试图多线程化Eratosthenes的Sieve，每个线程都要筛选一系列数字

Question

遗憾的是，我对如何开始使用多线程非常感到失望。 Here is my un-threaded sieve code。我假设线程代码看起来非常相似。也许是这样的??? ：

public class PrimeThread extends Thread {

    private int start, stop;
    ArrayList<Integer> list;

    public PrimeThread(int start, int stop, ArrayList<Integer> list) {
        this.start = start;
        this.stop = stop;
        this.list = list;
    }

    public void run() {
        boolean done = false;
        int currPrime = 0, pos = 2, initVal = 0;

        outerloop:
        for (int i = start; i < stop; i++) { //for every number in the list
            while (list.get(pos) == 0) {
                if (pos == list.size() - 1) {
                    break outerloop;
                }
                pos++;
            }

            currPrime = list.get(pos++); //set the current prime
            initVal = currPrime; //save the initial val of the prime
            done = false;

            while (!done) {
                try {
                    //increment the currPrime by its initial value
                    currPrime += initVal; 
                    //set the number at the new currPrime position to 0
                    list.set(currPrime, 0); 
                } catch (IndexOutOfBoundsException e) { 
                    //if currPrime position > list size, break out of while loop 
                    done = true;
                }
            }
        }
    }
}

有人可以帮忙解释一下如何开始吗？