How do I add random letter in java (for blackjack game)

[devilinthebox]

I'm fairly new to java and need help with adding letters (J, Q, K, A) into the program and adding values for each. Thanks.

// February 8, 2008
// The "BlackJack" class.
import java.awt.*;
import hsa.Console;
import java.util.Random; // Only the Random class
import java.util.*;      // All classes in the java.util package
 
public class BlackJack
{
    static Console c;           // The output console
 
    public static void main (String[] args)
    {
        c = new Console ();
 
        char another;   
        c.println("******************");
        c.println("B-L-A-C-K-J-A-C-K");
        c.println("******************");
        c.println ("Your Cards:");
        int n = (int)(10.0 * Math.random()) + 1;
        int m = (int)(10.0 * Math.random()) + 1;
        c.print ("|" + n);
        c.println ("| |" + m + "|");
        int total;
        total = n+m;
        c.println ("You now have " + total);
        if (total <=21)
        {
        c.println ();
        c.print ("Do you want another? (y/n) ");
        another = c.readChar();
                if (another == 'y' | another == 'Y')
        {
                int a = (int)(10.0 * Math.random()) + 1;
                c.println ("You have added the card " + a);
                c.println ("You now have in total " + (n+m+a));
        }
        else if (total >21)
        {
        c.println ();
        c.print ("Your busted!");
        }
        }
    } // main method
} // BlackJack class
 

[Laharl]

Make an array of characters and fill it with 0-9, J, Q, K, A. Then, use Random to generate which index you need and that's your card.

[devilinthebox]

Please include the code of that, I dont know what arrays are.

[Laharl]

Sun's Java Tutorial can explain them to you far better than I.

[jimhawkss]

I think what you are trying to do is have the program print out a letter instead of the numbers 11, 12, 13, & 1 Right?
I am assuming you are printing the numbers to the screen right.
if so make a Switch after your random number but befor you display

switch (your number variable)
{
case 1: System.printline("A"); break;
case 11: System.printline("J"); break;
case 12: System.printline("Q"); break;
case 13: System.printline("K"); break;
}

Just have your program remember the numbers. Player only has to see the cards and nothing else.

Hopefully this helps.


Part I forgot:
Also you will want to keep track of the numbers seperately so you can always print out the right letters. you can Make a Case 14. Just make sure that when you reference the array you have your method say something like
(If Intname == 13) total += 10;
same for 11, and 12. That way when they have a face card you aren't giving them more then what it is actually worth.

[ukrainehigh]

how do say do you want another card?

[pbrockway2]

@ukrainehigh
Rather than resurrect an old thread you might do better to start your own. It's also best to ask the question as precisely as possible - usually with your own code and a statement about what is going wrong (compiler message or a description of the runtime behaviour.)

[ukrainehigh]

I dont want to put it up in public since it's going to get marked soon is there anyway to pm you?