线程生产消费模式

package com.phone.week5.day3;

/*
*练习，有一个篮子，里面可以装馒头，一共可以装6个馒头，
*有一群新东方出来的大师父往里面扔馒头
*有一群千锋出来的IT人员从篮子里拿馒头吃
*1.找出共享的资源
*2.创建生产者
*3.创建消费者
*4.测试
*分析类，属性，方法
*会有一个篮子类，篮子里可以装6个馒头，所以会有一个数组，可以给每个馒头加个标号
*
*/
public class TestManTou {
public static void main(String[] args) {
Basket bas = new Basket();
new Teacher(bas).start();
new Student(bas).start();
}
}

// 生产者
class Teacher extends Thread {
private Basket basket;

public Teacher(Basket basket) {    super();    this.basket = basket;}@Overridepublic void run() {    for (int i = 1; i <= 20; i++) {        try {            Thread.sleep((int) (Math.random() * 3000));        } catch (InterruptedException e) {            e.printStackTrace();        }        Bread b = new Bread(i);        basket.proBread(b); // 生产馒头    }}

}

// 消费者
class Student extends Thread {
private Basket basket;

public Student(Basket basket) {    super();    this.basket = basket;}public void run() {    for (int i = 1; i <= 20; i++) {        try {            Thread.sleep((int) (Math.random() * 3000));        } catch (InterruptedException e) {            e.printStackTrace();        }        Bread b = basket.getBread(); // 消费馒头    }}

}

// 篮子类
class Basket {
Bread[] br = new Bread[6]; // 可以装6个馒头
int index = 0; // 可以通过索引拿馒头

// 拿馒头的方法,一次只能有一个人拿public synchronized Bread getBread() {    index--;    if (index <0) {        System.out.println("馒头没有了，请大师父做馒头");        try {            this.notify(); // 叫醒某一个线程            this.wait(); // 自己等        } catch (InterruptedException e) {            e.printStackTrace();        }    }    //System.out.println(Thread.currentThread().getName() + "拿了一个馒头");    System.out.println("拿馒头的索引是:" + index);    return br[index]; // 拿到馒头}// 生产馒头，一次只能放一个public synchronized void proBread(Bread bre) {    if (index == br.length - 1) {        System.out.println("馒头满了，请学生吃馒头");        this.notify(); //叫醒        try {            this.wait(); //等待        } catch (InterruptedException e) {            e.printStackTrace();        }    }    index++;    //System.out.println("生产了馒头:" + bre.getId());    System.out.println("生产馒头的索引是:" + index);    br[index] = bre;}

}

// 馒头类
class Bread {
private int id;

public int getId() {    return id;}public void setId(int id) {    this.id = id;}public Bread(int id) {    super();    this.id = id;}

}

package com.phone.week5.day3;

public class TestComm implements Runnable{

public static void main(String[] args) {    TestComm tc = new TestComm();    new Thread(tc,"a").start();    new Thread(tc,"b").start();}Object ob = new Object();@Overridepublic synchronized  void run() {    synchronized (ob) {        for (int i = 0; i <5; i++) {            if(i==2){                try {                    wait();                } catch (InterruptedException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }        }    }    for (int i = 0; i <10; i++) {        System.out.println(Thread.currentThread().getName()+"  "+i);        if(i==4){            try {                this.wait();//进行等待的状态            } catch (InterruptedException e) {                e.printStackTrace();            }         }        if(i==1){            this.notify(); //叫醒正在等待的线程        }        if(i==6){            this.notify();        }    }}

}