生产电脑

题目：设计一个生产电脑和搬运电脑类，要求生产出一台电脑就搬走一台电脑，如果没有新的电脑生产出来，则搬运工要等待新电脑产出，如果生产出的电脑没有搬走，则要等待电脑搬走之后再生产，并统计出生产的电脑数量。

public class ComputerTest {
    public static void main(String[] args) {
        Resource resource = new Resource();
        ProducerComThread pro = new ProducerComThread(resource);
        ConsumerComThread con = new ConsumerComThread(resource);
        new Thread(pro, "生产者线程").start();
        new Thread(con, "消费者线程").start();
    }
}

class ConsumerComThread implements Runnable {

    private Resource resource;

    public ConsumerComThread(Resource resource) {
        this.resource = resource;
    }

    @Override
    public void run() {
        for (int i = 0; i < 50; i++) {
            try {
                resource.consumer();
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}

class ProducerComThread implements Runnable {

    private Resource resource;

    public ProducerComThread(Resource resource) {
        this.resource = resource;
    }

    @Override
    public void run() {
        for (int i = 0; i < 50; i++) {
            try {
                if (i % 2 == 0) {
                    resource.producer("联想");
                } else
                    resource.producer("华为");
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}

class Resource {
    private Computer computer;

    public synchronized void producer(String name) throws InterruptedException {
        while (computer != null)
            super.wait();
        Thread.sleep(200);
        this.computer = new Computer(name);
        System.out.println("[" + Thread.currentThread().getName() + "] - " + computer.getName());
        super.notifyAll();
    }

    public synchronized String consumer() throws InterruptedException {
        while (computer == null)
            super.wait();
        Thread.sleep(200);
        System.out.println("[" + Thread.currentThread().getName() + "] - " + computer.getName());
        System.out.println(this.computer);
        try {
            return computer.getName();
        } finally {
            computer = null;
            super.notifyAll();
        }
    }

    public Computer getComputer() {
        return computer;
    }
}

class Computer {
    private String name;

    private static int count = 0;

    public Computer (String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    @Override
    public String toString() {
        return "【这是第"+ ++count + "台电脑】"+" - 电脑型号是："+this.name;
    }
}

这里思路是定义一个电脑类，再定义一个线程管理类，用线程管理电脑，再构建消费者与生产者。