Abstract theater class

package ExampleStuff;

import java.text.NumberFormat;

public class AbstractTheaters {

    public static void main(String[] args) {
        runExample();
    }
    private static void runExample() {
        System.out.println("runExample()");

        Regular reg1 = new Regular();
        reg1.describe();
        reg1.seats(70);
        reg1.price(8.0);
        reg1.lbreak();

        IMAX imax1 = new IMAX();
        imax1.describe();
        imax1.seats(120);
        imax1.price(15.0);
        imax1.lbreak();

        Luxury lux1 = new Luxury();
        lux1.describe();
        lux1.seats(40);
        lux1.price(12.5);
        lux1.lbreak();
    }
}

abstract class Theater {
    int j, k;
    void seats(int seats) {
        if (seats < 70)
            System.out.println("Contains " + seats + " reclining seats");
        else
            System.out.println("Contains " + seats + " seats.");
    }

    void price(double price) {
        NumberFormat $ = NumberFormat.getCurrencyInstance();
        System.out.println("Ticket price: " + $.format(price));
    }

    void lbreak() {
        System.out.println("-------------------------------");
    }

    abstract void describe();
}

class Regular extends Theater {
    void describe() {
        System.out.println("Regular theater room.");
    }

}

class IMAX extends Theater {
    void describe() {
        System.out.println("IMAX theater room.");
    }

}

class Luxury extends Theater {
    void describe() {
        System.out.println("Luxury theater room.");
    }

}