JavaThread 2 Joint threads

public class Lab2 {

    public static void main(String[] args) {
        Runnable joes = new SharingAResource("Eat at Joe's", 10, 2);
        Runnable bills = new SharingAResource("Eat at Bill's", 10, 4);

        Thread j = new Thread(joes);
        Thread b = new Thread(bills);

        j.start();
        b.start();

//      try {
//          j.join();
//          b.join();
//      } catch (InterruptedException e) {
//          return;
//      }

        System.out.println("Billboard closed");


    }



}


class SharingAResource implements Runnable {

    private String message;
    private int counter;
    private int pause;

    //constructor
    public SharingAResource(String message, int counter, int pause){
        this.message = message;
        this.counter = counter;
        this.pause = pause * 1000;
    }

    public void run() {

        for(int i=0; i<counter; i++) {
            try {
                Thread.sleep(this.pause);
            } catch(InterruptedException e) {
                return;
            }

            System.out.println(this.message);
        }

    }
}