producerconsumer.java

来自「java写的另一个生产者消费者问题 java写的另一个生产者消费者问题」· Java 代码 · 共 94 行

public class ProducerConsumer {
	public static void main(String[] args) {
		SyncStack ss = new SyncStack();
		Producer p = new Producer(ss);
		Consumer c = new Consumer(ss);

		new Thread(p).start();
		new Thread(c).start();
	}
}

class Product {
	int id;
	
	Product(int id) {
		this.id = id;
	}
	
	public String toString() {
		return "Product-" + id;
	}
}

class SyncStack {
	int buffer = 0;
	Product[] arrProducts = new Product[5];

	public synchronized void push(Product wt) {
		while (buffer == arrProducts.length) {
			try {
				this.wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		this.notifyAll();
		arrProducts[buffer] = wt;
		buffer++;
	}

	public synchronized Product pop() {
		while (buffer == 0) {
			try {
				this.wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		this.notifyAll();
		buffer--;
		return arrProducts[buffer];
	}
}

class Producer implements Runnable {
	SyncStack ss = null;

	Producer(SyncStack ss) {
		this.ss = ss;
	}

	public void run() {
		for (int i = 0; i < 10; i++) {
			Product wt = new Product(i);
			System.out.println("生产了：" + wt);
			ss.push(wt);
			try {
				Thread.sleep((int) (Math.random() * 200));
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}

class Consumer implements Runnable {
	SyncStack ss = null;

	Consumer(SyncStack ss) {
		this.ss = ss;
	}

	public void run() {
		for (int i = 0; i < 10; i++) {
			Product wt = ss.pop();
			System.out.println("消费了: " + wt);
			try {
				Thread.sleep((int) (Math.random() * 1000));
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}