Created
August 22, 2017 14:12
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| package thread; | |
| import java.util.ArrayList; | |
| import java.util.List; | |
| class Producer extends Thread { | |
| private final List<Integer> list; | |
| Producer(List<Integer> list) { | |
| this.list = list; | |
| } | |
| @Override | |
| public void run() { | |
| for (int i = 0; i < 100; i++) { | |
| Integer num = (int) (Math.random() * 1000); | |
| synchronized (list) { | |
| System.out.println("Added:" + num); | |
| list.add(num); | |
| list.notify(); | |
| } | |
| try { | |
| Thread.sleep((long) (Math.random() * 1000)); | |
| } catch (InterruptedException e) { /**/ | |
| } | |
| } | |
| } | |
| } | |
| class Consumer extends Thread { | |
| private final List<Integer> list; | |
| public Consumer(List<Integer> list) { | |
| this.list = list; | |
| } | |
| @Override | |
| public void run() { | |
| for (int i = 0; i < 100; i++) { | |
| synchronized (list) { | |
| while (list.size() == 0) { | |
| try { | |
| list.wait(); | |
| } catch (InterruptedException e) { /**/ | |
| } | |
| Integer fetch = list.remove(0); | |
| System.err.println("Fetched:" + fetch); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| public class ProducerConsumer { | |
| public static void main(String[] args) throws InterruptedException { | |
| List<Integer> list = new ArrayList<>(); | |
| Thread[] threads = { | |
| new Producer(list), new Producer(list), | |
| new Consumer(list), new Consumer(list) | |
| }; | |
| for (Thread thread : threads) { | |
| thread.start(); | |
| } | |
| for (Thread thread : threads) { | |
| thread.join(); | |
| } | |
| System.out.println("Finished: " + list.size()); | |
| } | |
| } |
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