多线程作业
有一个厨师负责生产馒头，放在一个容量为10的篮子里，有3个学生负责吃馒头。
当篮子已经装满的时候厨师要暂停生产，当篮子为空的时候学生暂停吃馒头，
要求:使用多线程模拟该过程。（需要线程同步）
1.Consumer类
class Consumer implements Runnable {
SyncStack ss = null;
Consumer(SyncStack ss) {
this.ss = ss;
}
public void run() {
for(int i=0; i<20; i++) {
MaTou wt = ss.pop();
//System.out.println(Thread.currentThread().getName()+"消费了: " + wt);
try {
//Thread.sleep((int)(Math.random() * 1000));
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
2.Producer类
class Producer implements Runnable {
SyncStack ss = null;
Producer(SyncStack ss) {
this.ss = ss;
}
public void run() {
for(int i=0; i<60; i++) {
MaTou wt = new MaTou(i);
ss.push(wt);
//System.out.println("厨师生产了：" + wt);
try {
//Thread.sleep((int)(Math.random() * 200));
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
3.MaTou类
public class MaTou {
int id;
MaTou(int id) {
this.id = id;
}
public String toString() {
return id+"号馒头: ";
}
}
4.SyncStack类
class SyncStack {
int index = 0;
MaTou[] arrWT = new MaTou[10];
public synchronized void push(MaTou wt) {
String s = Thread.currentThread().getName();
while(index == arrWT.length) {
try {
System.out.println("篮子已满，暂停生产");
this.wait();
System.out.println(s+"继续生产");
} catch (InterruptedException e) {
e.printStackTrace();
}
}
arrWT[index] = wt;
index ++;
System.out.println("厨师生产了：" + wt);
this.notifyAll();
}
public synchronized MaTou pop() {
String s = Thread.currentThread().getName();
while(index == 0) {
try {
System.out.println("篮子已空，暂停消费");
this.wait();
System.out.println(s+"继续消费");
} catch (InterruptedException e) {
e.printStackTrace();
}
}
index--;
System.out.println(s+"消费了: " +arrWT[index]);
this.notifyAll();
return arrWT[index];
}
}
5.ProducerConsumer类
public class ProducerConsumer {
public static void main(String[] args) {
SyncStack ss = new SyncStack();
Producer p = new Producer(ss);
Consumer c = new Consumer(ss);
Thread zhang=new Thread(c);
zhang.setName("张飞");
Thread wang=new Thread(c);
wang.setName("王朔");
Thread li=new Thread(c);
li.setName("李刚");
Thread chushi=new Thread(p);
chushi.setName("李大厨师");
chushi.start();
while(!chushi.isAlive()){
}
zhang.start();
wang.start();
li.start();
}
}
写在最后
这个有点令人头疼的作业，写到吐了，特此粘出来“参考答案”，供各位研究和学习。