I want to use objects that I've declared in one class in a subclass but it gives me non-static variable cannot be referenced from static context I'm a beginner with this so what can I change to make this work

class PairofDice {
    int d61;
    int d62;
    PairofDice d1 = new PairofDice();
    PairofDice d2 = new PairofDice();

    class BoxCars {
    public static void main(String[] args) {
        roll();
        Random rand = new Random();

        int BC = 0;
        for (int i = 0; i < 1000; i  ) {
            d1.d61 = rand.nextInt(6   1 - 1)   1;
            d2.d62 = rand.nextInt(6   1 - 1)   1;
            if (d1.d61   d2.d62 == 12) {
                BC  ;
            }
        }

        }
    }
}

(ignore the roll method it's a part of something else)

CodePudding user response：

Here is a suggested structure for you code. They can be put in the same file with BoxCars (the goal of your program) to be declared public.

public class BoxCars {
   
    public static void main(String[] args) {
        PairOfDice dice = new PairOfDice();
        int numberOfRolls = dice.roll();
        System.out.printf("I rolled %d box cars%n", numberOfRolls);
    }
}

class PairOfDice {
    int d1;
    int d2;
    public int roll() {
        // No need to create instances of dice here.  Just use d1 and d2
        // code here to count the dice that are box cars.
        // you have already written this.
        return BC;
    }
}

CodePudding user response：

Have you tried making the inner class static?