How to get the last variable value in the end of class?

Question

How to access to the last value of the variable from another class? The program runs in 30 seconds and the end of 30 seconds, It prints variables.

Game class:

public class Game {
    public int true_num = 0, false_num = 0;

    public Game() throws InterruptedException, IOException {
        new TimerDemo(30);
        while (true) {
            play(); // true_num/false_num are changed in this method.
        }

    }
}

TimerDemo class:

public class TimerDemo {
        Toolkit toolkit;

    Timer timer;

    public TimerDemo(int seconds) {
        toolkit = Toolkit.getDefaultToolkit();
        timer = new Timer();
        timer.schedule(new RemindTask(), seconds * 1000);
    }

    class RemindTask extends TimerTask {

        @Override
        public void run() {
            System.out.println("Time's up!");

            JLabel lb = new JLabel("true_num = " + true_num
                    + " and " + "false_num = " + false_num);
            lb.setFont(new Font("Arial", Font.BOLD, 18));
            UIManager.put("OptionPane.minimumSize", new Dimension(150, 90));
            JOptionPane.showMessageDialog(null, lb, "aaa", 1);

            toolkit.beep();
            System.exit(0);
        }
    }
}

How to access the last value of the variables in the play function in Game class? call class is caused play function runs again that should not.

Give TimerDemo a reference to the Game instance e.g. via the constructor `new TimerDemo(30, this);` Also `true_num` should technically be `volatile` if you want to guarantee the timer task can read the actual value — zapl, Apr 25 '18 at 20:55
@zapal, I did and it worked: `private final Game get_val; private RemindTask(Game1 aThis) { get_val = aThis; }` and `get_val.true_num`. but Game runs again after end of 30 seconds. — ParisaN, Apr 25 '18 at 21:41

score 0 · Accepted Answer · answered May 27 '18 at 14:43

Without reference from Game, I adding Game.total and defined volatile total in Game.

In TimerDemo:

public void run() {
     System.out.println("Time's up! Total = " + Game.total + "true_num =" + Game.true_num + "false_num =" + Game.false_num);
}

In Game:

public static volatile int true_num = 0, false_num = 0, total = 0;

How to get the last variable value in the end of class?

1 Answers1