Java Beginner: Scanner Console and two 6-sided dice problem

Question

I have to create a program in which a user can input a desired sum, then rolls a two six sided dices until their sum is the desired sum. I know that a) I have to use Scanner since it's an interactive program. b) I have to use indefinite loops to solve the problem including the use of random numbers. c) I don't expect you to give me the answer like I'm just copying and pasting. I just want to be guided on what to do so that my code actually compiles.

Here is my code:

import java.util.*;

 public class Game {
     public static void main(String[] args) {
         System.out.println("Try rolling two six-sided dices");
         System.out.println("until their sum is your");
         System.out.println("desired sum.");
         System.out.println();

         Scanner console = new Scanner (System.in);
         Random r = new Random();
         int sum = 0;
         int tries = 0;
         While (sum != number) {
             int roll1 = rand.nextInt(6) +1;
             int roll2 = rand.nextInt(6) +1;
             sum = roll1 + roll2;
             tries++;
         }
     }

         System.out.println("Desired dice sum: ");
         int number = console.nextInt();

*I keep getting these 3 compile errors:

Game.java:21: ';' expected While (sum != number) { ^ Game.java:29: expected
System.out.println("Desired dice sum: "); ^ Game.java:29: illegal start of type
System.out.println("Desired dice sum: "); ^ 3 errors

---

Edit:

Still getting 3 more compile errors

import java.util.*;

public class Game { public static void main(String[] args) { System.out.println("Try rolling two six-sided dice"); System.out.println("until their sum is your"); System.out.println("desired sum."); System.out.println();

     Scanner console = new Scanner (System.in);
     Random r = new Random();
     System.out.println("Desired dice sum: ");
     int number = console.nextInt();

     int sum = 0;
     int tries = 0;

     while (sum != number) {
         int roll1 = rand.nextInt(6) +1;
         int roll2 = rand.nextInt(6) +1;
         sum = roll1 + roll2;
         tries++;
     }
 }

}

@Matt:

This is the output that I should have, sorry for not being clear:

Desired dice sum: 9
4 and 3 = 7
3 and 5 = 8
5 and 6 = 11
5 and 6 = 11
1 and 5 = 6
6 and 3 = 9

Answer 1

1. It should be while, not While.

2. You're missing a closing brace (}) at the end of your code.

3. The (current) last two lines need to be inside of a method.

4. You have not declared a variable named number properly. This is related to problem #3.

5. You first call your random generator r, but later try to reference it by rand.

---

Try something like this (untested):

import java.util.*;

public class Game {
    public static void main(String[] args) {
        System.out.println("Try rolling two six-sided dices");
        System.out.println("until their sum is your");
        System.out.println("desired sum.");
        System.out.println();

        System.out.println("Desired dice sum: ");
        Scanner console = new Scanner (System.in);
        int number = console.nextInt();

        Random rand = new Random();
        int sum = 0;
        int tries = 0;
        while (sum != number) {
            int roll1 = rand.nextInt(6) +1;
            int roll2 = rand.nextInt(6) +1;
            sum = roll1 + roll2;
            tries++;
            System.out.println("Found sum: " + sum);
        }

        System.out.println("Done in " + tries + " tries");
    }
}

Answer 2

Why do you have:

     System.out.println("Desired dice sum: ");
     int number = console.nextInt();

Out side of main? Put it back in.

Also, while is not the same as While change it to while.

---

In response to your new problems:

int roll1 = rand.nextInt(6) +1;

Should be something like:

int roll1 = r.nextInt(6) + 1;

Because you are making a variable r for your random not a variable rand.

Answer 3

The last 2 lines:

System.out.println("Desired dice sum: ");
int number = console.nextInt();

are outside of your main. They need to be in main. If you want numbers to be a member of your class, declare it above your main, and initialize it in main, like:

private int number;
public static void main(String args[])
{
  ...
  number = console.nextInt();
  ...
}

Also, you can't make that System.out.println outside of a method. Put it in main.