生产者消费者模式的问题
1.线程通信方法
2.线程通信问题解决方式
public class Demo33_ThreadPC {
public static void main(String[] args) {
SynContainer synContainer = new SynContainer();
new Producer(synContainer).start();
new Consumer(synContainer).start();
}
}
//生产者
class Producer extends Thread {
//容缓冲区
SynContainer container;
public Producer(SynContainer container) {
this.container = container;
}
//生产
@Override
public void run() {
for (int i = 0; i < 100; i++) {
container.push(new Product(i));
System.out.println("生产了" + i + "件产品");
}
}
}
//消费者
class Consumer extends Thread {
//容缓冲区
SynContainer container;
public Consumer(SynContainer container) {
this.container = container;
}
//消费
@Override
public void run() {
for (int i = 0; i < 100; i++) {
System.out.println("消费了-->" + container.pop().id + "件产品");
}
}
}
//产品
class Product {
int id;//产品编号
public Product(int id) {
this.id = id;
}
}
//缓冲区
class SynContainer {
//需要一个容器大小
Product[] products = new Product[10];
//容器计数器
int count = 0;
//生产者放入产品
public synchronized void push(Product product) {
//如果容器满了,需要等待消费者消费
while (count == products.length) {
//通知消费者消费,等待生产
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//如果没有满,需要丢入产品
products[count] = product;
count++;
//通知消费者消费
this.notifyAll();
}
//消费者消费产品
public synchronized Product pop() {
//判断是否能消费
while (count <= 0) {
//等待生产者生产
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//如果可以消费
count--;
Product product = products[count];
//吃完了 通知生产者生产
this.notifyAll();
return product;
}
}
public class Demo33_ThreadPC {
public static void main(String[] args) {
SynContainer synContainer = new SynContainer();
new Producer(synContainer).start();
new Consumer(synContainer).start();
}
}
//生产者
class Producer extends Thread {
//容缓冲区
SynContainer container;
public Producer(SynContainer container) {
this.container = container;
}
//生产
@Override
public void run() {
for (int i = 0; i < 100; i++) {
container.push(new Product(i));
System.out.println("生产了" + i + "件产品");
}
}
}
//消费者
class Consumer extends Thread {
//容缓冲区
SynContainer container;
public Consumer(SynContainer container) {
this.container = container;
}
//消费
@Override
public void run() {
for (int i = 0; i < 100; i++) {
System.out.println("消费了-->" + container.pop().id + "件产品");
}
}
}
//产品
class Product {
int id;//产品编号
public Product(int id) {
this.id = id;
}
}
//缓冲区
class SynContainer {
//需要一个容器大小
Product[] products = new Product[10];
//容器计数器
int count = 0;
//生产者放入产品
public synchronized void push(Product product) {
//如果容器满了,需要等待消费者消费
while (count == products.length) {
//通知消费者消费,等待生产
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//如果没有满,需要丢入产品
products[count] = product;
count++;
//通知消费者消费
this.notifyAll();
}
//消费者消费产品
public synchronized Product pop() {
//判断是否能消费
while (count <= 0) {
//等待生产者生产
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//如果可以消费
count--;
Product product = products[count];
//吃完了 通知生产者生产
this.notifyAll();
return product;
}
}
六、线程池
//测试线程池
public class Demo35_ThreadPool {
public static void main(String[] args) {
// 1. 创建服务,擦行间线程池
// newFixedThreadPool(线程池大小)
ExecutorService service = Executors.newFixedThreadPool(10);
//执行
service.execute(new MyThread());
service.execute(new MyThread());
service.execute(new MyThread());
service.execute(new MyThread());
service.execute(new MyThread());
service.execute(new MyThread());
//关闭连接
service.shutdown();
}
}
class MyThread implements Runnable {
@Override
public void run() {
System.out.println(Thread.currentThread().getName());
}
}



