How to use Lock and Condition to realize producers and consumers

Today, I will talk to you about how to use Lock and Condition to achieve producers and consumers. Many people may not know much about it. In order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article.

Comparing the two methods, the Condition approach can specify more precisely which threads are awakened.

Public class MyContainer2 {final private LinkedList lists = new LinkedList (); final private int MAX = 10; / up to 10 elements private int count = 0; private Lock lock = new ReentrantLock (); / / producer condition private Condition producer = lock.newCondition (); / / Consumer condition private Condition consumer = lock.newCondition () Public void put (T t) {try {lock.lock (); while (lists.size () = = MAX) {/ / think about why use while instead of if? Producer.await ();} lists.add (t); + + count; consumer.signalAll (); / / notify the consumer thread to consume} catch (InterruptedException e) {e.printStackTrace () } finally {lock.unlock ();}} public T get () {T t = null; try {lock.lock () While (lists.size () = = 0) {consumer.await ();} t = lists.removeFirst (); count--; producer.signalAll () / / notify the producer to produce} catch (InterruptedException e) {e.printStackTrace ();} finally {lock.unlock ();} return t } public static void main (String [] args) {MyContainer2 c = new MyContainer2 (); / / start the consumer thread for (int item0; I {for (int jobs0; j)