Producer-Consumer with BlockingQueue - Java Thread

Java examples for Thread:BlockingQueue

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Description

Producer-Consumer with BlockingQueue

Demo Code

import java.util.concurrent.BlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.Random;
import java.util.concurrent.BlockingQueue;

class Consumer implements Runnable {
    private BlockingQueue<String> drop;

    public Consumer(BlockingQueue<String> drop) {
        this.drop = drop;
    }//from   w  w  w. ja v  a  2s. com

    public void run() {
        Random random = new Random();
        try {
            for (String message = drop.take(); !message.equals("DONE"); message = drop
                    .take()) {
                System.out.format("MESSAGE RECEIVED: %s%n", message);
                Thread.sleep(random.nextInt(5000));
            }
        } catch (InterruptedException e) {
        }
    }
}
class Producer implements Runnable {
    private BlockingQueue<String> drop;

    public Producer(BlockingQueue<String> drop) {
        this.drop = drop;
    }

    public void run() {
        String importantInfo[] = { "Mares eat oats", "Does eat oats",
                "Little lambs eat ivy", "A kid will eat ivy too" };
        Random random = new Random();

        try {
            for (int i = 0; i < importantInfo.length; i++) {
                drop.put(importantInfo[i]);
                Thread.sleep(random.nextInt(5000));
            }
            drop.put("DONE");
        } catch (InterruptedException e) {
        }
    }
}
public class ProducerConsumerExample {
    public static void main(String[] args) {
        BlockingQueue<String> drop = new SynchronousQueue<String>();
        (new Thread(new Producer(drop))).start();
        (new Thread(new Consumer(drop))).start();
    }
}

/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

Result


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