    dealertotal = 0;
    		deck.shuffle();
    		System.out.println("Welcome to E.Z. Blackjack Palace! ");
    		//give player 1st card
    		current = deck.dealCard();
    		player.addCard (current);
    		System.out.println("\nYour first card is the " +current.showValue()+" of "+ current.getSuit()+ "."); 
    		//give dealer 1st card faced down
    		deal = deck.dealCard();
    		dealer.addCard (deal);
    		
    		//give player 2nd card
    		current = deck.dealCard();
    		player.addCard (current);
    		
    		System.out.println("Your second card is the "+current.showValue()+" of "+ current.getSuit()+ ".");
    		playertotal = player.getValue();
    		System.out.println("You have " + playertotal + ".");
    		check = check (player);
    		if (check == 0)
    		{
    		    win(d);
    		}
    		else 
    		{
    		    //give dealer 2nd card faced up
    		    current = deck.dealCard();
        		dealer.addCard (current);
        		System.out.println("\nThe dealer is showing a "+current.showValue()+" of "+ current.getSuit()+ ".");
    		    System.out.print("\nWould you like to hit stay or double down? (H/S/D): ");
    		    choice = reader.readLine();
            	choice = cap(choice);
            	if (choice.equals("D"))
            	{
            	    current = deck.dealCard();
    		        player.addCard (current);
    		        System.out.println("Your next card is "+current.showValue()+" of "+ current.getSuit()+ ".");
    		        playertotal = player.getValue();
    		        System.out.println("You have " + playertotal + ".");
    		        d = true;
            	}
            	while (choice.equals ("H"))
            	{
            	    current = deck.dealCard();
    		        player.addCard (current);
    		        System.out.println("Your next card is "+current.showValue()+" of "+ current.getSuit()+ ".");
    		        playertotal = player.getValue();
    		        System.out.println("You have " + playertotal + ".");
    		        check = check (player);
                	if ((check == 0) || (check == 1))
                	{
                	    choice = "S";
                	}
                	else
                	{
                	    System.out.print ("\nWould you like to hit or stay? (H/S): ");
    		            choice = reader.readLine();
                	    choice = cap(choice);
                	}
                	
            	}
            	
            	check = check (player);
            	if (check == 0)
    		    {
    		        win(d);
    		    }
    		    else if (check == 1)
    		    {
    		        lose(d);
    		    }
    		    else 
    		    {
    		        System.out.print("\nThe dealer was holding a " + deal.showValue() +" of " + deal.getSuit()+".");
    		        while (dealertotal < 17)
    		        {
    		            dealertotal = dealerdraw (dealer, deck);
    		        }
    		        check = check (dealer);
    		        if (check == 0)
    		        {
    		            lose(d);
    		        }
    		        else if (check > 0)
    		        {
    		            win(d);
    		        }
    		        else
    		        {
    		            if ((playertotal - dealertotal) > 0)
    		            {
    		                win(d);
    		            }
    		            else if ((playertotal - dealertotal) == 0)
    		            {
    		                tie();
    		            }
    		            else
    		            {
    		                lose(d);
    		            }
    		        }
    		    }
    		}
    		    System.out.print("\n\nWould you like to play again? (y/n): ");
            	again = reader.readLine();
        	    again = cap(again);
    	}
	}
}