一个线程从队列里取数据，一个线程往队列里添加数据
import java.util.concurrent.Exchanger;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class ExchangerTest {
public static void main(String[] args) {
ExecutorService service = Executors.newCachedThreadPool();
final Exchanger<String> exchanger = new Exchanger<String>();
service.execute(new Runnable() {
@Override
public void run() {
try {
String data1 = "zxx";
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) {
e.printStackTrace();
}
}
});
service.execute(new Runnable() {
@Override
public void run() {
try {
String data1 = "lhm";
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) {
e.printStackTrace();
}
}
});
}
}
长度为1的阻塞队列实现同步通知
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class BlockingQueueCondition {
public static void main(String[] args) {
ExecutorService service = Executors.newSingleThreadExecutor();
final Business3 business = new Business3();
service.execute(new Runnable(){
public void run() {
for(int i=0;i<50;i++){
business.sub();
}
}
});
for(int i=0;i<50;i++){
business.main();
}
}
}
class Business3{
BlockingQueue<Integer> subQueue = new ArrayBlockingQueue<Integer>(1);
BlockingQueue<Integer> mainQueue = new ArrayBlockingQueue<Integer>(1);
//这里是匿名构造方法，只要new一个对象都会调用这个匿名构造方法，它与静态块不同，静态块只会执行一次，
//在类第一次加载到JVM的时候执行
//这里主要是让main线程首先put一个，就有东西可以取，如果不加这个匿名构造方法put一个的话程序就死锁了
{
try {
mainQueue.put(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void sub(){
try
{
mainQueue.take();
for(int i=0;i<10;i++){
System.out.println(Thread.currentThread().getName() + " : " + i);
}
subQueue.put(1);
}catch(Exception e){
}
}
public void main(){
try
{
subQueue.take();
for(int i=0;i<5;i++){
System.out.println(Thread.currentThread().getName() + " : " + i);
}
mainQueue.put(1);
}catch(Exception e){
}
}
}
本文出自 “点滴积累” 博客，请务必保留此出处http://tianxingzhe.blog.51cto.com/3390077/1716903
