package com.wjxie.wait.notify;
public class Producer extends Thread {
public Producer(String name) {
super(name);
}
@Override
public void run() {
while (true) {
synchronized (Main.queue) {
try {
Thread.sleep(100);
} catch (InterruptedException e1) {
e1.printStackTrace();
}
if (Main.queue.size() == Main.MAX_SIZE) {
try {
Main.queue.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
} else {
Item item = new Item();
Main.queue.offer(item);
// 生产一次之后，立马释放锁。一方面让消费者消费，另一方面让其他生产者生产。
Main.queue.notify();
System.out.println(this.getName() + " produce " + item);
}
}
}
}
}
package com.wjxie.wait.notify;
public class Consumer extends Thread {
public Consumer(String name) {
super(name);
}
@Override
public void run() {
while (true) {
synchronized (Main.queue) {
try {
Thread.sleep(200);
} catch (InterruptedException e1) {
e1.printStackTrace();
}
if (Main.queue.size() == 0) {
try {
Main.queue.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
} else {
Item item = Main.queue.poll();
// 消费一次之后，立马释放锁。一方面让生产者生产，另一方面让其他消费者消费。
Main.queue.notify();
System.out.println(this.getName() + " consume " + item);
}
}
}
}
}
package com.wjxie.wait.notify;
import java.util.LinkedList;
import java.util.Queue;
public class Main {
// 最大容量
public static final int MAX_SIZE = 100;
// 容器，兼作排它锁
public static Queue<Item> queue = new LinkedList<Item>();
public static void main(String[] args) {
Thread p = new Producer("[P]");
Thread p2 = new Producer("[P2]");
Thread c = new Consumer("[C]");
Thread c2 = new Consumer("[C2]");
p.start();
p2.start();
c.start();
c2.start();
}
}
package com.wjxie.wait.notify;
public class Item {
private int id;
public Item() {
id = ID.getID();
}
@Override
public String toString() {
return "Item[" + id + "]";
}
static class ID {
private static int id = 0;
public static int getID() {
return ++id;
}
}
}