LinkedBlockingQueue使用

import java.util.concurrent.LinkedBlockingQueue;
public class Main {
  public static void main(String[] args) {
    LinkedBlockingQueue<Integer> queue =new LinkedBlockingQueue<Integer>();
    for (int i = 1; i < 10; i++) {
      queue.add(i);
    }
    //先进先出，并删除
    System.out.println(queue.poll());
    System.out.println(queue.poll());
    System.out.println(queue.poll());
    //获取第一个元素·但不删除
    System.out.println(queue.element());
    System.out.println(queue);
  }
}

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class BlockingQueueTest {
 /**
 定义装苹果的篮子
  */
 public static class Basket{
  // 篮子，能够容纳3个苹果
  BlockingQueue<String> basket = new ArrayBlockingQueue<String>(3);
  // 生产苹果，放入篮子
  public void produce() throws InterruptedException{
   // put方法放入一个苹果，若basket满了，等到basket有位置
   basket.put("An apple");
  }
  // 消费苹果，从篮子中取走
  public String consume() throws InterruptedException{
   // get方法取出一个苹果，若basket为空，等到basket有苹果为止
   String apple = basket.take();
   return apple;
  }
  public int getAppleNumber(){
   return basket.size();
  }
 }
 //　测试方法
 public static void testBasket() {
  // 建立一个装苹果的篮子
  final Basket basket = new Basket();
  // 定义苹果生产者
  class Producer implements Runnable {
   public void run() {
    try {
     while (true) {
      // 生产苹果
      System.out.println("生产者准备生产苹果：" 
        + System.currentTimeMillis());
      basket.produce();
      System.out.println("生产者生产苹果完毕：" 
        + System.currentTimeMillis());
      System.out.println("生产完后有苹果："+basket.getAppleNumber()+"个");
      // 休眠300ms
      Thread.sleep(300);
     }
    } catch (InterruptedException ex) {
    }
   }
  }
  // 定义苹果消费者
  class Consumer implements Runnable {
   public void run() {
    try {
     while (true) {
      // 消费苹果
      System.out.println("消费者准备消费苹果：" 
        + System.currentTimeMillis());
      basket.consume();
      System.out.println("消费者消费苹果完毕：" 
        + System.currentTimeMillis());
      System.out.println("消费完后有苹果："+basket.getAppleNumber()+"个");
      // 休眠1000ms
      Thread.sleep(1000);
     }
    } catch (InterruptedException ex) {
    }
   }
  }
  ExecutorService service = Executors.newCachedThreadPool();
  Producer producer = new Producer();
  Consumer consumer = new Consumer();
  service.submit(producer);
  service.submit(consumer);
  // 程序运行10s后，所有任务停止
  try {
   Thread.sleep(10000);
  } catch (InterruptedException e) {
  }
  service.shutdownNow();
 }
 public static void main(String[] args) {
  BlockingQueueTest.testBasket();
 }
}