Exchanger使用
1.概念
Exchanger用于线程间进行通信、数据交换。Exchanger提供了一个同步点exchange方法,两个线程调用exchange方法时,无论调用时间先后,两个线程会互相等到线程到达exchange方法调用点,此时两个线程可以交换数据,将本线程产出数据传递给对方。
2.使用
import java.util.concurrent.Exchanger;
public class TestExchanger {
static Exchanger<String> exchanger = new Exchanger<>();
public static void main(String[] args) {
new Thread(() -> {
String s = "T1";
try {
s = exchanger.exchange(s);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + " " + s);
}, "t1").start();
new Thread(() -> {
String s = "T2";
try {
s = exchanger.exchange(s);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + " " + s);
}, "t2").start();
}
}