JAVA 阻塞队列 ArrayBlockingQueue

package cn.itcast.hemai2;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
/**
 * 这是一个典型的“有界缓存区”，固定大小的数组在其中保持生产者插入的元素和使用者提取的元素。一旦创建了这样的缓存区，就不能再增加其容量。
 * 试图向已满队列中放入元素会导致操作受阻塞；试图从空队列中提取元素将导致类似阻塞。 
 * ArrayBlockingQueue
	只有put方法和take方法才具有阻塞功能
 * @author admin
 *
 */
public class BlockingQueueTest {
	public static void main(String[] args) {
		final BlockingQueue queue = new ArrayBlockingQueue(3);
		for(int i=0;i<2;i++){
			new Thread(){
				public void run(){
					while(true){
						try {
							Thread.sleep((long)(Math.random()*1000));
							System.out.println(Thread.currentThread().getName() + "准备放数据!");							
							queue.put(1);
							System.out.println(Thread.currentThread().getName() + "已经放了数据，" + 							
										"队列目前有" + queue.size() + "个数据");
						} catch (InterruptedException e) {
							e.printStackTrace();
						}

					}
				}
				
			}.start();
		}
		
		new Thread(){
			public void run(){
				while(true){
					try {
						//将此处的睡眠时间分别改为100和1000，观察运行结果
						Thread.sleep(1000);
						System.out.println(Thread.currentThread().getName() + "准备取数据!");
						queue.take();
						System.out.println(Thread.currentThread().getName() + "已经取走数据，" + 							
								"队列目前有" + queue.size() + "个数据");					
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}
			
		}.start();			
	}
}

package cn.itcast.hemai2;

import java.util.Collections;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.atomic.AtomicInteger;
/**
 * 阻塞队列ArrayBlockingQueue的一个应用：
 * 用两个具有1个空间的队列来实现同步通知的功能。
 * @author admin
 *
 */
public class BlockingQueueCommunication {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
		final Business business = new Business();
		new Thread(
				new Runnable() {
					
					@Override
					public void run() {
					
						for(int i=1;i<=50;i++){
							business.sub(i);
						}
						
					}
				}
		).start();
		
		for(int i=1;i<=50;i++){
			business.main(i);
		}
		
	}

	 static class Business {
		 
		 
		  BlockingQueue<Integer> queue1 = new ArrayBlockingQueue<Integer>(1);
		  BlockingQueue<Integer> queue2 = new ArrayBlockingQueue<Integer>(1);
		  
		  {
			  Collections.synchronizedMap(null);
			  try {
				  System.out.println("xxxxxdfsdsafdsa");
				queue2.put(1);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		  }
		  
		  public  void sub(int i){
			  	try {
					queue1.put(1);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				for(int j=1;j<=10;j++){
					System.out.println("sub thread sequece of " + j + ",loop of " + i);
				}
				try {
					queue2.take();
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
		  }
		  
		  public  void main(int i){
			  	try {
					queue2.put(1);
				} catch (InterruptedException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
				for(int j=1;j<=100;j++){
					System.out.println("main thread sequece of " + j + ",loop of " + i);
				}
				try {
					queue1.take();
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
		  }
	  }

}