Question

I'm trying to work with this code that I have. i want to kick the user back if they don't enter a number in the specified range but I haven't been able to get a while loop working right.

1. Write a program name Blackjack_Jr that allows a human user to play a single hand of "blackjack" against a dealer.
2. Pick two values from 1-10 for the player. These are the player's "cards". These two values must be user inputs
3. Generate two more values from 1-10 for the dealer. These two values should be randomly generated by your code
4. Whoever has the highest total is the winner.

public class Blackjack_Jr
{

   public static void main(String[] args)
   {
       int card1;
       int card2;
       int player1;
       int dealer;
       Random rand = new Random();
       int card3 = rand.nextInt(11);
       int card4 = rand.nextInt(11);
       Scanner in = new Scanner(System.in);
      
       System.out.println("Blackjack Jr!");
       System.out.println();
       System.out.print("Pick Your First Card from 1-10: ");
       card1 = in.nextInt();
       System.out.print("Pick Your Second Card from 1-10: ");
       card2 = in.nextInt();
       System.out.println();
       player1 = card1 + card2;
       dealer = card3 + card4;
          
       System.out.print("You have entered " +card1);
       System.out.println(" and " +card2);
       System.out.println("Your total is: " +player1);
       System.out.println();
              
      
              
       System.out.print("The dealer has drawn " +card3);
       System.out.println(" and " +card4);
       System.out.println("The dealer's total is: " +dealer);
              
           if(player1 > dealer)
           {
               System.out.println("Congratulations! You Won!");
           }else
           {
               System.out.println("Sorry you have lost. :-(");
           }
      
      

   }

}

Answer 1

package NewOne;

import java.util.Random;
import java.util.Scanner;

public class Blackjack_Jr {

   public static void main(String[] args) {
       int card1;
       int card2;
       int player1;
       int dealer;
       Random rand = new Random();
       int card3 = rand.nextInt(11);
       int card4 = rand.nextInt(11);
       Scanner in = new Scanner(System.in);

       System.out.println("Blackjack Jr!");
       System.out.println();
       System.out.print("Pick Your First Card from 1-10: ");
       card1 = in.nextInt();

       while (!(card1 >= 1 && card1 <= 10)) {

           System.out.print("Invalid number: Pick Your First Card from 1-10: ");
           card1 = in.nextInt();
       }
       System.out.print("Pick Your Second Card from 1-10: ");
       card2 = in.nextInt();

       while (!(card2 >= 1 && card2 <= 10)) {

           System.out.print("Invalid number: Pick Your Second Card from 1-10: ");
           card2 = in.nextInt();
       }
       System.out.println();
       player1 = card1 + card2;
       dealer = card3 + card4;

       System.out.print("You have entered " + card1);
       System.out.println(" and " + card2);
       System.out.println("Your total is: " + player1);
       System.out.println();

       System.out.print("The dealer has drawn " + card3);
       System.out.println(" and " + card4);
       System.out.println("The dealer's total is: " + dealer);

       if (player1 > dealer) {
           System.out.println("Congratulations! You Won!");
       } else {
           System.out.println("Sorry you have lost. :-(");
       }

   }

}

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