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package com.packtpub.java7.concurrency.chapter2.recipe2.core;import com.packtpub.java7.concurrency.chapter2.recipe2.task.Consumer;import com.packtpub.java7.concurrency.chapter2.recipe2.task.EventStorage;import com.packtpub.java7.concurrency.chapter2.recipe2.task.Producer;/** * Main class of the example */public class Main {    /**     * Main method of the example     */    public static void main(String[] args) {        // Creates an event storage        EventStorage storage=new EventStorage();        // Creates a Producer and a Thread to run it        Producer producer=new Producer(storage);        Thread thread1=new Thread(producer);        // Creates a Consumer and a Thread to run it        Consumer consumer=new Consumer(storage);        Thread thread2=new Thread(consumer);        // Starts the thread        thread2.start();        thread1.start();    }}

package com.packtpub.java7.concurrency.chapter2.recipe2.task;import java.util.Date;import java.util.LinkedList;import java.util.List;/** * This class implements an Event storage. Producers will storage * events in it and Consumers will process them. An event will * be a java.util.Date object * */public class EventStorage {    /**     * Maximum size of the storage     */    private int maxSize;    /**     * Storage of events     */    private List<Date> storage;    /**     * Constructor of the class. Initializes the attributes.     */    public EventStorage(){        maxSize=10;        storage=new LinkedList<>();    }    /**     * This method creates and storage an event.     */    public synchronized void set(){            while (storage.size()==maxSize){                try {                    wait();                } catch (InterruptedException e) {                    e.printStackTrace();                }            }            storage.add(new Date());            System.out.printf("Set: %d\n",storage.size());            notify();    }    /**     * This method delete the first event of the storage.     */    public synchronized void get(){            while (storage.size()==0){                try {                    wait();                } catch (InterruptedException e) {                    e.printStackTrace();                }            }            System.out.printf("Get: %d: %s",storage.size(),((LinkedList<?>)storage).poll());            notify();    }}

package com.packtpub.java7.concurrency.chapter2.recipe2.task;/** * This class implements a producer of events. * */public class Producer implements Runnable {    /**     * Store to work with     */    private EventStorage storage;    /**     * Constructor of the class. Initialize the storage.     * @param storage The store to work with     */    public Producer(EventStorage storage){        this.storage=storage;    }    /**     * Core method of the producer. Generates 100 events.     */    @Override    public void run() {        for (int i=0; i<100; i++){            storage.set();        }    }}

package com.packtpub.java7.concurrency.chapter2.recipe2.task;/** * This class implements a consumer of events. * */public class Consumer implements Runnable {    /**     * Store to work with     */    private EventStorage storage;    /**     * Constructor of the class. Initialize the storage     * @param storage The store to work with     */    public Consumer(EventStorage storage){        this.storage=storage;    }    /**     * Core method for the consumer. Consume 100 events     */    @Override    public void run() {        for (int i=0; i<100; i++){            storage.get();        }    }}

结果：

Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:51 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016Set: 1
Set: 2
Set: 3
Set: 4
Set: 5
Set: 6
Set: 7
Set: 8
Set: 9
Set: 10
Get: 10: Tue Jul 12 16:05:52 CST 2016Get: 9: Tue Jul 12 16:05:52 CST 2016Get: 8: Tue Jul 12 16:05:52 CST 2016Get: 7: Tue Jul 12 16:05:52 CST 2016Get: 6: Tue Jul 12 16:05:52 CST 2016Get: 5: Tue Jul 12 16:05:52 CST 2016Get: 4: Tue Jul 12 16:05:52 CST 2016Get: 3: Tue Jul 12 16:05:52 CST 2016Get: 2: Tue Jul 12 16:05:52 CST 2016Get: 1: Tue Jul 12 16:05:52 CST 2016

以上代码来源于Java7并发实践手册