BlockingQueue

package concurrentTest;
import java.util.Random;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;

public class TestBlockingQueue {

    public static void main(String[] args) {
        final BlockingQueue<Integer> queue=new LinkedBlockingQueue<Integer>(3);
        final Random random=new Random();

        class Producer implements Runnable{
            public void run() {
                while(true){
                    try {
                        int i=random.nextInt(100);
                        queue.put(i);//當隊列達到容量時候，會自動阻塞的
                        System.out.println("put "+ i + " into queue");
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }

        class Consumer implements Runnable{
            public void run() {
                while(true){
                    try {
                        System.out.println("consumer:" + queue.take());//當隊列爲空時，也會自動阻塞
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }

        new Thread(new Producer()).start();
        new Thread(new Consumer()).start();
    }

}