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一、通过SynchronousQueue方式实现线程间数据传递：

　　线程A与线程B共同持有一个SynchronousQueue的引用，线程B调用take方法，阻塞以等待； 线程A运行后计算出结果，将结果put到queue中;

public class SynchronousQueueTest {    public static void main(String[] args) throws InterruptedException {        SynchronousQueue
     
       queue = new SynchronousQueue
      
       ();        //线程A putThread        Thread putThread = new Thread(new Runnable() {            @Override            public void run() {                System.out.println("put thread start");                try {                    Thread.sleep(3000);                    System.out.println("put thread put对象");                    queue.put(1);                } catch (InterruptedException e) {                }                System.out.println("put thread end");            }        });        //线程B takeThread        Thread takeThread = new Thread(new Runnable() {            @Override            public void run() {                System.out.println("take thread start");                try {                    System.out.println("take thread 等待put对象");                    System.out.println("take from putThread: " + queue.take());                } catch (InterruptedException e) {                }                System.out.println("take thread end");            }        });        putThread.start();        takeThread.start();    }}
      
     

 二、线程Exchanger工具类实现线程间的数据交换：

　　当一个线程到达exchange调用点时，如果它的伙伴线程此前已经调用了此方法，那么它的伙伴会被调度唤醒并与之进行对象交换，然后各自返回。如果它的伙伴还没到达交换点，那么当前线程将会被挂起，直至伙伴线程到达——完成交换正常返回；或者当前线程被中断——抛出中断异常；又或者是等候超时——抛出超时异常。

public class ExchangerTest {    public static void main(String[] args) {        ExecutorService service = Executors.newCachedThreadPool();        final Exchanger exchanger = new Exchanger();        service.execute(new Runnable(){            public void run() {                try {                                    String data1 = "thread-1-data";                    System.out.println("线程" + Thread.currentThread().getName() +"正在把数据" + data1 +"换出去");                    Thread.sleep((long)(Math.random()*10000));                    String data2 = (String)exchanger.exchange(data1);                    System.out.println("线程" + Thread.currentThread().getName() + "换回的数据为" + data2);                }catch(Exception e){                                    }            }            });        service.execute(new Runnable(){            public void run() {                try {                                    String data1 = "thread-2-data";                    System.out.println("线程" + Thread.currentThread().getName() + "正在把数据" + data1 +"换出去");                    Thread.sleep((long)(Math.random()*10000));                                        String data2 = (String)exchanger.exchange(data1);                    System.out.println("线程" + Thread.currentThread().getName() + "换回的数据为" + data2);                }catch(Exception e){                                    }                            }            });            }}