gistfile1.java

import java.util.BitSet;
import java.util.concurrent.CountDownLatch;

public class WordTearingExample {

    public static void main(String[] args) throws Exception {
        BitSet bs = new BitSet();
        CountDownLatch latch = new CountDownLatch(1);

        System.out.println("getting ready");

        Thread t1 = new Thread(new Runnable() {
            public void run() {
                try {
                    latch.await();
                    Thread.sleep(1000);
                } catch (Exception ex) {
                }
                bs.set(1);
                System.out.println("thread1 done");
            }
        });
        Thread t2 = new Thread(new Runnable() {
            public void run() {
                try {
                    latch.await();
                    Thread.sleep(1000);
                } catch (Exception e) {
                }
                bs.set(2);
                System.out.println("thread2 done");
            }
        });

        t1.start();
        t2.start();

        latch.countDown();

        t1.join();
        t2.join();

        System.out.println(bs.get(1));
        System.out.println(bs.get(2));

    }

}