what package to import when there is board?

[poopsy]

hi all,
i'm trying out some examples on java..and i found this code where there is board and i cant find out what package to import to make this work, im getting error where there is "board"..
i have tried out the following but none worked:
import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.applet.App let;

plz help

import java.util.concurrent.CyclicBarrier;

public class CellularAutomata {
private final Board mainBoard;
private final CyclicBarrier barrier;
private final Worker[] workers;

public CellularAutomata(Board board) {
    this.mainBoard = board;

    int count = Runtime.getRuntime().availableProcessors();
    
    this.barrier = new CyclicBarrier(count, new Runnable() 
    { // barrier action
        public void run(){mainBoard.commitNewValues();
        }
        }
    );
    this.workers = new Worker[count];

    for (int i = 0; i < count; i++)
        workers[i] = new Worker(mainBoard.getSubBoard(count, i));
    } // constructor
    
    public void start() {
        for (int i = 0; i < workers.length; i++)     
            new Thread(workers[i]).start();
        mainBoard.waitForConvergence();
} // start()
} // CellularAutomata


class Worker implements Runnable {

    private final Board board;

    public Worker(Board board) { 
        this.board = board; 
        }
    
    public void run() {
        while (!board.hasConverged()) {
            for (int x = 0; x < board.getMaxX(); x++)
                for (int y = 0; y < board.getMaxY(); y++)
                    board.setNewValue(x, y, computeValue(x, y));
            try { barrier.await(); 
            }
            catch (InterruptedException ex) { return; }
            catch (BrokenBarrierException ex) { return; }
        } // while
    } // run()

    private int computeValue(int x, int y) {
// Compute the new value that goes in (x,y)

}
} // Worker

[JosAH]

Board is certainly not a class that comes with your JSE distribution. I suggest you'd read that example again, maybe it's one of their classes and they have shown the source of that class.

kind regards,

Jos