current包下Exchanger的使用

public static void main(String[] args) {
final Exchanger<String> exchanger = new Exchanger<String>();
new Thread(new Runnable() {
public void run() {
String name = "Jack";
try {
System.out.println(Thread.currentThread().getName() + "   start....  name = " + name);
name = exchanger.exchange(name);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + "   end....   name = " + name);
}
}).start();

new Thread(new Runnable() {
String name = null;

public void run() {
try {
System.out.println(Thread.currentThread().getName() + "   start....  name = " + name);
Thread.sleep(10000);
name = exchanger.exchange(name);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + "   end....   name = " + name);

}
}).start();
}

Thread-0   start....  name = Jack
Thread-1   start....  name = null
Thread-1   end....   name = Jack
Thread-0   end....   name = null