import javax.swing.*;

public class DiceWorker extends SwingWorker {
    int timesToRoll;

    // set up the Swing worker
    public DiceWorker(int timesToRoll) {
        super();
        this.timesToRoll = timesToRoll;
    }

    // define the task the worker performs
    protected int[] doInBackground() {
        int[] result = new int[16];
        for (int i = 0; i < this.timesToRoll; i++) {
            int sum = 0;
            for (int j = 0; j < 3; j++) {
                sum += Math.floor(Math.random() * 6);
            }
            result[sum] = result[sum] + 1;
        }
        // transmit the result
        return result;
    }
}